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Porsche 991 GT3 /GT3RS Front Rotors Girodisc 2-piece floating rotors are a direct, high-performance replacement for the factory iron rotors on Porsche 991 GT3 and GT3 RS models. Designed to bolt directly to the car with no modifications, these rotors retain compatibility with factory pads—something most aftermarket options can’t claim. The result is OEM fitment with upgraded braking performance, lighter weight, and better heat control under demanding track conditions. Each assembly features a 6061-T6 aluminum hat and Girodisc’s proprietary cast-iron rotor ring, manufactured and machined entirely in the USA. The curved vane design acts as a centrifugal pump, drawing cool air through the rotor to reduce surface temperatures and maintain consistent braking performance even under heavy load. Precision-Engineered Performance A1-146 Girodisc Porsche 991 GT3 / GT3RS Front Rotor Vehicle Fitment Porsche 991 GT3 Porsche 991 GT3 RS A1-146 Girodisc Porsche 991 GT3 / GT3RS Front Rotor Features Direct OEM replacement: Works with stock calipers and pads—no special hardware or machining required. Curved vane cooling: Directional vanes pump air through the disc for optimal heat management and fade resistance. Floating mount system: Twelve cadmium-plated drive pins allow the rotor to expand under heat without distortion or rattle. Factory compatibility: Designed to work with Porsche’s OEM iron rotor setup, retaining proper brake bias and ABS function. Lightweight construction: Reduces rotational mass and improves suspension response without compromising durability. Optional center lock fitment: Available with center lock drive pins for cars equipped with OEM center lock wheels. A1-146 Girodisc Porsche 991 GT3 / GT3RS Front Rotor FAQs Do these fit factory calipers? Yes, they are a direct bolt-on replacement for OEM iron rotors using factory pads and hardware. Will they work with center lock wheels? Yes—select the center lock option when ordering for proper fitment. Are they quieter than stock? Yes, the anti-noise spring washers reduce rattle and ensure smooth, quiet operation. Are they track-proven? Absolutely. When paired with quality pads and hi-temp fluid, these rotors deliver race-level performance and fade resistance. How are they sold? Sold and priced per pair. Step up your GT3’s braking consistency with Girodisc’s precision-built floating rotors—lighter, cooler, and engineered to perform lap after lap.

FITS: Ferrari 458 CHALLENGE   Competition Motorsport is an Authorized dealer for GiroDisc products and we are one of the largest stocking dealers in the country.  We ship most products same or next business day to ensure we meet your delivery deadline.   The GiroDisc system is an upgrade to a 2-piece steel rotor and aluminum hat combination and is a direct replacement for the OEM brake disc.  The 2-piece floating disc will bolt directly to the car and work with OEM calipers perfectly.  By upgrading your brakes with these lightweight high-performance replacements as opposed to a big brake kit, your factory bias is maintained as well as your ABS efficiency.  The Giro Disc rotors are lighter than OEM pieces.  The reduction in rotational and unsprung weight allows for quicker acceleration and suspension response.   When used with Pagid or PFC performance brake pads, and Competition Motorsport RF-1 brake fluid (also available from CompetitionMotorsport.com), you have an amazing solution to overheating, cracking and warping rotors. The central hat section of the disc is made from 6061-T6 aircraft specification aluminum.  The disc is manufactured from cast iron which is constructed in the USA and is made to the same specification with the same material used by professional racing organizations.  The rotors curved vane design was developed in racing and acts as a centrifugal pump to force cooling air through the disc.     The rotor and hat mount together through a floating mount system which utilizes 8-10 high strength alloy steel drive pins manufactured by GiroDisc in the USA to our own specifications and are cadmium plated for corrosion resistance.  The alloy drive pins transfer the load from the brake action while maintaining the axial and radial float between the disc rotor and hat.  The pins are secured by grade12 cap screws with hardened washers and mounted with anti-noise spring washers to allow for heat expansion while eliminating the rattle and noise associated with floating rotors.   The 2-piece GiroDisc design allows for rotor only replacement as well to minimize future replacement costs and deliver outstanding performance and cooling.   Sold/Priced per pair.

A1-128 Girodisc Two-Piece Front Brake Rotors FITMENT: Ferrari 458 Challenge Competition Motorsport is an authorized dealer for Girodisc products and we are one of the largest stocking dealers in the country. We ship most products same or next business day to ensure we meet your delivery deadline. The Girodisc system is an upgrade to a two-piece steel rotor and aluminum hat combination and is a direct replacement for the OEM brake rotors. These two-piece floating rotors will bolt directly to the car and work with your OEM calipers perfectly. By upgrading your brakes with these lightweight, high-performance replacements (as opposed to a big brake kit), your factory brake bias is maintained, along with your ABS efficiency. Girodisc two-piece floating rotors are lighter than OEM brake rotors. This reduction in rotational mass and unsprung weight allows for quicker acceleration, sharper steering, and faster suspension response. When used with Pagid or PFC performance brake pads, and Competition Motorsport RF-1 brake fluid (available from Competition Motorsport), you have an amazing solution to overheating, cracking and warping rotors. The central hat section of the disc is made from 6061-T6 aircraft specification aluminum. The disc is manufactured from cast iron constructed in the USA, made to the same specification with the same material used by professional racing organizations. The rotors' curved vane design was developed in racing and acts as a centrifugal pump to force cooling air through the disc. The rotor and hat mount together through a floating mount system which utilizes ten high strength alloy steel drive pins manufactured by Girodisc in the USA to their own specifications and are cadmium plated for corrosion resistance. The alloy drive pins transfer the load from the brake action while maintaining the axial and radial float between the disc rotor and hat. The pins are secured by Grade-12 cap screws with hardened washers and mounted with anti-noise spring washers to allow for heat expansion while eliminating the rattle and noise associated with floating rotors. The two-piece Girodisc design allows for disc-only replacement as well, minimizing future replacement costs and delivering outstanding performance. Sold/priced per pair.

AP Racing 345x30mm 2-piece J Hook Front Floating Racing Brake Rotors Fit The Following Cars  Corvette C8 Z51 Iron Rotor Rear AP Racing 2-piece Competition J Hook rear disc pair for Corvette C8 Z51 with iron discs 350mm x 28mm (13.78" x 1.10") 72 Vane, D66 Huge increase in airflow, cooling capacity, and durability vs. OEM discs Saves 2 lbs. unsprung weight per side vs. OEM iron discs Designed for: club racing, time trial, auto-x, HPDE Works with OEM calipers, no modifications required Ultralight, fully floating, anodized billet aluminum hat with float control/anti-rattle clips Sold/priced per pair. 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 Disc 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 345x30mm 2-piece J Hook Front Floating Racing Brake Rotors Fit The Following Cars  Corvette C8 Z51 Iron Rotor Front AP Racing by Essex 2-piece Competition J Hook front disc pair for Corvette C8 Z51 with iron discs 345mm x 30mm (13.59" x 1.18") 72 Vane, D66 Huge increase in airflow, cooling capacity, and durability vs. OEM discs Saves 2 lbs. unsprung weight per side vs. OEM iron discs Designed for: club racing, time trial, auto-x, HPDE Works with OEM calipers, no modifications required Ultralight, fully floating, anodized billet aluminum hat with float control/anti-rattle clips Sold/priced per pair. 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 Disc 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.

Sparco Legend Kevlar Racing Seat The Sparco Legend Kevlar Racing Seat is a tribute to the golden era of 1980s rally racing — blending vintage style with modern materials and performance. Crafted from lightweight dry carbon/Kevlar composite, it combines the strength and safety of modern FIA technology with period-correct aesthetics for classic builds. Every detail evokes authentic rally heritage, from its retro stitching and embroidered logos to its classic silhouette. Designed for both function and nostalgia, the Legend Kevlar seat delivers firm lateral support and comfort for long stages while maintaining an unmistakable vintage rally look. Key Features Dry carbon/Kevlar shell for ultra-light strength Integrated headrest and reinforced side bolsters Supportive ergonomic padding for rally endurance Bottom-mount installation for vintage fitment FIA 8855-1999 approved Sizing Medium / Large (fits up to 36" waist)

Sparco QRT-K Carbon Kevlar Racing Seat The QRT-K is a full Carbon Kevlar version of the QRT-R. The QRT-K looks amazing with the exposed yellow/black Carbon Kevlar weave. The QRT-K is one of the lightest seats on the market. The QRT-K weighs 13.5lbs fully trimmed (with padding, cover and harness guides) and is constructed from “Pre-Preg” aerospace grade Carbon Kevlar. The QRT-K was specifically designed for a larger driver and it can fit a 36” waist (pants size) driver. The QRT-K is unique because it was designed to fit a larger driver but has excellent fitment into smaller cockpits. The QRT-K requires the special QRT Side mounts (#600QRT) which allows the seat to be raked back for a comfortable ergonomic seating position. The QRT-K is FIA 8855-1999 approved. Sparco QRT-K Carbon Kevlar Racing Seat Size Large fits up to a 36” waist (pants size) What Is Sparco QRT? Designed and developed at the Sparco OEM Composite Laboratory in Italy, QRT is a patented state-of-the-art technical process, based on aerospace technologies to produce maximum strength with minimum weight. QRT creates an unparalleled mechanical strength-to-weight ratio. This innovative production method generates the lightest fiberglass composite seat shells currently on the market; in fact, it guarantees a reduction in total weight of up to 30% compared to traditional production methods. The QRT seats approach the weight of a comparable carbon fiber seat at a lower price point. Sparco QRT-K Carbon Kevlar Racing Seat Technology Ultralight Carbon Kevlar Composite Shell - 13.5lbs including cover and padding Visible carbon kevlar weave Excellent fitment into small cockpits Large size driver fitment Excellent ergonomics Fire retardant fabric Special non-slip fabric FIA 8855-1999 approved Dimensions

Mercedes S63/65, CL63/65 Front Rotors (Girodisc A1-170) The Girodisc Front Rotor set for Mercedes S63/65 and CL63/65 offers a high-performance, lightweight upgrade that installs directly in place of the factory rotors. With a focus on reduced unsprung mass and improved cooling, these rotors enhance braking consistency and response without altering factory brake bias or requiring modifications to the calipers. Vehicle Fitment This Girodisc front rotor set fits the following Mercedes-Benz AMG models: Mercedes-Benz S63 AMG (W221, W222) Mercedes-Benz S65 AMG (W221, W222) Mercedes-Benz CL63 AMG (C216) Mercedes-Benz CL65 AMG (C216) Compatible with factory calipers and ABS systems. Designed as a direct replacement for OEM iron or carbon-ceramic front rotors. Precision-Machined Two-Piece Design The central hat section is made from U.S.-sourced 6061-T6 aircraft-grade aluminum for maximum strength and minimum weight. The disc is Girodisc’s proprietary cast iron, poured and machined in the USA. Curved internal vanes act as a centrifugal pump, forcing air through the rotor for optimal heat dissipation during high-load braking. Features - Direct replacement for OEM front discs; no modifications required. - Two-piece floating construction significantly reduces unsprung and rotational weight. - Proprietary cast iron rings with 6061-T6 aluminum hats for high thermal stability and rigidity. - Curved vane design maximizes cooling airflow and reduces fade under track or heavy street use. - Floating mount system with 12 high-strength alloy steel drive pins allows precise axial and radial float. - Anti-noise spring washers minimize rattle while maintaining the full floating function under heat expansion. - Cadmium-plated hardware and class 12.9 cap screws ensure long-term corrosion resistance and reliability. - Designed, cast, and machined in the USA to exacting motorsport standards. Specifications Rotor Type: Two-piece floatingMaterial: Proprietary cast iron with 6061-T6 aluminum hatHardware: 12 alloy steel drive pins with spring washersFitment: Mercedes-Benz S63, S65, CL63, CL65 AMG modelsInstallation: Direct bolt-on with OEM calipersSold as: Pair (left and right front rotors) FAQs: Mercedes S63/65, CL63/65 Front Rotors (Girodisc) Do these rotors require any modification to the braking system? No, they are direct bolt-on replacements for the OEM front rotors and retain full compatibility with the factory calipers and ABS system. Are these rotors quieter than typical floating race rotors? Yes. The spring washer hardware minimizes rattle and vibration during normal street use while still allowing for thermal expansion during heavy braking. What benefits will I notice over the stock rotors? You’ll experience sharper brake response, improved cooling, and a noticeable reduction in rotating and unsprung mass. Can I service these rotors? Yes. When the iron rings wear out, they can be replaced independently of the aluminum hats and hardware, keeping maintenance costs lower. Ordering Information Sold and priced per pair. Includes left and right Girodisc front rotors for Mercedes S63/65 and CL63/65 AMG models.

Stilo's Premier Wireless Intercom System The groundbreaking Stilo WL-10 Wireless Intercom System ushers in a new era in rally racing intercom technology with connections a that are completely wireless. This enables communication between your driver and co-driver without the need for cumbersome connection cables. Based on the world's only active digital noise-cancelling intercom -- the acclaimed Stilo DG10 -- the WL-10 Wireless has undergone significant enhancements, placing it at the pinnacle of motorsport communications and the world's first wireless intercom for rallying. The Stilo WL-10 Wireless Intercom System has been fine-tuned to be the best noise-cancelling intercom on the market. Powered directly from the car's 12-volt supply, the standout feature of this intercom is its wireless capability, liberating the driving crew from tethered connections. For enhanced versatility, the intercom features an output for communication with camera systems in Stage mode, as well as an input for radio interfaces (additional equipment required) in Road mode, ensuring seamless integration with team radios. Designed to seamlessly integrate with the latest Stilo helmets, including the WRC Venti and ST5 R WL models, this system represents the forefront of communication technology. The Stilo WL-10 Wireless Intercom System Bundle includes the DG Wireless intercom (AB0520) and two wireless helmet keys (AG0001), pre-paired and ready for immediate use. An optional wireless headset can be added to enhance comfort during road sections.  The Stilo WL-10 gives both driver and co-driver Digital Active Noise Cancelling, adjustable via an easy-to-use DIG button. With four distinct noise-canceling levels, each member can tailor their experience to suit individual preferences, augmented by independent volume controls. Switching between Road and Stage modes facilitates seamless integration with Bluetooth-enabled phones for hands-free calls during transit, while ensuring uninterrupted communication during stages. WL-KEY Wireless Helmet Keys AG0001 Each WL-KEY wireless helmet key and headset has its own battery. With battery life of up to 5 hours on a full charge, the wireless helmet keys and headsets offer ample talk time and convenient USB charging. The addition of helmet logos on the intercom's user interface simplifies wireless key management and connection status monitoring. Each wireless helmet key provides a range of up to 10 meters, enabling crew members to converse even when outside the vehicle. These keys have been designed to plug directly into the Stilo Venti WRC, Venti Trophy Plus, and Stilo ST5R WL helmets.

Dodge Viper ACR Front Iron Rotor Conversion (Girodisc A1-165) The Girodisc Front Iron Rotor Conversion for the Dodge Viper ACR provides a high-performance, serviceable alternative to the factory carbon-ceramic rotors. Designed as a direct bolt-on replacement, this system maintains OEM caliper compatibility and factory brake balance while improving heat tolerance, reducing maintenance costs, and offering long-term durability. Vehicle Fitment This Girodisc front rotor conversion kit fits the following models: Dodge Viper ACR (2015–2017) Dodge Viper TA and GTS models equipped with OEM carbon-ceramic front rotors Designed for factory calipers and hubs with no modifications required. Performance and Design To maintain optimal weight and performance, the Girodisc system uses a pad annulus (swept area) of 66mm or less, requiring the use of brake pads with the FMSI #1405 pad shape. This ensures ideal mass and thermal characteristics without adding unnecessary weight. The two-piece floating rotor design features a lightweight 6061-T6 aluminum hat and a proprietary cast iron rotor ring, both machined in the USA for superior precision and performance. The curved vane internal structure acts as a centrifugal pump, forcing cooling air through the disc to minimize fade during sustained high-speed braking. Features - Direct replacement for OEM carbon-ceramic rotors; bolts on with no modifications. - Requires FMSI #1405 pad shape (available in multiple compounds). - Two-piece floating design with a 6061-T6 aluminum hat and proprietary cast iron friction ring. - Curved vane internal design increases airflow for exceptional heat dissipation and stability. - Floating mount system with 12 high-strength alloy steel drive pins for controlled axial and radial float. - Anti-noise spring washers eliminate rattle while allowing full thermal expansion of the rotor under load. - Cadmium-plated hardware and class 12.9 cap screws ensure long-term corrosion resistance. - Fully machined and assembled in the USA to Girodisc motorsport standards. Specifications Rotor Type: Two-piece floating iron rotor conversionPad Shape: FMSI #1405 (annulus ≤ 66mm)Material: Proprietary cast iron with 6061-T6 aluminum hatHardware: 12 alloy steel drive pins with anti-noise spring washersFitment: Dodge Viper ACR, TA, and GTS with OEM CCM rotorsInstallation: Direct bolt-onSold as: Pair (left and right front rotors) FAQs: Dodge Viper ACR Front Iron Rotor Conversion (Girodisc) Why is a different pad shape required? To maintain ideal mass and temperature control, these rotors use a 66mm swept area. The correct pad shape is FMSI #1405, which Girodisc offers in several compounds. Can I use my stock carbon-ceramic pads? No. The OEM CCM pad annulus is too large for this conversion. Use only the specified FMSI #1405 pad shape. Are these rotors quieter than typical race-style floating rotors? Yes. The floating pins are mounted with anti-noise spring washers that eliminate rattle during street use while maintaining full float under heavy braking. What are the main advantages of switching to iron rotors? Improved thermal durability, easier serviceability, and significantly lower replacement costs compared to carbon-ceramic rotors. Can I reuse the aluminum hats when replacing the rings? Yes. Only the cast iron friction rings need to be replaced once worn, allowing cost-effective maintenance. Ordering Information Sold and priced per pair. Includes left and right Girodisc front iron rotors for Dodge Viper ACR, TA, and GTS models with carbon-ceramic front brakes. Requires FMSI #1405 pad shape for installation.

Lamborghini Murciélago ('05+) Front Rotors Upgrade your Lamborghini Murciélago’s braking system with Girodisc 380mm 2-piece floating rotors—designed to outperform the stock setup while retaining perfect compatibility with your OEM calipers. These larger rotors (380mm vs. 365mm factory) come with precision-machined caliper spacers, delivering greater stopping torque, improved heat capacity, and reduced fade under high-performance conditions. Each Girodisc rotor is precision-built in the USA using a 6061-T6 aluminum hat mated to Girodisc’s proprietary high-carbon cast-iron rotor rings. The curved vane design acts as a centrifugal air pump, pulling cool air through the disc to keep temperatures stable even during repeated heavy braking. This design enhances brake response and ensures fade-free stopping power whether on the street or track. Big Power Deserves Big Brakes Vehicle Fitment Lamborghini Murciélago (2005 and newer models) Includes required caliper spacers for proper fitment Girodisc A1-097 Features Direct-fit upgrade: Works with OEM calipers using included spacers—no permanent modifications required. 380mm diameter rotors: Provide stronger braking force and improved heat management compared to OEM 365mm discs. Lightweight 2-piece construction: Weighs approximately 24.5 lbs each, reducing unsprung mass for faster suspension response. Curved vane ventilation: Pumps cooling air through the rotor to combat heat buildup and prevent fade. Floating mount system: Allows for thermal expansion without warping while maintaining consistent pad contact. Made in the USA: Designed, cast, and machined in-house by Girodisc for unmatched precision and performance. Girodisc A1-097 FAQs Do these rotors fit OEM Murciélago calipers? Yes. They include caliper spacers to ensure perfect fitment with the factory brake setup. How much larger are they than stock? These rotors measure 380mm versus the factory 365mm units for added braking power and heat capacity. Are they lighter than OEM rotors? Yes. Each Girodisc rotor weighs roughly 2.5 lbs less, improving handling and responsiveness. Are these rotors noisy? No. Girodisc’s anti-noise spring washers allow float without the typical rattle of race-style rotors. How are they sold? Sold and priced per pair. Unleash the full braking potential of your Lamborghini Murciélago with Girodisc 380mm front rotors—crafted for precision, cooling efficiency, and uncompromised performance.

Lamborghini Murciélago Front Rotors Upgrade your Lamborghini Murciélago’s braking system with Girodisc 2-piece floating front rotors—precision-engineered to replace the OEM discs while maintaining perfect compatibility with your factory calipers. Designed for both street and track use, these rotors enhance cooling efficiency, reduce unsprung weight, and deliver sharper pedal response without compromising factory balance or ABS function. Each rotor features a 6061-T6 aluminum hat mated to Girodisc’s proprietary cast-iron rotor rings, both machined and assembled in-house in the USA. The 355mm rotors use a curved vane design that acts as a centrifugal pump, continuously drawing cool air through the disc to keep temperatures under control even during extended high-performance driving. Precision-Engineered Stopping Power for Your Murciélago Vehicle Fitment Lamborghini Murciélago (2002–2004) Designed for use with OEM front calipers Girodisc A1-098 Features Direct OEM replacement: Installs using factory calipers and hardware—no modifications required. 355mm diameter design: Provides improved brake torque and heat dissipation over stock rotors. Lightweight 2-piece construction: Approximately 24.5 lbs each vs. 27 lbs OEM for reduced unsprung mass. Curved vane ventilation: Internal vanes channel cooling air through the disc to reduce fade. Floating mount system: Allows for thermal expansion without distortion, maintaining even pad wear. Anti-noise hardware: Spring washers eliminate rattle while preserving proper float. Made in the USA: Fully cast, machined, and assembled domestically by Girodisc. Girodisc A1-098 FAQs Do these rotors fit the OEM Murciélago calipers? Yes. They bolt directly to the stock calipers without any modification. Are they lighter than the factory rotors? Yes. Each Girodisc rotor is about 2.5 lbs lighter, reducing unsprung and rotational mass. Do they improve braking performance? Absolutely. Expect better cooling, quicker heat recovery, and improved modulation under hard braking. Are these rotors suitable for street use? Yes. They perform flawlessly for both street driving and track conditions. How are they sold? Sold and priced per pair. Upgrade your Murciélago’s braking precision with Girodisc 355mm front rotors—built to handle supercar performance with unmatched control and reliability.

Paragon Viking Extreme Max 110V Team Cooler Paragon’s 61L Viking Extreme Max multi-person 110V cooler is an absolutely amazing multi-person cooling option for racers with access to 110-volt power. In fact, keeping cool with the Viking Extreme Max is so fantastic on those sweltering afternoons in the paddock or pits, we would get a generator just to plug in an Extreme Max cooler. The 61L capacity Paragon Viking Extreme Max cooler is built in the USA to be durable enough to stand up to race weekends, and ultra-efficient with its 110-volt fluid pump providing strong, constant circulation of chilled water through several Paragon cooling garments at the same time. This large-capacity cooler works exclusively with Paragon cooling garments. American Made Race Team Cooling Perfection The American-made Paragon Viking Extreme Max Cooler keeps you and your team cool, comfortable, and alert so everyone can perform at their best in the heat of competition. Heat fatigue is a big factor in loss of focus and concentration. Now everyone can stay cool waiting in the pits for each fuel stop or driver change. Paragon Viking Extreme Max Cooler Details Manufacturer: Paragon Manufacturer part no.: 80-23100 Cooler capacity: 61 liters Operating voltage: 110V Dimensions (external): 30.5"L x 17.25"W x 17"H Weight (dry): 34 lbs Cooling garment connections: 6 outlets/inlets

Bell RS7 Carbon Fiber SA2025 Racing Helmet This is a pre-order, shipping after Q3 2025. The Bell RS7 Carbon Fiber SA2025 takes its design straight from the flagship Bell HP7, delivering pro-level performance at a more accessible price point. Built with Bell’s proprietary high-pressure molding process, this ultra-light carbon fiber helmet offers maximum strength, acoustic comfort, and aerodynamic efficiency. With 14 intake and exhaust channels, the RS7 ensures cool air flows in while hot air is pushed out, keeping you focused on the race. A hollow rubber gasket keeps air, water, and dust out, making it the perfect choice for demanding track environments. Bell RS7 Carbon Fiber Helmet Details Manufacturer: Bell Helmets Manufacturer Part Number: 1204A Homologation: Snell SA2025 Sizes: 54cm to 61+cm Interior: Grey Comfort-Max FR® moisture-wicking fabric Shield: Clear SE07 3mm DSAF shield with anti-fog insert Included: M6 HNR terminals and hex wrench Notable Features 14 intake and exhaust channels provide maximum ventilation Multi-piece, multi-density liner for superior impact absorption at all speeds Aerodynamic stability at high speeds with optional chin bar, top Gurneys, and rear spoiler Optional top forced-air kits available: eyeport, 8-hole, and 10-hole configurations Integrated channels support drink tube and radio communication systems Pro-style foam interior with contoured cheek pads for a custom race fit Narrow eye port for reduced glare and enhanced safety in open-track conditions What’s In The Box Bell RS7 Carbon Fiber SA2025 helmet Clear SE07 3mm DSAF shield (installed) M6 HNR terminals Hex wrench key Bell RS7 Carbon Fiber Helmet FAQs Is the Bell RS7 Carbon Fiber helmet Snell approved? Yes, it carries the Snell SA2025 homologation, making it legal for track days, club racing, and sanctioned events across North America. What makes the RS7 different from the Bell HP7? The RS7 uses the same design as the HP7 but is homologated to Snell SA2025 instead of FIA 8860. It delivers top-level performance at a more affordable price point. Can this helmet integrate with a drink tube and comms system? Yes, the RS7 has built-in channels for hydration and radio communication systems, ideal for endurance or pro-level racing. Does the RS7 come with forced-air capability? The helmet includes top forced-air intake inserts that can be customized with optional eyeport, 8-hole, or 10-hole kits for external cooling systems. Step up to the Bell RS7 Carbon Fiber SA2025 Helmet and experience lightweight strength, pro-level aerodynamics, and advanced ventilation designed for serious racers.

Sparco Eagle LTD Driver Race Suit The Eagle LTD is newest evolution of the Eagle race suit. The new Eagle LTD race suit features an updated, softer HOCOTEX® material which is 30% thinner. The Eagle LTD features an all-new design with four new colorways. The Eagle LTD race suit carries the newest FIA homologation. Single-Layer Construction, Multi-Layer Performance The Eagle LTD is the latest iteration of the Eagle fabric and the result of over 3 years of R&D. Sparco has patented a new technology called HOCOTEX® which revolutionizes the way racing suits are made. This new exclusive Sparco technology creates a single layer fabric which has the protection of what is normally achieved by a multi-layer fabric. The Eagle LTD is FIA 8856-2018 homologated. Unprecedented Comfort Thanks to HOCOTEX®, the Eagle LTD is three times more breathable than a suit produced using traditional technology. The use of this relatively thinner fabric along with large side and back stretch panels and 360 degree arm gussets give the Eagle LTD ultimate flexibility and comfort. The Eagle LTD uses at new stretch material called Eagle fabric, which is lighter, more breathable, and more abrasion resistant than traditional stretch material. Improved Fire & Heat Resistance Traditional racing suits have layers of fabric sewn together in a quilted pattern. The quilting provides air space between the layers which bloats in a fire, this provides thermal protection to the driver. HOCOTEX® creates a honeycomb structure with internal air cells that ensure the driver even more fire protection. Traditional box quilting creates an average of 300 air chambers in a size 52 suit. The Eagle LTD has over 60,000 microcell air chambers which provide a 10 to 12% increase in heat protection performance. Sparco Eagle LTD Driver Race Suit Details: Single layer construction, multi-layer protection 3X more breathable than a standard suit with full 360o arm gussets Large stretch panels on sides and back with new breathable fabric Reinforced arms and legs with anti-abrasive material Three years of research and development HOCOTEX® patented Sparco Technology made in Italy Available in four colorways FIA 8856-2018 homologated