991 Carrera/Carrera 4

AP Racing Radi-Cal 390mm Competition Brake Kit for Porsche (Front) Fit The Following Cars Porsche 991 Carrera S/4S/GTS (PCCB and Iron Rotors) Porsche 992 Carrera base and Carrera 4 (Iron Rotors) Complete front AP Racing Radi-Cal Competition Brake Kit for Porsche 991 911 S/4S/GTS and 992 Carrera base and Carrera 4. Features AP Racing Radi-Cal 9669 calipers with option for 25mm (1 inch) thick pads for extreme durability! Jewel-like ENP Caliper finish is incredibly durable and easy to clean 390x36mm iron discs are resilient under heavy track use, and replacements cost one tenth of PCCB ($600 vs. $6,000 per disc) Shaves over 20 lbs. off the front axle vs oem iron brakes Only adds approximately one pound per side of unsprung weight vs. the OEM PCCB setup Fits inside 19" wheels, which the OEM PCCB discs cannot do, allowing for additional unsprung weight reduction plus improved tire options Our AP Racing Radi-Cals feature a removable bridge, making pad swaps far faster and easier than stock calipers Commonly available AP Racing pad shapes provide a wide selection of brake pad choices to tailor system feel and performance Removing the stock calipers and PCCB discs allows them to be preserved undamaged, retaining the vehicle's future resale value AP systems typically trade hands on the used market at 65% or more of their original MSRP, lowering the long-term cost of ownership. Use them for a few years and recoup a large portion of your initial investment. Designed to work with our matching 365mm Radi-Cal brake kit.

AP Racing Radi-Cal 372mm Competition Brake Kit for Porsche (Front) Fit The Following Cars Porsche 991 Carrera S/4S/GTS (PCCB and Iron Rotors) Porsche 992 Carrera base / Carrera 4 (Iron Rotors) Complete front AP Racing Radi-Cal Competition Brake Kit for Porsche features; Features AP Racing Radi-Cal 9669 calipers with option for 25mm (1 inch) thick pads for extreme durability! Jewel-like ENP Caliper finish is incredibly durable and easy to clean 372x34mm iron discs are resilient under heavy track use, and replacements cost one tenth of PCCB ($600 vs. $6,000 per disc) Shaves over 20 lbs. off the front axle vs oem iron brakes Only adds approximately one pound per side of unsprung weight vs. the OEM PCCB setup Fits inside 19" wheels, which the OEM PCCB discs cannot do, allowing for additional unsprung weight reduction plus improved tire options Our AP Racing Radi-Cals feature a removable bridge, making pad swaps far faster and easier than stock calipers Commonly available AP Racing pad shapes provide a wide selection of brake pad choices to tailor system feel and performance Removing the stock calipers and PCCB discs allows them to be preserved undamaged, retaining the vehicle's future resale value AP systems typically trade hands on the used market at 65% or more of their original MSRP, lowering the long-term cost of ownership. Use them for a few years and recoup a large portion of your initial investment. Designed to work with our matching 365mm Radi-Cal brake kit.

AP Racing Radi-Cal 365mm Competition Brake Kit for Porsche (Rear) Fit The Following Cars Porsche 991 Carrera S/4S/GTS (PCCB and Iron Rotors) Complete front AP Racing Radi-Cal Competition Brake Kit for Porsche 991 911 S/4S/GTS features; Features AP Racing Radi-Cal 9449 calipers  Jewel-like ENP Caliper finish is incredibly durable and easy to clean 365x30mm iron discs are resilient under heavy track use, and replacements cost one tenth of PCCB ($600 vs. $6,000 per disc) Shaves up to  9lbs. off the rear axle vs oem iron brakes Only adds approximately one pound per side of unsprung weight vs. the OEM PCCB setup Fits inside 19" wheels, which the OEM PCCB discs cannot do, allowing for additional unsprung weight reduction plus improved tire options Our AP Racing Radi-Cals feature a removable bridge, making pad swaps far faster and easier than stock calipers Commonly available AP Racing pad shapes provide a wide selection of brake pad choices to tailor system feel and performance Removing the stock calipers and PCCB discs allows them to be preserved undamaged, retaining the vehicle's future resale value AP systems typically trade hands on the used market at 65% or more of their original MSRP, lowering the long-term cost of ownership. Use them for a few years and recoup a large portion of your initial investment. Designed to work with our matching Front Radi-Cal brake kit.

AP Racing J Hook 365x30mm Replacement Brake Rotor Rings This kit is two replacement rotor discs and associated installation hardware only. Center hat is not included. Replacement discs for AP Racing 13.01.20097. Fits The Following Cars: Porsche 991 911 Carrera Porsche 991 911 S/4S/GTS Porsche 992 911 Carrera Sold/priced per pair of rotor rings (including hardware). 365x30mm (14.37" x 1.18") 72-vane, D66, J Hook Iron Racing Brake Disc Replacements AP Racing J Hook Brake Rotors – The Gold Standard in Track Day & Racing Performance Engineered for professional motorsport, HPDE, and dedicated track day use, AP Racing’s J Hook Brake Rotors deliver uncompromising performance, thermal stability, and consistent braking power. These two-piece, floating rotors are built to handle the extreme demands of road racing, with design features derived from over 50 years of elite competition—including Formula 1, NASCAR, and IMSA. Unlike conventional one-piece rotors, AP Racing’s two-piece floating design features a billet aluminum hat mated to a cast iron disc via precision-engineered bobbins. This setup allows for controlled radial expansion under high heat, minimizing distortion and coning. The result? More even pad wear, a firmer pedal feel, and longer component life, even during extended lapping sessions or endurance racing. Floating hardware includes anti-knockback spring clips that reduce piston retraction while eliminating common NVH issues like rattling. Why Choose AP Racing J Hook Rotors? Advanced Cooling, Superior Bite, Unmatched Durability At the heart of every rotor is AP Racing’s proprietary high-carbon iron alloy, developed to withstand repeated thermal cycling without cracking or warping. Internally, directional vanes—far superior to OEM pillar or straight vane designs—maximize airflow and cooling. With 60 to 84 vanes per rotor, AP Racing achieves faster heat evacuation, reduced brake fade, and a more consistent friction surface. These rotors are left/right-specific for optimal airflow and balance. The exclusive J Hook slot pattern offers enhanced initial bite and promotes uniform heat distribution across the rotor face, reducing pad deposits and vibration. Unlike drilled rotors or straight-slot competitors, the J Hook design provides cleaner pad transfer during bed-in and superior modulation under braking—ideal for serious drivers who demand feedback and control. Yes, you might hear a little more whirr, but you’ll gain the stopping power, consistency, and longevity your lap times demand. Premium Components, Affordable Performance The rotor hats are CNC-machined from 6061-T6 billet aluminum and hard anodized for strength and heat resistance. Scalloped edges under the hat further assist heat dissipation. All hardware is U.S.-made to AP Racing spec, the same quality found on pro-level racing platforms. And while these rotors are race-proven, they’re also surprisingly cost-effective to replace. Don’t settle for cheap rotors that crack after a weekend—AP’s J Hook rings offer better durability and real long-term value. Fewer replacements mean more track time, less downtime, and peace of mind knowing you're running the best. Used by Champions. Trusted by Experts. From endurance racers to HPDE enthusiasts, AP Racing brake rotors are trusted worldwide for their reliability, longevity, and performance under pressure. Whether you're shaving seconds off your lap time or building a dedicated track car, the J Hook delivers a professional-grade solution that won’t let you down. AP Racing J Hook Brake Rotors for Auto Racing, Track Days & HPDE Why Rotor Design Matters: Heat Expansion and Floating Technology As with most metals, iron brake discs expand significantly under heat. When temperatures rise, the disc grows radially—expanding in both diameter and circumference. Traditional one-piece rotors struggle to accommodate this natural expansion. As the outer edge pulls away from the center under heat stress, it creates a condition called “coning”—a distortion that compromises pad-to-rotor contact. This distortion can lead to uneven pad wear, brake tapering, and an inconsistent, long brake pedal. AP Racing two-piece floating brake rotors are purpose-built to eliminate these issues. Engineered with “float” built into the disc or hat assembly, these rotors feature oblong-shaped mounting holes that allow the hardware to slide as the disc heats up. This flexibility ensures the disc runs true within the caliper under high-temperature loads, effectively reducing distortion, minimizing pad taper and stress cracks, and promoting longer component life. Custom Mounting Hardware & Anti-Knockback Spring Clips AP Racing rotors utilize application-specific, U.S.-made mounting hardware—not generic bolts. These premium components are the exact parts used in AP’s professional motorsport products, engineered to withstand the rigors of competitive racing. To manage lateral disc motion that can push caliper pistons backward (known as knockback), AP Racing integrates anti-knockback spring clips on alternating bobbins—five on a ten-bolt setup, six on a twelve-bolt disc. These clips keep the aluminum hat and iron disc ring properly aligned while still allowing for radial float. Bonus: they eliminate annoying rattles and vibrations, ensuring a quieter, more refined braking experience. High-Performance Hat Design for Heat Isolation The disc hats in AP Racing’s two-piece floating rotors are CNC-machined from 6061-T6 billet aluminum and finished with a hard anodized coating. This high-strength aluminum alloy was selected for its ability to maintain structural integrity even at elevated temperatures. AP adds scalloped channels beneath the hat to further encourage airflow and heat evacuation from the outer disc face, minimizing thermal transfer to hubs and wheel bearings—helping reduce maintenance costs on these expensive components. Internal Vane Engineering: Airflow Optimization & Thermal Stability AP Racing’s internal vane design sets them apart from OEM and most aftermarket competitors. While many factory brake discs use non-directional pillar vanes (low-cost and NVH-focused), AP Racing rotors use directional vanes engineered for maximum airflow. These rotors are side-specific—meaning you’ll receive a unique left and right disc in each set—ensuring optimized cooling through strategic vane orientation and shape. Beyond that, AP Racing rotors feature a superior vane count, typically ranging from 60 to 84 vanes, compared to 30–48 in most aftermarket rotors. After extensive CFD and thermal analysis, this high vane count was proven to: Increase airspeed and thermal transfer Reduce recirculation and deflection at the disc face Minimize coning, cracking, and brake fade Deliver more even pad contact and extended rotor life J Hook Slot Pattern: Exclusive to AP Racing Slots and drill holes may improve initial bite, but they also introduce “cool spots” in the rotor face—areas of uneven heating that can lead to stress risers, cracks, and pad vibration. OEM rotors often avoid this by leaving the disc face blank, but that compromises bite and brake feel. AP Racing’s patented J Hook design, developed through rigorous R&D, solves this problem. The hooks are meticulously spaced around the disc’s circumference and from hat to edge, forming a continuous distortion path that ensures even heat distribution. This encourages uniform pad deposits during bed-in, helps reduce judder and cracking, and improves consistency under repeated high-load braking. In addition, the J Hook slots provide more leading edges for pads to grip than traditional curved slots or blank rotors. While this might generate a mild whirring sound during braking, the benefits—more bite, cleaner bedding, better pedal feel—make it the top choice for committed racers and serious track day drivers. Metallurgy Backed by 50+ Years of Motorsport Leadership AP Racing's reputation is built on performance, and their proprietary iron alloy used in J Hook rotors is no exception. Drawing from over five decades of elite motorsport experience, including 750+ Formula 1 wins and widespread use across NASCAR, AP’s engineers have developed a disc alloy that excels under sustained racing temperatures and stress. Where OEM discs focus on affordability and mass production, AP Racing’s J Hook rotors are purpose-built for motorsport durability and heat resistance. Affordable Replacement Cost: Serious Value for Serious Drivers Even the best brake rotors are consumables. When you drive hard—especially at the track—your discs will eventually wear out. That’s why AP Racing designed their replacement iron rings to be cost-effective, allowing you to replace worn parts without breaking the bank. Compare that to constantly buying cheap $150 rotors every weekend—rotors that can't handle the heat and need to be swapped frequently. With AP Racing’s J Hook rotors, you get longer service intervals, less downtime, and better performance over time, making them an incredibly smart long-term investment. Proven on Track. Trusted by Champions. Top-tier racing teams rely on AP Racing J Hook rotors for one reason: they perform under pressure. Whether you're running time trials, attending HPDE events, or competing in wheel-to-wheel racing, these rotors offer professional-grade reliability, safety, and performance. Bedding and Preparation of AP Racing J Hook Discs Properly preparing your new brake discs before heavy use is extremely important. The goal of bedding-in your brake pads and discs is to mate them together properly and prepare them for heavy use.  When prepared properly, or bed-in, your pads will transfer a thin layer of material to the disc face (transfer layer).  The pads in your caliper will then actually ride on that thin layer of pad material you’ve put down on the rotor, rather than rubbing directly on the iron rotor face.  A good transfer layer is going to give you superior brake pedal feel, less noise, superior pad wear, and lower the chances of cracking your discs. Important Notes- PLEASE READ! First, make sure you are on a closed course to perform a proper bed-in.  Do NOT perform the procedure on public roads.  You need a stretch of asphalt with long straights, good visibility, and no potential obstructions.  Make sure you are in a position to safely and repeatedly attain the necessary speeds to perform the bed-in procedure.  A controlled racetrack is the best place to perform this procedure.  AP Racing and Competition Motorsport in no way suggest or condone speeding on public roads or breaking the law in your car, nor do we take responsibility for any damage or injury that occurs as a result of using our product or these procedures.  You are performing the bed-in procedure at your own risk.  During these procedures, it’s critical that you never come to a complete stop with your foot on the brake pedal.  If you have brake ducts on your car, you may want to block them off to allow your brake system to heat up easily. The procedure outlined below is a generic procedure for most types of mild race pad.  Please check your pad manufacturer’s recommended bed-in procedure. Accelerate to approximately 60mph and then decelerate down to 5 mph.  If your car has ABS, you should try to hold the brakes at a point just before ABS intervention.  Once the car slows to 5mph, immediately accelerate back up to about 60mph, and brake again to roughly 5mph.  Repeat this series of stopping and accelerating 8 to 10 times.  Again, do not come to a complete stop with your foot on the brake pedal. Cool the brake system down by cruising at 45mph+ for 5 to 10 minutes. Visually inspect your discs.  They should be a blue/grey color (instead of shiny silver), and have an even layer of pad material across and around the entire rotor face. If the AP Racing rotors don’t have a layer of pad material on them, perform another series of stops in the manner outlined above.

AP Racing J Hook 372x34mm Replacement Brake Rotor Rings This kit is two replacement rotor discs and associated installation hardware only. Center hat is not included. Replacement discs for AP Racing 13.01.20182. Fits The Following Cars: Porsche 991 911 Carrera Porsche 991 911 S/4S/GTS Porsche 992 911 Carrera Sold/priced per pair of rotor rings (including hardware). 372x34mm (14.65" x 1.34") 72-vane, D66, J Hook Iron Racing Brake Disc Replacements AP Racing J Hook Brake Rotors – The Gold Standard in Track Day & Racing Performance Engineered for professional motorsport, HPDE, and dedicated track day use, AP Racing’s J Hook Brake Rotors deliver uncompromising performance, thermal stability, and consistent braking power. These two-piece, floating rotors are built to handle the extreme demands of road racing, with design features derived from over 50 years of elite competition—including Formula 1, NASCAR, and IMSA. Unlike conventional one-piece rotors, AP Racing’s two-piece floating design features a billet aluminum hat mated to a cast iron disc via precision-engineered bobbins. This setup allows for controlled radial expansion under high heat, minimizing distortion and coning. The result? More even pad wear, a firmer pedal feel, and longer component life, even during extended lapping sessions or endurance racing. Floating hardware includes anti-knockback spring clips that reduce piston retraction while eliminating common NVH issues like rattling. Why Choose AP Racing J Hook Rotors? Advanced Cooling, Superior Bite, Unmatched Durability At the heart of every rotor is AP Racing’s proprietary high-carbon iron alloy, developed to withstand repeated thermal cycling without cracking or warping. Internally, directional vanes—far superior to OEM pillar or straight vane designs—maximize airflow and cooling. With 60 to 84 vanes per rotor, AP Racing achieves faster heat evacuation, reduced brake fade, and a more consistent friction surface. These rotors are left/right-specific for optimal airflow and balance. The exclusive J Hook slot pattern offers enhanced initial bite and promotes uniform heat distribution across the rotor face, reducing pad deposits and vibration. Unlike drilled rotors or straight-slot competitors, the J Hook design provides cleaner pad transfer during bed-in and superior modulation under braking—ideal for serious drivers who demand feedback and control. Yes, you might hear a little more whirr, but you’ll gain the stopping power, consistency, and longevity your lap times demand. Premium Components, Affordable Performance The rotor hats are CNC-machined from 6061-T6 billet aluminum and hard anodized for strength and heat resistance. Scalloped edges under the hat further assist heat dissipation. All hardware is U.S.-made to AP Racing spec, the same quality found on pro-level racing platforms. And while these rotors are race-proven, they’re also surprisingly cost-effective to replace. Don’t settle for cheap rotors that crack after a weekend—AP’s J Hook rings offer better durability and real long-term value. Fewer replacements mean more track time, less downtime, and peace of mind knowing you're running the best. Used by Champions. Trusted by Experts. From endurance racers to HPDE enthusiasts, AP Racing brake rotors are trusted worldwide for their reliability, longevity, and performance under pressure. Whether you're shaving seconds off your lap time or building a dedicated track car, the J Hook delivers a professional-grade solution that won’t let you down. AP Racing J Hook Brake Rotors for Auto Racing, Track Days & HPDE Why Rotor Design Matters: Heat Expansion and Floating Technology As with most metals, iron brake discs expand significantly under heat. When temperatures rise, the disc grows radially—expanding in both diameter and circumference. Traditional one-piece rotors struggle to accommodate this natural expansion. As the outer edge pulls away from the center under heat stress, it creates a condition called “coning”—a distortion that compromises pad-to-rotor contact. This distortion can lead to uneven pad wear, brake tapering, and an inconsistent, long brake pedal. AP Racing two-piece floating brake rotors are purpose-built to eliminate these issues. Engineered with “float” built into the disc or hat assembly, these rotors feature oblong-shaped mounting holes that allow the hardware to slide as the disc heats up. This flexibility ensures the disc runs true within the caliper under high-temperature loads, effectively reducing distortion, minimizing pad taper and stress cracks, and promoting longer component life. Custom Mounting Hardware & Anti-Knockback Spring Clips AP Racing rotors utilize application-specific, U.S.-made mounting hardware—not generic bolts. These premium components are the exact parts used in AP’s professional motorsport products, engineered to withstand the rigors of competitive racing. To manage lateral disc motion that can push caliper pistons backward (known as knockback), AP Racing integrates anti-knockback spring clips on alternating bobbins—five on a ten-bolt setup, six on a twelve-bolt disc. These clips keep the aluminum hat and iron disc ring properly aligned while still allowing for radial float. Bonus: they eliminate annoying rattles and vibrations, ensuring a quieter, more refined braking experience. High-Performance Hat Design for Heat Isolation The disc hats in AP Racing’s two-piece floating rotors are CNC-machined from 6061-T6 billet aluminum and finished with a hard anodized coating. This high-strength aluminum alloy was selected for its ability to maintain structural integrity even at elevated temperatures. AP adds scalloped channels beneath the hat to further encourage airflow and heat evacuation from the outer disc face, minimizing thermal transfer to hubs and wheel bearings—helping reduce maintenance costs on these expensive components. Internal Vane Engineering: Airflow Optimization & Thermal Stability AP Racing’s internal vane design sets them apart from OEM and most aftermarket competitors. While many factory brake discs use non-directional pillar vanes (low-cost and NVH-focused), AP Racing rotors use directional vanes engineered for maximum airflow. These rotors are side-specific—meaning you’ll receive a unique left and right disc in each set—ensuring optimized cooling through strategic vane orientation and shape. Beyond that, AP Racing rotors feature a superior vane count, typically ranging from 60 to 84 vanes, compared to 30–48 in most aftermarket rotors. After extensive CFD and thermal analysis, this high vane count was proven to: Increase airspeed and thermal transfer Reduce recirculation and deflection at the disc face Minimize coning, cracking, and brake fade Deliver more even pad contact and extended rotor life J Hook Slot Pattern: Exclusive to AP Racing Slots and drill holes may improve initial bite, but they also introduce “cool spots” in the rotor face—areas of uneven heating that can lead to stress risers, cracks, and pad vibration. OEM rotors often avoid this by leaving the disc face blank, but that compromises bite and brake feel. AP Racing’s patented J Hook design, developed through rigorous R&D, solves this problem. The hooks are meticulously spaced around the disc’s circumference and from hat to edge, forming a continuous distortion path that ensures even heat distribution. This encourages uniform pad deposits during bed-in, helps reduce judder and cracking, and improves consistency under repeated high-load braking. In addition, the J Hook slots provide more leading edges for pads to grip than traditional curved slots or blank rotors. While this might generate a mild whirring sound during braking, the benefits—more bite, cleaner bedding, better pedal feel—make it the top choice for committed racers and serious track day drivers. Metallurgy Backed by 50+ Years of Motorsport Leadership AP Racing's reputation is built on performance, and their proprietary iron alloy used in J Hook rotors is no exception. Drawing from over five decades of elite motorsport experience, including 750+ Formula 1 wins and widespread use across NASCAR, AP’s engineers have developed a disc alloy that excels under sustained racing temperatures and stress. Where OEM discs focus on affordability and mass production, AP Racing’s J Hook rotors are purpose-built for motorsport durability and heat resistance. Affordable Replacement Cost: Serious Value for Serious Drivers Even the best brake rotors are consumables. When you drive hard—especially at the track—your discs will eventually wear out. That’s why AP Racing designed their replacement iron rings to be cost-effective, allowing you to replace worn parts without breaking the bank. Compare that to constantly buying cheap $150 rotors every weekend—rotors that can't handle the heat and need to be swapped frequently. With AP Racing’s J Hook rotors, you get longer service intervals, less downtime, and better performance over time, making them an incredibly smart long-term investment. Proven on Track. Trusted by Champions. Top-tier racing teams rely on AP Racing J Hook rotors for one reason: they perform under pressure. Whether you're running time trials, attending HPDE events, or competing in wheel-to-wheel racing, these rotors offer professional-grade reliability, safety, and performance. Bedding and Preparation of AP Racing J Hook Discs Properly preparing your new brake discs before heavy use is extremely important. The goal of bedding-in your brake pads and discs is to mate them together properly and prepare them for heavy use.  When prepared properly, or bed-in, your pads will transfer a thin layer of material to the disc face (transfer layer).  The pads in your caliper will then actually ride on that thin layer of pad material you’ve put down on the rotor, rather than rubbing directly on the iron rotor face.  A good transfer layer is going to give you superior brake pedal feel, less noise, superior pad wear, and lower the chances of cracking your discs. Important Notes- PLEASE READ! First, make sure you are on a closed course to perform a proper bed-in.  Do NOT perform the procedure on public roads.  You need a stretch of asphalt with long straights, good visibility, and no potential obstructions.  Make sure you are in a position to safely and repeatedly attain the necessary speeds to perform the bed-in procedure.  A controlled racetrack is the best place to perform this procedure.  AP Racing and Competition Motorsport in no way suggest or condone speeding on public roads or breaking the law in your car, nor do we take responsibility for any damage or injury that occurs as a result of using our product or these procedures.  You are performing the bed-in procedure at your own risk.  During these procedures, it’s critical that you never come to a complete stop with your foot on the brake pedal.  If you have brake ducts on your car, you may want to block them off to allow your brake system to heat up easily. The procedure outlined below is a generic procedure for most types of mild race pad.  Please check your pad manufacturer’s recommended bed-in procedure. Accelerate to approximately 60mph and then decelerate down to 5 mph.  If your car has ABS, you should try to hold the brakes at a point just before ABS intervention.  Once the car slows to 5mph, immediately accelerate back up to about 60mph, and brake again to roughly 5mph.  Repeat this series of stopping and accelerating 8 to 10 times.  Again, do not come to a complete stop with your foot on the brake pedal. Cool the brake system down by cruising at 45mph+ for 5 to 10 minutes. Visually inspect your discs.  They should be a blue/grey color (instead of shiny silver), and have an even layer of pad material across and around the entire rotor face. If the AP Racing rotors don’t have a layer of pad material on them, perform another series of stops in the manner outlined above.

AP Racing J Hook 390x36mm Replacement Brake Rotor Rings This kit is two replacement rotor discs and associated installation hardware only. Center hat is not included. Replacement discs for AP Racing 13.01.20145. Fits The Following Cars: Porsche 991 911 Carrera Porsche 991 911 S/4S/GTS Porsche 992 911 Carrera Sold/priced per pair of rotor rings (including hardware). 390x36mm (15.35" x 1.42") 72-vane, D66, J Hook Iron Racing Brake Disc Replacements AP Racing J Hook Brake Rotors – The Gold Standard in Track Day & Racing Performance Engineered for professional motorsport, HPDE, and dedicated track day use, AP Racing’s J Hook Brake Rotors deliver uncompromising performance, thermal stability, and consistent braking power. These two-piece, floating rotors are built to handle the extreme demands of road racing, with design features derived from over 50 years of elite competition—including Formula 1, NASCAR, and IMSA. Unlike conventional one-piece rotors, AP Racing’s two-piece floating design features a billet aluminum hat mated to a cast iron disc via precision-engineered bobbins. This setup allows for controlled radial expansion under high heat, minimizing distortion and coning. The result? More even pad wear, a firmer pedal feel, and longer component life, even during extended lapping sessions or endurance racing. Floating hardware includes anti-knockback spring clips that reduce piston retraction while eliminating common NVH issues like rattling. Why Choose AP Racing J Hook Rotors? Advanced Cooling, Superior Bite, Unmatched Durability At the heart of every rotor is AP Racing’s proprietary high-carbon iron alloy, developed to withstand repeated thermal cycling without cracking or warping. Internally, directional vanes—far superior to OEM pillar or straight vane designs—maximize airflow and cooling. With 60 to 84 vanes per rotor, AP Racing achieves faster heat evacuation, reduced brake fade, and a more consistent friction surface. These rotors are left/right-specific for optimal airflow and balance. The exclusive J Hook slot pattern offers enhanced initial bite and promotes uniform heat distribution across the rotor face, reducing pad deposits and vibration. Unlike drilled rotors or straight-slot competitors, the J Hook design provides cleaner pad transfer during bed-in and superior modulation under braking—ideal for serious drivers who demand feedback and control. Yes, you might hear a little more whirr, but you’ll gain the stopping power, consistency, and longevity your lap times demand. Premium Components, Affordable Performance The rotor hats are CNC-machined from 6061-T6 billet aluminum and hard anodized for strength and heat resistance. Scalloped edges under the hat further assist heat dissipation. All hardware is U.S.-made to AP Racing spec, the same quality found on pro-level racing platforms. And while these rotors are race-proven, they’re also surprisingly cost-effective to replace. Don’t settle for cheap rotors that crack after a weekend—AP’s J Hook rings offer better durability and real long-term value. Fewer replacements mean more track time, less downtime, and peace of mind knowing you're running the best. Used by Champions. Trusted by Experts. From endurance racers to HPDE enthusiasts, AP Racing brake rotors are trusted worldwide for their reliability, longevity, and performance under pressure. Whether you're shaving seconds off your lap time or building a dedicated track car, the J Hook delivers a professional-grade solution that won’t let you down. AP Racing J Hook Brake Rotors for Auto Racing, Track Days & HPDE Why Rotor Design Matters: Heat Expansion and Floating Technology As with most metals, iron brake discs expand significantly under heat. When temperatures rise, the disc grows radially—expanding in both diameter and circumference. Traditional one-piece rotors struggle to accommodate this natural expansion. As the outer edge pulls away from the center under heat stress, it creates a condition called “coning”—a distortion that compromises pad-to-rotor contact. This distortion can lead to uneven pad wear, brake tapering, and an inconsistent, long brake pedal. AP Racing two-piece floating brake rotors are purpose-built to eliminate these issues. Engineered with “float” built into the disc or hat assembly, these rotors feature oblong-shaped mounting holes that allow the hardware to slide as the disc heats up. This flexibility ensures the disc runs true within the caliper under high-temperature loads, effectively reducing distortion, minimizing pad taper and stress cracks, and promoting longer component life. Custom Mounting Hardware & Anti-Knockback Spring Clips AP Racing rotors utilize application-specific, U.S.-made mounting hardware—not generic bolts. These premium components are the exact parts used in AP’s professional motorsport products, engineered to withstand the rigors of competitive racing. To manage lateral disc motion that can push caliper pistons backward (known as knockback), AP Racing integrates anti-knockback spring clips on alternating bobbins—five on a ten-bolt setup, six on a twelve-bolt disc. These clips keep the aluminum hat and iron disc ring properly aligned while still allowing for radial float. Bonus: they eliminate annoying rattles and vibrations, ensuring a quieter, more refined braking experience. High-Performance Hat Design for Heat Isolation The disc hats in AP Racing’s two-piece floating rotors are CNC-machined from 6061-T6 billet aluminum and finished with a hard anodized coating. This high-strength aluminum alloy was selected for its ability to maintain structural integrity even at elevated temperatures. AP adds scalloped channels beneath the hat to further encourage airflow and heat evacuation from the outer disc face, minimizing thermal transfer to hubs and wheel bearings—helping reduce maintenance costs on these expensive components. Internal Vane Engineering: Airflow Optimization & Thermal Stability AP Racing’s internal vane design sets them apart from OEM and most aftermarket competitors. While many factory brake discs use non-directional pillar vanes (low-cost and NVH-focused), AP Racing rotors use directional vanes engineered for maximum airflow. These rotors are side-specific—meaning you’ll receive a unique left and right disc in each set—ensuring optimized cooling through strategic vane orientation and shape. Beyond that, AP Racing rotors feature a superior vane count, typically ranging from 60 to 84 vanes, compared to 30–48 in most aftermarket rotors. After extensive CFD and thermal analysis, this high vane count was proven to: Increase airspeed and thermal transfer Reduce recirculation and deflection at the disc face Minimize coning, cracking, and brake fade Deliver more even pad contact and extended rotor life J Hook Slot Pattern: Exclusive to AP Racing Slots and drill holes may improve initial bite, but they also introduce “cool spots” in the rotor face—areas of uneven heating that can lead to stress risers, cracks, and pad vibration. OEM rotors often avoid this by leaving the disc face blank, but that compromises bite and brake feel. AP Racing’s patented J Hook design, developed through rigorous R&D, solves this problem. The hooks are meticulously spaced around the disc’s circumference and from hat to edge, forming a continuous distortion path that ensures even heat distribution. This encourages uniform pad deposits during bed-in, helps reduce judder and cracking, and improves consistency under repeated high-load braking. In addition, the J Hook slots provide more leading edges for pads to grip than traditional curved slots or blank rotors. While this might generate a mild whirring sound during braking, the benefits—more bite, cleaner bedding, better pedal feel—make it the top choice for committed racers and serious track day drivers. Metallurgy Backed by 50+ Years of Motorsport Leadership AP Racing's reputation is built on performance, and their proprietary iron alloy used in J Hook rotors is no exception. Drawing from over five decades of elite motorsport experience, including 750+ Formula 1 wins and widespread use across NASCAR, AP’s engineers have developed a disc alloy that excels under sustained racing temperatures and stress. Where OEM discs focus on affordability and mass production, AP Racing’s J Hook rotors are purpose-built for motorsport durability and heat resistance. Affordable Replacement Cost: Serious Value for Serious Drivers Even the best brake rotors are consumables. When you drive hard—especially at the track—your discs will eventually wear out. That’s why AP Racing designed their replacement iron rings to be cost-effective, allowing you to replace worn parts without breaking the bank. Compare that to constantly buying cheap $150 rotors every weekend—rotors that can't handle the heat and need to be swapped frequently. With AP Racing’s J Hook rotors, you get longer service intervals, less downtime, and better performance over time, making them an incredibly smart long-term investment. Proven on Track. Trusted by Champions. Top-tier racing teams rely on AP Racing J Hook rotors for one reason: they perform under pressure. Whether you're running time trials, attending HPDE events, or competing in wheel-to-wheel racing, these rotors offer professional-grade reliability, safety, and performance. Bedding and Preparation of AP Racing J Hook Discs Properly preparing your new brake discs before heavy use is extremely important. The goal of bedding-in your brake pads and discs is to mate them together properly and prepare them for heavy use.  When prepared properly, or bed-in, your pads will transfer a thin layer of material to the disc face (transfer layer).  The pads in your caliper will then actually ride on that thin layer of pad material you’ve put down on the rotor, rather than rubbing directly on the iron rotor face.  A good transfer layer is going to give you superior brake pedal feel, less noise, superior pad wear, and lower the chances of cracking your discs. Important Notes- PLEASE READ! First, make sure you are on a closed course to perform a proper bed-in.  Do NOT perform the procedure on public roads.  You need a stretch of asphalt with long straights, good visibility, and no potential obstructions.  Make sure you are in a position to safely and repeatedly attain the necessary speeds to perform the bed-in procedure.  A controlled racetrack is the best place to perform this procedure.  AP Racing and Competition Motorsport in no way suggest or condone speeding on public roads or breaking the law in your car, nor do we take responsibility for any damage or injury that occurs as a result of using our product or these procedures.  You are performing the bed-in procedure at your own risk.  During these procedures, it’s critical that you never come to a complete stop with your foot on the brake pedal.  If you have brake ducts on your car, you may want to block them off to allow your brake system to heat up easily. The procedure outlined below is a generic procedure for most types of mild race pad.  Please check your pad manufacturer’s recommended bed-in procedure. Accelerate to approximately 60mph and then decelerate down to 5 mph.  If your car has ABS, you should try to hold the brakes at a point just before ABS intervention.  Once the car slows to 5mph, immediately accelerate back up to about 60mph, and brake again to roughly 5mph.  Repeat this series of stopping and accelerating 8 to 10 times.  Again, do not come to a complete stop with your foot on the brake pedal. Cool the brake system down by cruising at 45mph+ for 5 to 10 minutes. Visually inspect your discs.  They should be a blue/grey color (instead of shiny silver), and have an even layer of pad material across and around the entire rotor face. If the AP Racing rotors don’t have a layer of pad material on them, perform another series of stops in the manner outlined above.

Porsche 718 S, 991, 992 911 Carrera Front Rotors Bring race-proven braking performance to your Porsche with Girodisc’s 2-piece floating front rotors. Designed as a direct replacement for the factory rotors and supplied with precision-fit spacers and bolts, this system delivers improved cooling, lighter weight, and more consistent pedal feel under extreme braking. Perfect for the 718 S, 991.2 Carrera, and 992.1 Carrera, these rotors maintain OEM brake balance while drastically enhancing heat control and durability. Performance You Can Feel Every Lap Each Girodisc assembly is precision-machined and hand-finished in the USA from premium materials. The aluminum hat is crafted from 6061-T6 aircraft-grade alloy and anodized for corrosion protection. The iron rings are cast from Girodisc’s proprietary high-carbon alloy, designed for strength and stability under repeated thermal load. The 350mm rotor uses a curved vane design that acts as a centrifugal air pump, pulling cooling air through the rotor to prevent fade and extend pad life. Supplied hardware and spacers ensure exact alignment and fitment to your Porsche’s factory calipers and hub assembly. A1-203 Girodisc 350mm 2pc Front Brake Rotor Vehicle Fitment Porsche 718 Cayman / Boxster S (2017+) Porsche 911 Carrera (991.2 & 992.1 base and S models) A1-203 Girodisc 350mm 2pc Front Brake Rotor Features Direct OEM Replacement: Bolts directly to factory hubs and calipers; includes necessary spacers and bolts for easy installation. Lightweight 2-Piece Design: Reduces unsprung and rotational mass for better handling and braking response. Curved Vane Cooling: Internal vanes pull air through the rotor for optimal cooling and fade resistance. Floating Mount System: Ten high-strength steel pins with anti-noise spring washers allow smooth heat expansion without vibration. Replaceable Rotor Rings: Reuse the aluminum hats—replace only the cast iron rings when worn. Made in the USA: Designed, cast, machined, and assembled under strict quality control at Girodisc’s facility in Washington. A1-203 Girodisc 350mm 2pc Front Brake Rotor FAQs Do these rotors include all hardware? Yes, each kit comes with spacers and bolts needed for proper installation on OEM hubs and calipers. How do they compare to stock rotors? Girodisc rotors weigh less, cool faster, and handle repeated high-heat cycles better than OEM cast discs. Are they compatible with factory brake pads? Yes, these rotors are designed to work perfectly with OEM or aftermarket pads. Can they handle track use? Absolutely—Girodisc rotors are engineered for consistent performance during aggressive street driving and heavy circuit use. Experience smoother, stronger, and more reliable braking with Girodisc’s front rotor upgrade for your Porsche 718 S, 991.2, or 992.1 Carrera. Lightweight, track-tested, and built to last—this is the rotor setup your Porsche deserves.

Girodisc 350mm Porsche 996 / 991 / 992 Rear Rotors (with Spacers & Bolts) The Girodisc A2-032B Rear Rotor Kit is a premium direct-fit replacement for Porsche 996, 991, and 992 models. Engineered for high-performance driving, this system includes caliper spacers and longer bolts to accommodate the larger 350mm rotors. The result is improved braking torque, enhanced cooling efficiency, and reduced unsprung mass—all while retaining factory fitment and ABS calibration. Lightweight Design & Increased Performance Each Girodisc rotor assembly pairs a CNC-machined 6061-T6 aluminum hat with a proprietary cast iron disc. The 2-piece design significantly reduces rotational mass compared to OEM rotors, improving suspension response and acceleration. The curved vane design acts as a centrifugal pump, drawing air through the rotor to enhance cooling and resist fade under extreme braking conditions. Precision Floating Mount System The rotors feature Girodisc’s race-proven floating mount design with 10 cadmium-plated steel drive pins connecting the iron ring to the aluminum hat. These pins allow the disc to expand radially under high temperatures without warping, ensuring consistent pad contact. Anti-noise spring washers eliminate rattle, maintaining quiet operation suitable for street and track use alike. Girodisc A2-032B 350mm 2pc Porsche Rear Rotor Vehicle Fitment Porsche 996 Carrera / Carrera 4 / Carrera 4S Porsche 991 Carrera / Carrera 4 / Carrera GTS (Base models require S/4S/GTS rear pad shape for full rotor sweep) Porsche 992 Carrera / Carrera S / Carrera 4S Direct bolt-on installation with supplied spacers and hardware Technical Specifications CMS Number: A2-032B Position: Rear Rotor Diameter: 350mm (includes caliper spacers & longer bolts) Design: 2-piece floating rotor assembly Material: Proprietary cast iron with 6061-T6 aluminum hat Vane Design: Curved directional vanes for improved airflow Hardware: Cadmium-plated steel drive pins, class 12.9 screws, anti-noise washers Rebuildable: Yes — replace rotor rings, reuse aluminum hats Sold/Price: Per pair Girodisc A2-032B 350mm 2pc Porsche Rear Rotor FAQs Do these rotors fit all Porsche 996, 991, and 992 models? Yes. However, 991 base Carrera models must use the S/4S/GTS rear pad shape for full pad sweep. What is included with this kit? Each kit includes two 350mm rotors, caliper spacers, and longer mounting bolts for a complete direct installation. Are modifications required? No. The supplied hardware makes this a true bolt-on upgrade using factory calipers and lines. What are the main benefits over stock rotors? Improved cooling, reduced weight, better pedal response, and replaceable rings for long-term cost savings. Upgrade your Porsche’s braking system with the Girodisc A2-032B Rear Rotor Kit. Experience reduced fade, sharper braking response, and long-term durability whether on the street or at the track.

Girodisc Porsche 350mm Rear Rings Restore precise braking feel in your Porsche with Girodisc D2-032 350mm rear replacement rings. These precision-machined rings bolt directly to existing Girodisc aluminum hats using the included floating hardware kit. Replace only the wear surface and maintain the lightweight, high-performance benefits of your Girodisc two-piece system — perfect for both road and track driving. Vehicle Fitment Compatible with:• Porsche 997 Carrera S (rear)• Porsche 997 Carrera 4S (rear)• Porsche 997 GTS (rear)• Porsche 997 Targa 4S (rear)Note: For Girodisc 350mm two-piece rear rotor systems only. Not compatible with OEM or PCCB carbon-ceramic rotors. Features • Sold as a left/right pair with new floating hardware kit• Direct replacements for Girodisc 350mm two-piece rear rotors• High-carbon cast iron delivers excellent heat dissipation and strength• Curved directional vanes maximize cooling and prevent fade• Maintains factory brake bias and ABS calibration• Designed exclusively for Girodisc aluminum hats – not compatible with OEM or other brands Specifications • Diameter: 350mm• Position: Rear• Material: High-carbon cast iron• Mount type: Floating two-piece system• Includes: Two rings and complete hardware kit• Sold/priced per pair• MSRP: $880.00 Girodisc D2-032 Porsche 997 Rear Replacement Ring FAQs Do these fit the factory Porsche two-piece rotors? No. These are designed only for Girodisc aluminum hats and are not compatible with OEM rotor assemblies. Can I use these with the factory calipers? Yes. These rings are designed to work seamlessly with the stock Porsche calipers when paired with Girodisc hats. Are they suitable for heavy track use? Absolutely. Girodisc’s floating design and high-carbon alloy handle repeated high-temperature braking without warping or cracking. When should I replace my Girodisc rings? Replace them when the rotors reach minimum thickness or show visible surface heat checking from repeated track cycles. Upgrade your Porsche’s braking performance with Girodisc D2-032 350mm rear replacement rings — precision-engineered for balance, cooling, and endurance under the toughest driving conditions.

Girodisc Porsche 718, 991.2, 992.1 Carrera Front Replacement Rings Refresh the braking precision of your Porsche Carrera with Girodisc D1-203 350 mm front replacement rings. These precision-engineered rings bolt directly to your existing Girodisc aluminum hats using the included floating hardware kit. Cast from Girodisc’s proprietary high-carbon iron alloy, they deliver enhanced cooling, consistent friction, and fade-free braking in both street and track environments. Vehicle Fitment Compatible with:• Porsche 718 Cayman / Boxster S & GTS (Front)• Porsche 991.2 Carrera / Carrera S (Front)• Porsche 992.1 Carrera / Carrera S (Front)Note: Designed exclusively for Girodisc 350 mm two-piece front rotor systems. Not compatible with OEM PCCB or one-piece iron rotors. Features • Sold as a left/right pair with complete floating hardware kit• Direct replacements for Girodisc 350 mm two-piece front rotors• CNC-machined from high-carbon cast iron for superior thermal stability• Directional curved vanes enhance airflow and reduce heat buildup• Maintains factory brake bias and ABS calibration• Precision-balanced for vibration-free operation• Designed exclusively for Girodisc aluminum hats – not compatible with OEM or other brands Specifications • Diameter: 350 mm• Position: Front• Material: High-carbon cast iron• Mount type: Floating two-piece system• Includes: Two rotor rings and complete hardware kit• Sold/priced per pair Girodisc D1-203 Porsche 718 / 991.2 / 992.1 Carrera Front Replacement Ring FAQs Are these compatible with Porsche PCCB carbon-ceramic systems? No. The D1-203 rings are designed for Girodisc steel two-piece systems only and will not fit PCCB setups. Do they fit both 718 and 992 Carrera models? Yes. They share identical rotor dimensions and fitment when using Girodisc hats designed for each chassis. How do they compare to OEM rotors in performance? Girodisc rings provide improved cooling efficiency, reduced unsprung weight, and lower replacement cost over OEM options. Are they quiet enough for street driving? Yes. The floating system is engineered for minimal noise during daily use while maintaining full race-level durability under heat. Upgrade your Porsche 718, 991.2, or 992.1 Carrera with Girodisc D1-203 350 mm front replacement rings — precision-built for balanced braking, exceptional cooling, and long-term performance on road or track.

Pagid Racing Brake Pad Shape No. 4908 Fits The Following Vehicles: Make Model Build (Year) Front Rear Porsche 991 3.4 Carrera [ceramic brakes] 12 - 19 X Porsche 991 3.8 Carrera S [ceramic brakes] 12 - 19 X Porsche 991.2 3.0 Carrera [ceramic brakes] 16 - 19 X Porsche 991.2 3.0 Carrera S [ceramic brakes] 16 - 19 X Porsche 991.2 3.0 Carrera S [iron brakes] 16 - 19 X Porsche 991.2 3.0 Carrera GTS [iron brakes] 17 - 19 X Porsche Cayman S [981] [ceramic brakes] 13 - 25 X Porsche 718 Cayman [982C] [ceramic brakes] 16 - 25 X Porsche 718 Cayman S [982C] [ceramic brakes] 16 - 25 X Porsche 718 Cayman T [982C] [ceramic brakes] 19 - 25 X Porsche 718 Cayman GTS [982C] [ceramic brakes] 17 - 20 X Porsche 718 Cayman GTS 4.0 [982C] [ceramic brakes] 20 - 25 X Porsche 718 Boxster [982] [ceramic brakes] 16 - 25 X Porsche 718 Boxster S [982] [ceramic brakes] 16 - 25 X Porsche 718 Boxster T [982] [ceramic brakes] 19 - 25 X Porsche 718 Boxster GTS [982] [ceramic brakes] 17 - 20 X Porsche 718 Boxster GTS 4.0 [982] [ceramic brakes] 20 - 25 X Porsche 718 Spyder [982] [ceramic brakes] 19 - 25 X Porsche 718 Cayman T [982C] [ceramic brakes] 19 - 25 X Pagid Racing Brake Pads are engineered for high-performance driving, delivering exceptional stopping power, durability, and control under the most demanding conditions. Trusted by professional racers and performance enthusiasts worldwide, these pads are crafted using advanced friction materials and cutting-edge technology to ensure consistent performance, low fade, and excellent modulation. Whether you're on the track or tackling aggressive street driving, Pagid Racing Brake Pads provide the reliability and confidence you need to push your vehicle to its limits. Pagid Racing Brake compounds are for steel (cast iron) rotors only unless otherwise noted. RSL 29 Compound: The Pagid RSL 29 (Yellow) is the world-leading endurance brake pad used by most of the winning teams in motorsport. Although designed primarily for endurance racing, many competitors use this material successfully for sprint and short distance races also. RS29 has also found favor in the growing track day market due to the level of control, good cold performance, long life and low disc wear. Pagid RSC 1 Compound (Ceramic Rotors Only) A race and track day compound for all known types of ceramic brake discs, RSC 1 is a low metallic resin bonded material containing steel and aramid fibers. This material features good all-round characteristics and is suitable for all types of usage. Pagid RSC 3 Compound (Ceramic Rotors Only) RSC 3 is a low metallic resin bonded material containing steel fibers. This material is specifically developed for above mentioned applications. It is a special race compound for ceramic discs with low content of fibers in the friction surface for sprint and endurance circuit racing. Pagid RSL 1 Compound Used in GT cars, touring cars and prototype endurance racing. Due to the high friction and good modulation, often used in sprint races as well. RSL 1 is a low metallic resin bonded material containing steel and aramid fibers with very high heat resistance. It maintains a constant friction level over a wide range of temperatures. Its reduced wear rate and disc friendliness make this material appropriate for endurance races. Pagid RST 1 Compound Used in Rally tarmac, GT cars and touring cars circuit racing (sprint), high down-force formula cars, NASCAR. Suitable for applications in heavy cars and where high torque is necessary against small diameter rotors. RST 1 has a very high friction level and high temperature resistance. It is a semi-metallic resin bonded material containing steel fibers. Cold friction and initial bite makes this material most appropriate for Rally and NASCAR applications. Pagid RST 3 Compound: RST 3 is a medium-high friction metal-ceramic compound containing steel fibers and is therefore the perfect complement of the RST product family. It captivates by its low heat conductivity. Rally tarmac and gravel, GT cars, touring cars and prototype circuit racing, formula cars and club racing. Wide range of applications due to it‘s combination of bite, friction and controllability.

Cobalt Brake Pads Porsche D1389 Racing Brake Pads (Rear) - 18mm Cobalt D1389 Fits The Following Vehicles: Make Model Build (Year) Front Rear Porsche 991 3.4 Carrera [iron brakes] 12 - 16 X Porsche 991.2 3.0 Carrera [iron brakes] 17 - 19  X Porsche 992 3.0 Carrera [iron brakes] 20 - X Porsche 997 3.6 C & 3.6 C4 08 - 11 X Porsche 718 Boxster 2.0 [982] 16 - X Porsche 718 Boxster S 2.5 [982] 16 - X Porsche Boxster 2.7 [981] 12 - X Porsche Boxster GTS 3.4 [981] 14 - X Porsche Boxster S 3.4 [981] 12 - X Porsche 718 Cayman 2.0 [982] 16 - X Porsche 718 Cayman S 2.5 [982] 16 - X Porsche Cayman 2.7 [981] 13 - X Porsche Cayman GTS 3.4 [981] 14 - X Porsche Cayman S 3.4 [981] 13 - X Cobalt Friction Technologies, Inc. is a leading developer & manufacturer of friction compounds for high-performance and professional motorsport disc brake applications. With our industry-leading range of race-proven XR-Series Carbon-Ceramic materials, Cobalt has a solution to meet your most demanding performance requirements, while always exceeding your expectations with superior technical and race engineering support. PASSION The heart and soul of Cobalt Friction Technologies is fueled by our never-ending passion for motorsports. Our teams and drivers continually place greater demands on their equipment, and Cobalt Friction is there to satisfy these demands every step along the way. PERFORMANCE Cobalt Friction's customer-driven research & development is what sets us apart from the competition. Our engineers do not design compounds based on lab results alone or to solely meet overly simplified, uni-dimensional "performance criteria". Rather, we continually "step outside the box" by working with and collecting feedback from our drivers and teams at all levels of professional and amateur motorsports, right there at the race track...week in and week out. When being the best and finishing first is the only option, Cobalt Friction accepts zero compromises, and so do our customers and teams. TECHNICAL EXCELLENCE Cobalt-equipped drivers and teams are backed by race engineering support that is second to none. From the garages at the Rolex 24 at Daytona to the paddock at the SCCA Nationals, Cobalt Friction Technologies delivers the products, knowledge and power to win.

Pagid Racing Brake Pad Shape No 4909 Fits The Following Vehicles: Make Model Build (Year) Front Rear Porsche 991 3.4 Carrera [ceramic brake caliper with RBD cast iron disc ] 2011 -19 X Porsche 991 3.4 Carrera [ceramic brakes] 2011 - 15 X Porsche 991 3.8 Carrera S [ceramic brake caliper with RBD cast iron disc] 2011 -19 X Porsche 991 3.8 Carrera S [ceramic brakes] 2011 - 15 X Porsche 991 3.8 Carrera S / GTS [iron brakes] 2011 - 15 X Porsche 991.2 3.0 Carrera [ceramic brakes] 2015 - 19 X Porsche 991.2 3.0 Carrera S [ceramic brakes] 2015 - 19 X Porsche 991.2 3.0 Carrera S [iron brakes] 2015 - 19 X Porsche 991.2 3.0 Carrera GTS [iron brakes] 2017 - 19 X Porsche 992 3.0 Carrera [iron brakes] 2020 + X Porsche 992 3.0 Carrera S [iron brakes] 2020 + X Porsche 992 3.0 Carrera 4S [iron brakes] 2020 + X Pagid Racing Brake Pads are engineered for high-performance driving, delivering exceptional stopping power, durability, and control under the most demanding conditions. Trusted by professional racers and performance enthusiasts worldwide, these pads are crafted using advanced friction materials and cutting-edge technology to ensure consistent performance, low fade, and excellent modulation. Whether you're on the track or tackling aggressive street driving, Pagid Racing Brake Pads provide the reliability and confidence you need to push your vehicle to its limits. Pagid Racing Brake compounds are for steel (cast iron) rotors only unless otherwise noted. RSL 29 Compound: The Pagid RSL 29 (Yellow) is the world-leading endurance brake pad used by most of the winning teams in motorsport. Although designed primarily for endurance racing, many competitors use this material successfully for sprint and short distance races also. RS29 has also found favor in the growing track day market due to the level of control, good cold performance, long life and low disc wear. RSL 19 Compound: Pagid RSL 19 is a low metallic resin bonded material containing steel and aramid fibers. It maintains a constant friction level across a broad range of temperatures. The material features very good modulation and release characteristics. Rear axle usage in combination with RSL 1 or RSL 2 on the front axle in heavier cars (GT3/GTE). Front axle usage for lighter GT and touring cars. Pagid RSL 1 Compound Used in GT cars, touring cars and prototype endurance racing. Due to the high friction and good modulation, often used in sprint races as well. RSL 1 is a low metallic resin bonded material containing steel and aramid fibers with very high heat resistance. It maintains a constant friction level over a wide range of temperatures. Its reduced wear rate and disc friendliness make this material appropriate for endurance races. Pagid RSC 1 Compound (Ceramic Rotors Only) A race and track day compound for all known types of ceramic brake discs, RSC 1 is a low metallic resin bonded material containing steel and aramid fibers. This material features good all-round characteristics and is suitable for all types of usage. Pagid RSC 3 Compound (Ceramic Rotors Only) RSC 3 is a low metallic resin bonded material containing steel fibers. This material is specifically developed for above mentioned applications. It is a special race compound for ceramic discs with low content of fibers in the friction surface for sprint and endurance circuit racing. Pagid RST 1 Compound Used in Rally tarmac, GT cars and touring cars circuit racing (sprint), high down-force formula cars, NASCAR. Suitable for applications in heavy cars and where high torque is necessary against small diameter rotors. RST 1 has a very high friction level and high temperature resistance. It is a semi-metallic resin bonded material containing steel fibers. Cold friction and initial bite makes this material most appropriate for Rally and NASCAR applications. Pagid RST 3 Compound: RST 3 is a medium-high friction metal-ceramic compound containing steel fibers and is therefore the perfect complement of the RST product family. It captivates by its low heat conductivity. Rally tarmac and gravel, GT cars, touring cars and prototype circuit racing, formula cars and club racing. Wide range of applications due to it‘s combination of bite, friction and controllability.

Cobalt Brake Pads Porsche D1417 Racing Brake Pads (Rear) - 16mm Cobalt D1417 Fits The Following Vehicles: Make Model Build (Year) Front Rear Porsche 991 3.4 Carrera [ceramic brake caliper with RBD cast iron disc ] 11 -19 X Porsche 991 3.4 Carrera [ceramic brakes] 11 - 15 X Porsche 991 3.8 Carrera S [ceramic brake caliper with RBD cast iron disc] 11 -19 X Porsche 991 3.8 Carrera S [ceramic brakes] 11 - 15 X Porsche 991 3.8 Carrera S / GTS [iron brakes] 11 - 15 X Porsche 991.2 3.0 Carrera [ceramic brakes] 15 - 19 X Porsche 991.2 3.0 Carrera S [ceramic brakes] 15 - 19 X Porsche 991.2 3.0 Carrera S [iron brakes] 15 - 19 X Porsche 991.2 3.0 Carrera GTS [iron brakes] 17 - 19 X Porsche 992 3.0 Carrera [iron brakes] 20 -  X Porsche 992 3.0 Carrera S [iron brakes] 20 -  X Porsche 992 3.0 Carrera 4S [iron brakes] 20 -  X Cobalt Friction Technologies, Inc. is a leading developer & manufacturer of friction compounds for high-performance and professional motorsport disc brake applications. With our industry-leading range of race-proven XR-Series Carbon-Ceramic materials, Cobalt has a solution to meet your most demanding performance requirements, while always exceeding your expectations with superior technical and race engineering support. PASSION The heart and soul of Cobalt Friction Technologies is fueled by our never-ending passion for motorsports. Our teams and drivers continually place greater demands on their equipment, and Cobalt Friction is there to satisfy these demands every step along the way. PERFORMANCE Cobalt Friction's customer-driven research & development is what sets us apart from the competition. Our engineers do not design compounds based on lab results alone or to solely meet overly simplified, uni-dimensional "performance criteria". Rather, we continually "step outside the box" by working with and collecting feedback from our drivers and teams at all levels of professional and amateur motorsports, right there at the race track...week in and week out. When being the best and finishing first is the only option, Cobalt Friction accepts zero compromises, and so do our customers and teams. TECHNICAL EXCELLENCE Cobalt-equipped drivers and teams are backed by race engineering support that is second to none. From the garages at the Rolex 24 at Daytona to the paddock at the SCCA Nationals, Cobalt Friction Technologies delivers the products, knowledge and power to win.

GiroDisc 1417 Rear Racing Brake Pads  GP30-1417.16 Brake Pads Designed to deliver race-level performance on the street, these pads blend aggressive stopping power with rotor preservation, making them an ideal choice for motorsport enthusiasts who demand reliability and precision. The GiroDisc GP30 Endurance Race Pads feature a premium compound optimized for the unique demands of automotive racing and spirited street driving. Their advanced formulation guarantees a firm, predictable bite that enhances braking confidence during high-speed track sessions or aggressive daily driving. These pads are designed to maintain their grip under intense conditions without excessive fade or rotor wear. GP35-1417.16 Brake Pads Our GP35 compound combines the best of both worlds into one all-around race pad. We took some of the longevity of our endurance pads, some of the bite of our sprint pads, and worked to develop a compound that can do it all. As a bonus, it’s easy to bed, which means less time figuring your brakes out, and more time driving on the track. The GP35 is designed to work with street car ABS as well as motorsport-grade ABS found in factory-built race cars. The torque curve is designed to be smooth and linear, which leads to superior modulation and release under trail braking. These pads work with a wide range of tires, from DOT street tires to R-compounds to full race slicks. It has become our most popular compound and is the compound we recommend most frequently to track day drivers and shops running cars in professional racing series. GP40-1417.16 Brake Pads GP40 compound falls between a sprint and an endurance compound. It maintains good bite and pedal feel while being friendly to your rotors. They are a favorite among our track day customers and shares a lineage with compounds found on cars competing in legendary races like the 24 Hours of Le Mans. These pads have been race-tested and hold up to the brutal conditions on the track. GiroDisc 1417 FITMENT GUIDE: Make Model Build (Year) Front Rear Porsche 991 3.4 Carrera [ceramic brake caliper with RBD cast iron disc ] 11 -19 X Porsche 991 3.4 Carrera [ceramic brakes] 11 - 15 X Porsche 991 3.8 Carrera S [ceramic brake caliper with RBD cast iron disc] 11 -19 X Porsche 991 3.8 Carrera S [ceramic brakes] 11 - 15 X Porsche 991 3.8 Carrera S / GTS [iron brakes] 11 - 15 X Porsche 991.2 3.0 Carrera [ceramic brakes] 15 - 19 X Porsche 991.2 3.0 Carrera S [ceramic brakes] 15 - 19 X Porsche 991.2 3.0 Carrera S [iron brakes] 15 - 19 X Porsche 991.2 3.0 Carrera GTS [iron brakes] 17 - 19 X Porsche 992 3.0 Carrera [iron brakes] 20 -  X Porsche 992 3.0 Carrera S [iron brakes] 20 -  X Porsche 992 3.0 Carrera 4S [iron brakes] 20 -  X

GiroDisc 1389 Front Racing Brake Pads  A race pad for all occasions. Our GP35 compound combines the best of both worlds into one all-around race pad. We took some of the longevity of our endurance pads, some of the bite of our sprint pads, and worked to develop a compound that can do it all. As a bonus, it’s easy to bed, which means less time figuring your brakes out, and more time driving on the track. The GP35 is designed to work with street car ABS as well as motorsport-grade ABS found in factory-built race cars. The torque curve is designed to be smooth and linear, which leads to superior modulation and release under trail braking. These pads work with a wide range of tires, from DOT street tires to R-compounds to full race slicks. It has become our most popular compound and is the compound we recommend most frequently to track day drivers and shops running cars in professional racing series. Note: this compound is only compatible with iron rotors. GiroDisc 1389 FITMENT GUIDE: Make Model Build (Year) Front Rear Porsche 991 3.4 Carrera [iron brakes] 12 - 16 X Porsche 991.2 3.0 Carrera [iron brakes] 17 - 19  X Porsche 992 3.0 Carrera [iron brakes] 20 - X Porsche 997 3.6 C & 3.6 C4 08 - 11 X Porsche 718 Boxster 2.0 [982] 16 - 25 X Porsche 718 Boxster S 2.5 [982] 16 - 25 X Porsche Boxster 2.7 [981] 12 - 16 X Porsche Boxster GTS 3.4 [981] 14 - 16 X Porsche Boxster S 3.4 [981] 12 - 16 X Porsche 718 Cayman 2.0 [982] 17 - 25 X Porsche 718 Cayman S 2.5 [982] 17 - 25 X Porsche Cayman 2.7 [981] 13 - 16 X Porsche Cayman GTS 3.4 [981] 14 - 16 X Porsche Cayman S 3.4 [981] 13 - 16 X