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A1-282 Girodisc 380mm Front Rotors Price: $810.00 These Girodisc A1-282 2-piece front rotors are a direct bolt-on for the G87 M2, G80/G81 M3, and G82/G83 M4 without carbon ceramic brakes. Fully floating construction reduces unsprung/rotational mass while improving cooling, and they retain the factory calipers, ABS logic, and brake bias. Vehicle Fitment BMW G87 M2 (non-CCB) – Front BMW G80/G81 M3 (non-CCB) – Front BMW G82/G83 M4 (non-CCB) – Front High-Carbon Rings, 72 Curved Vanes The rotor rings are machined from high-carbon iron to Girodisc specifications. 72 curved vanes act as a centrifugal pump, drawing air through the hub for efficient heat rejection during repeated hard stops. The 2-piece design allows you to reuse the aluminum hats and refresh with D1-282 rings later. Features Direct OE replacement for 380 mm front rotors (non-CCB) 2-piece floating design reduces unsprung weight High-carbon iron rings; reusable 6061-T6 aluminum hats 72 curved vanes for strong airflow and cooling Assembled with cadmium-plated pins, spring clips, Belleville washers Manufactured and assembled in Bellingham, WA Sold/priced per pair A1-282 FAQs Minimum service thickness? Replace when rings reach 34 mm or sooner if a crack reaches the edge. Do I need new calipers or brackets? No — bolts to factory hubs and works with OE calipers. Which replacement rings match? D1-282 (380×34) front replacement rings. Pad compatibility? Works with OE-shape pads and performance compounds; bed per pad manufacturer. Related Products D1-282 Girodisc BMW G8X 380mm Front Replacement Rings A2-282 Girodisc BMW G8X M2, M3, M4 370mm Rear Rotors D2-282 Girodisc BMW G8X 370mm Rear Replacement Rings

A1-322 Girodisc BMW G8X M3, M4 Front Iron Rotor Conversion Price: $1,450.00 These Girodisc A1-322 2-piece rotors directly replace the 400 mm carbon-ceramic (CCB) front rotors on the BMW G8X M3 & M4. The fully floating design reuses the factory CCB calipers and requires no permanent modifications—just swap rotors and run the factory iron pad shape for the calipers. Vehicle Fitment BMW G80/G81 M3 with CCB – Front BMW G82/G83 M4 with CCB – Front 400 mm Iron, Built to Run Cool High-carbon iron rings with curved internal vanes pull cooling air through the disc for stable performance under repeated hard stops. Reusable 6061-T6 aluminum hats and cadmium-plated hardware control thermal growth and keep noise down in street use. Features Direct CCB-to-iron conversion; no coding or bracket changes 2-piece floating construction reduces unsprung/rotational mass Curved-vane rings for strong airflow and heat rejection Reusable aluminum hats; new hardware included Manufactured and assembled in Bellingham, WA Sold/priced per pair A1-322 FAQs Do I change calipers? No. These rotors are designed to run with the OEM CCB calipers. Which pads do I use? Use the factory iron pad shape for the G8X CCB calipers (not the carbon-ceramic pads). Any coding needed? No — critical dimensions match CCB spec, so ABS/DSC calibration remains correct. Wheel clearance vs. CCB? Rotor envelope matches the 400 mm CCB setup, so wheel clearance is unchanged. Front replacement ring part number? D1-220 400 mm front rings. Related Products D1-220 Girodisc BMW F8X/G8X 400mm Front Replacement Rings A2-322 Girodisc BMW G8X M3, M4 Rear Iron Rotor Conversion D2-322 Girodisc BMW G8X Iron Conversion Rear Replacement Rings

Girodisc Cadillac CT4-V Blackwing Front Rotors These Girodisc A1-318 2-piece front rotors are a direct bolt-on for the Cadillac CT4-V Blackwing. The fully floating assemblies reduce unsprung weight and improve thermal management while retaining OEM calipers, ABS logic, and brake bias. Vehicle Fitment Cadillac CT4-V Blackwing – Front High-Carbon Rings with Curved Vanes Proprietary high-carbon iron rings use curved internal vanes to draw cooling air through the disc. Reusable 6061-T6 aluminum hats and cadmium-plated high-strength drive pins control thermal growth and deliver quiet street manners with race-ready float. A1-318 Girodisc Cadillac CT4-V Blackwing Front Rotors Features Direct OE replacement; no modifications required 2-piece floating design reduces unsprung/rotational mass Curved vane internal geometry for strong airflow and cooling Reusable aluminum hats; hardware engineered for quiet operation Manufactured and assembled in Bellingham, WA Sold/priced per pair A1-318 Girodisc Cadillac CT4-V Blackwing Front Rotors FAQs Do these change pedal feel or ABS? No — rotor geometry preserves factory brake balance and ABS calibration. Which replacement rings match the A1-318? Use D1-066 380×34 mm front replacement rings. Are OEM pads compatible? Yes — works with OEM and performance pad compounds; follow pad manufacturer bedding. Track suitability? Yes — high-carbon metallurgy and floating hardware are designed for repeated high-heat cycles. Related Products D1-066 Girodisc 380×34 Front Replacement Rings A2-318 Girodisc Cadillac CT4-V Blackwing Rear Rotors D2-318 Girodisc Cadillac CT4-V Blackwing Rear Replacement Rings

A1-308 Girodisc Mercedes 360mm Front Rotors These Girodisc A1-308 2-piece slotted front rotors are a direct OEM replacement for 360 mm front discs on select Mercedes-AMG models. Bolt-on fit with stock calipers; no modifications required. Vehicle Fitment Mercedes-Benz E63 AMG (W212) 2010–2014 – Front (360 mm) Design & Performance High-carbon iron rings with 48 curved internal vanes draw cooling air through the rotor. Floating two-piece construction reduces unsprung weight while reusable aluminum hats allow ring-only replacement. Features Direct OEM replacement (360 mm) for listed AMG applications 2-piece floating rotor reduces unsprung weight vs. OE Slotted face improves pad refresh and debris evacuation High-carbon iron rings; reusable 6061‑T6 aluminum hats Approx. 23.6 lb per rotor vs. ~34.5 lb OE (application dependent) Manufactured and assembled in Bellingham, WA A1-308 Girodisc Mercedes 360mm Front Rotors FAQs: Do these rotors require new calipers or brackets? No. They bolt to the factory hubs and work with OEM calipers and pads on the listed applications. Are they directional? Yes. Each rotor has directional internal vanes; install left/right as marked to ensure proper airflow. What pads are recommended? They are compatible with OEM pads and popular street/track compounds (e.g., Ferodo DS1.11, Pagid, Hawk). Bed-in per the pad manufacturer. How do they compare to OE one-piece discs? Lower rotating mass and better heat rejection reduce fade and can improve response on track. Related Products A1-308 Girodisc Mercedes 360mm Front Rotors A2-148 Girodisc Mercedes 360mm Rear Rotors D1-308 Girodisc Mercedes 360mm Front Replacement Rings D2-123 Girodisc Mercedes 360mm Rear Replacement Rings

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.

A1-127 Girodisc Two-Piece 380mm Front Brake Rotors (Discontinued Design) FITMENT: Porsche 997.1 GT2/GT3 (2007-2011) w/ OEM PCCB Discontinued New old stock rotor.  These have the straight grooves as images show, not the new curved grooves.  Final Sale, no returns or exchanges. This Girodisc system is a direct 380mm replacement for the OEM front rotors on the Porsche 997.1 GT3/GT2 with OEM PCCB brakes. No modifications are necessary, allows use of factory unmodified pads unlike most aftermarket solutions for this application. The Girodisc rotors will bolt directly to the car and work with OEM calipers perfectly. By upgrading your brakes with lightweight, high performance replacements (as opposed to a big brake kit), your factory bias is maintained as well as your ABS efficiency. 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.

Girodisc Porsche 992 GT3 Front Replacement Rings Refresh your Porsche’s braking power with Girodisc D1-272 front replacement rings. Designed as direct replacements for Girodisc two-piece rotors, these precision-engineered 408mm rings restore peak performance and cooling efficiency, ensuring consistent brake feel and reduced fade during aggressive driving or track use. Vehicle Fitment Compatible with:• 2022–2025 Porsche 911 GT3 (992)• 2023–2025 Porsche 911 GT3 Touring (992)• 2023–2025 Porsche 718 Cayman GT4 RS• 2023–2025 Porsche 718 Spyder RSNote: These are friction rings only. They attach to existing Girodisc aluminum hats using the supplied floating hardware kit. Race-Proven Engineering and Cooling Efficiency Girodisc rotor rings are cast in the USA from a proprietary high-carbon iron alloy designed to withstand extreme heat and repeated high-speed stops. The 72 curved internal vanes act as centrifugal pumps, pulling cool air through the disc to regulate temperature and resist fade. These rings deliver precise pedal modulation and exceptional longevity on both road and track. Features • Direct replacements for Girodisc 408mm front rotors• Fits Porsche 992 GT3, GT3 Touring, GT4 RS, and Spyder RS• High-carbon cast iron construction for superior durability• Directional curved vane design for maximum cooling• Fully machined, balanced, and finished in the USA• Includes new floating hardware kit• Sold/priced per pair Specifications • Diameter: 408mm• Position: Front• Material: High-carbon cast iron• Includes: Two rotor rings and full hardware kit• Made in the USA• Sold/priced per pair Girodisc D1-272 Replacement Ring FAQs Are these compatible with OEM Porsche rotors? No. These replacement rings are designed exclusively for Girodisc two-piece rotor systems and will not fit OEM or PCCB assemblies. Do they include new hardware? Yes. Each set comes complete with floating drive pins, washers, and bolts for secure, straightforward installation. Are they suitable for track use? Absolutely. Girodisc rotors are engineered for endurance racing, offering consistent brake feel even under prolonged high temperatures. When should I replace the rings? Replace them once they reach minimum thickness or if surface cracking extends to the edge of the disc. Rebuild your Porsche’s braking system with Girodisc D1-272 front replacement rings — precision-built, track-proven, and proudly made in the USA.

Performance Friction PFC 380.34.0062.451/461 380mm Front Floating Racing Brake Rotor Replacements Fit The Following Cars (w/ OEM Iron Rotors) - Center hat Excluded, rotor disc only. Replacement Disc Only For PFC 380.070.63/64 Porsche 991 GT3 (Front) Porsche 991 GT3RS (Front) Porsche 981 GT4 (Front) PFC the manufacturer of Porsche Cup braking systems developed a 380x34mm front rotor replacement kit that is a direct replacement for the OEM Iron Brake rotors.  Performance Friction PFC V3 Discs with Zero Failure Technology Unique Rotor and Hat interface, eliminating most hardware. The elimination of hardware reduces weight, complexity, and installation time for less down time and more seat time on the track.  Replace your rotor discs in minutes with a flat head screwdriver PFC metallurgy specified for high Thermal stability and mechanical strength for increased longevity 48 vane geometry engineered for increased airflow for increased brake cooling during the heat of the battle while on track Patented slot pattern for increased initial bit and pad surface conditioning Lightweight forged hard anodized aluminum hat for increased durability and performance The two-piece PFC V3 design allows for disc-only replacement as well, minimizing future replacement costs and delivering outstanding performance. Sold/priced per pair.

Performance Friction PFC 410.069.63-64 410mm Two-Piece Front Floating Racing Brake Rotors Fit The Following Cars (w/ OEM Iron Rotors or PCCB Rotors) Porsche 991 GT2RS PCCB (Front) Porsche 991 GT3 PCCB (Front) Porsche 991 GT3RS PCCB (Front) Porsche 718 / 982 GT4RS PCCB or Iron (Front) Porsche 718 GT4 PCCB (Front) PFC the manufacturer of Porsche Cup braking systems developed a 410mm front rotor replacement kit that is a direct replacement for the OEM 991 GT or 718 GT4 PCCB Brake rotors or OEM 718 / 982 GT4RS with PCCB or Iron rotors.  Performance Friction PFC V3 Disks with Zero Failure Technology Unique Rotor and Hat interface, eliminating most hardware. The elimination of hardware reduces weight, complexity, and installation time for less down time and more seat time on the track.  Replace your rotor discs in minutes with a flat head screwdriver PFC metallurgy specified for high Thermal stability and mechanical strength for increased longevity 48 vane geometry engineered for increased airflow for increased brake cooling during the heat of the battle while on track Patented slot pattern for increased initial bit and pad surface conditioning Lightweight forged hard anodized aluminum hat for increased durability and performance The two-piece PFC V3 design allows for disc-only replacement as well, minimizing future replacement costs and delivering outstanding performance. Sold/priced per pair.

Girodisc Toyota GR Corolla, GR Yaris Front Replacement Rings Maintain the high-performance braking feel of your Toyota GR Corolla or GR Yaris with Girodisc D1-268 355mm front replacement rings. Designed as direct replacements for Girodisc two-piece rotors, these precision-machined rings bolt directly to your existing Girodisc aluminum hats using the included floating hardware kit. Refresh your rotor surface while retaining your lightweight two-piece design and factory braking balance. Vehicle Fitment Compatible with:• Toyota GR Corolla (2023+)• Toyota GR Yaris (2020+)Note: Designed exclusively for Girodisc 355mm two-piece front rotor systems. Not compatible with OEM one-piece rotors or factory carbon-ceramic setups. Features • Sold as a left/right pair with full floating hardware kit• Direct replacements for Girodisc 355mm two-piece front rotors• High-carbon cast iron ensures superior heat management• Directional curved vanes increase cooling efficiency• Maintains OEM brake bias and ABS performance• Precision machined and balanced in the USA• Designed exclusively for Girodisc aluminum hats Specifications • Diameter: 355mm• Position: Front• Material: High-carbon cast iron• Mount type: Floating two-piece system• Includes: Two rings and new hardware kit• Sold/priced per pair Girodisc D1-268 Toyota GR Corolla / GR Yaris Front Replacement Ring FAQs Do these fit factory Toyota rotor hats? No. The D1-268 rings are engineered only for Girodisc aluminum hats and are not compatible with OEM rotors. Are these suitable for heavy track use? Yes. Girodisc’s floating mount and high-carbon alloy resist cracking and warping under the extreme heat generated during performance driving. Can I use these with stock GR calipers? Yes. They fit perfectly with the OEM caliper configuration when used with Girodisc hats. What’s the benefit of replacing just the rings? You save cost by retaining your Girodisc hats while restoring full braking performance and reducing unsprung weight. Refresh your GR’s stopping power with Girodisc D1-268 355mm front replacement rings — precision-built for thermal control, responsiveness, and consistent braking on both road and circuit.

A1-319 Girodisc Corvette C8 Z06 Front Brake Rotors The Girodisc A1-319 2-piece front rotors are a direct replacement for the factory front rotors on the Corvette C8 Z06 equipped with standard iron brakes (non-Z07 package). These fully floating, 2-piece assemblies reduce unsprung weight and rotating mass, improving both braking performance and handling response. Vehicle Fitment 2023+ Chevrolet Corvette C8 Z06 (without Z07 carbon ceramic brake package) Direct replacement for OEM front iron rotors Race-Bred Cooling & Construction The rotor rings are machined from proprietary high-carbon iron for durability and heat resistance. Seventy-two curved internal vanes act as a centrifugal pump, drawing air through the hub to keep brake temperatures in check during hard use. The 2-piece floating design uses a lightweight 6061-T6 aluminum hat, allowing easy replacement of the rings (D1-147) when needed. Features Direct replacement for factory iron front rotors 2-piece floating rotor assemblies reduce unsprung weight 72 curved vane design for superior cooling High-carbon iron rings with reusable aluminum hats Manufactured and assembled in Bellingham, WA Minimum recommended ring thickness: 32 mm A1-319 Girodisc Corvette C8 Z06 Front Brake Rotors FAQs: Will these fit cars with the Z07 package? No. These rotors are for Z06 models with standard iron brakes, not the Z07 carbon-ceramic option. Do these work with OEM calipers? Yes. They bolt directly to the factory hubs and calipers with no modifications. Do I need special pads? No. These are compatible with OEM and performance street or track pads. What’s the service life? Replace rings at or below 32 mm thickness or if cracks propagate to the edge under inspection. Are they directional? Yes. Each rotor is side-specific with directional curved vanes for optimal airflow. Related Products A2-319 Girodisc Corvette C8 Z06 Rear Brake Rotors D1-147 Girodisc Front Replacement Rings D2-319 Girodisc Corvette C8 Z06 Rear Replacement Rings

D1-220 Girodisc BMW F8X, G8X 400mm Front Replacement Rings Upgrade the stopping power of your BMW M car with Girodisc D1-220 400mm 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 outstanding heat management, fade resistance, and consistent braking response for street, track, or competition use. Vehicle Fitment Compatible with:• BMW F80 M3 / F82 M4 / F83 M4 Convertible (front)• BMW G80 M3 / G82 M4 / G87 M2 (front)Note: Designed exclusively for Girodisc 400mm two-piece front rotor systems. Not compatible with OEM one-piece or carbon-ceramic rotors. Features • Sold as a left/right pair with complete floating hardware kit• Direct replacements for Girodisc 400mm two-piece front rotors• CNC-machined from high-carbon cast iron for superior heat capacity• Directional curved vanes improve airflow and cooling• Maintains factory brake bias and ABS calibration• Precision-balanced and track-ready• Designed exclusively for Girodisc aluminum hats – not compatible with OEM or other brands Specifications • Diameter: 400mm• Position: Front• Material: High-carbon cast iron• Mount type: Floating two-piece system• Includes: Two rotor rings and new hardware kit• Sold/priced per pair Girodisc D1-220 BMW Front Replacement Ring FAQs Can I use these with BMW’s carbon-ceramic brake package? No. These are for Girodisc steel rotor conversions only and will not fit OEM carbon-ceramic hats. Do these work with factory M compound calipers? Yes. The D1-220 rings maintain exact rotor offset and diameter to work perfectly with OEM four- and six-piston M calipers. Are they quieter than stock rotors? Yes. The Girodisc floating design allows better heat expansion control, reducing cracking noise and vibration over time. What are the advantages over BMW’s OEM rotors? Girodisc rotors are lighter, rebuildable, and deliver superior thermal consistency — ideal for repeated hard stops at the track. Enhance your BMW M’s braking performance with Girodisc D1-220 400mm front replacement rings — the ultimate upgrade for precision, endurance, and smooth braking under pressure.

Porsche 991 GT3 Cup Front Rotors (380x32) The Girodisc system is a direct replacement for the OE front rotors on the Porsche 991 GT3 Cup car. No modifications are required—these lightweight 2-piece floating rotors bolt directly to the car and work seamlessly with factory calipers. Designed for the demands of professional motorsport, Girodisc rotors deliver superior cooling, durability, and braking precision under the harshest track conditions. Built for Competition-Level Performance Girodisc 380x32mm rotors are engineered and machined entirely in the USA from the highest-quality materials. The aluminum hat is CNC-machined from 6061-T6 aircraft-grade alloy for weight savings and strength. The iron rotor rings are made from Girodisc’s proprietary high-carbon alloy, poured and machined in-house for exacting balance and heat resistance. The curved vane design acts as a centrifugal pump, drawing air through the disc to reduce fade and maintain consistent braking throughout long races. A1-238 Girodisc 380mm 2pc Front Brake Rotor Vehicle Fitment Porsche 911 GT3 Cup (991.1 & 991.2) Porsche 911 GT3 R (for equivalent front setup) A1-238 Girodisc 380mm 2pc Front Brake Rotor Features Direct OEM Replacement: Bolts directly to factory hubs and calipers—no modifications needed. 380x32mm Rotor Size: Provides greater surface area and heat capacity for endurance-level braking. Lightweight Two-Piece Design: Reduces unsprung and rotational mass to improve cornering response and acceleration. Curved Vane Internal Cooling: Directional vanes act as centrifugal pumps, pulling cool air through the disc to reduce temperatures and extend pad life. Floating Mount System: Twelve high-strength alloy drive pins with anti-noise spring washers allow the rotor to expand under heat while preventing rattle. Replaceable Rings: The aluminum hats are reusable—only replace the iron rings when worn. Made in the USA: Designed, cast, machined, and assembled domestically to the highest racing standards. A1-238 Girodisc 380mm 2pc Front Brake Rotor FAQs Do these rotors fit OEM calipers? Yes, they fit directly with the factory Porsche Motorsport calipers. Can they handle endurance racing? Absolutely. Girodisc rotors are built to survive repeated high-temperature cycles during endurance and sprint events. What makes Girodisc better than OEM? They offer reduced weight, better cooling, and replaceable rotor rings, saving long-term maintenance costs. Are they sold as a pair? Yes, Girodisc rotors are sold and priced per pair. Enhance your Porsche 991 GT3 Cup’s braking performance with Girodisc’s 380x32mm 2-piece floating rotors. Designed for uncompromising race performance, these rotors deliver cooler operation, consistent pedal feel, and lasting durability for the most demanding track conditions.

D1-232 Girodisc Nissan GT-R (2012+) 390mm Front Replacement Rings Bring your R35 GT-R’s braking system back to peak performance with Girodisc D1-232 390mm front replacement rings. These precision-machined components bolt directly to your existing Girodisc aluminum hats using the supplied floating hardware kit. Each ring is cast from Girodisc’s proprietary high-carbon iron alloy, delivering exceptional cooling, consistent friction, and fade-free performance even under intense track conditions. Vehicle Fitment Compatible with:• Nissan GT-R (R35, 2012+, front)• Fits Premium, Black Edition, Track Edition, and NISMO trimsNote: Designed for Girodisc 390mm two-piece front rotor systems only. Not compatible with OEM or aftermarket one-piece rotors. Features • Sold as a left/right pair with complete floating hardware kit• Direct replacements for Girodisc 390mm two-piece front rotors• CNC-machined from high-carbon cast iron for optimal heat dissipation• Directional curved vanes improve airflow and braking consistency• Maintains factory brake bias and ABS calibration• Designed exclusively for Girodisc aluminum hats – not compatible with OEM or other brands Specifications • Diameter: 390mm• Position: Front• Material: High-carbon cast iron• Mount type: Floating two-piece design• Includes: Two rotor rings and new hardware kit• Sold/priced per pair Girodisc D1-232 Nissan GT-R Front Ring FAQs Do these fit OEM GT-R rotor hats? No. These are engineered specifically for Girodisc hats and will not bolt to factory or other aftermarket hats. Are they compatible with factory calipers? Yes. They maintain OEM brake geometry and clearances for the standard Brembo calipers found on all R35 trims. How do these compare to OEM rotors? Girodisc rings are lighter, dissipate heat faster, and reduce the risk of cracking or warping under repeated high-speed stops. Are they track-proven? Absolutely. The D1-232 rings are used on GT-Rs competing in endurance and time-attack racing worldwide, offering unmatched consistency. Upgrade your Nissan GT-R’s braking system with Girodisc D1-232 390mm front replacement rings — precision-engineered for extreme performance, cooling efficiency, and durability on both street and circuit.

D1-067 Girodisc Ford S550 Mustang (w/ Brembo) Front Replacement Rings Optimize your Mustang’s braking performance with Girodisc D1-067 380mm front replacement rings. These precision-machined rotors are direct replacements for Girodisc’s two-piece systems and bolt to your existing aluminum hats using the included floating hardware kit. Built from Girodisc’s proprietary high-carbon cast iron, these rings deliver exceptional heat resistance, fade control, and consistent braking feel during both street and track use. Vehicle Fitment Compatible with:• Ford Mustang GT (S550, 2015–2023) with Performance Pack (Brembo 6-piston front brakes)• Ford Mustang GT350 (2016–2020)• Ford Mustang Mach 1 (2021–2023)Note: Designed exclusively for Girodisc 380mm two-piece front rotor systems. Not compatible with OEM one-piece rotors or carbon-ceramic assemblies. Features • Sold as a left/right pair with complete floating hardware kit• Direct replacements for Girodisc 380mm two-piece front rotors• CNC-machined from high-carbon cast iron for superior durability and heat management• Directional curved vanes increase airflow and cooling efficiency• Maintains OEM brake bias, ABS, and traction control calibration• Precision-balanced to eliminate vibration and ensure smooth braking• Designed exclusively for Girodisc aluminum hats Specifications • Diameter: 380 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 D1-067 Ford S550 Mustang Front Ring FAQs Will these fit OEM Mustang Brembo rotors? No. These replacement rings are designed specifically for Girodisc aluminum hats and cannot mount to OEM one-piece Brembo rotors. What brake pads pair best with these rotors? For street and spirited driving, Ferodo DS2500 pads are excellent. For heavy track use, Pagid RSL29 or Carbotech XP12 deliver superior bite and fade resistance. Are these rotors directional? Yes. Each rotor is labeled for left and right sides. Proper installation ensures the internal vanes draw air through the rotor for maximum cooling under load. What torque should be applied to the hardware bolts? Torque to 12 ft-lbs (16 Nm) using blue Loctite. After one complete heat cycle, recheck torque to ensure proper float and hardware integrity. Upgrade your Mustang’s stopping performance with Girodisc D1-067 380mm front replacement rings — engineered for cooling efficiency, reduced fade, and consistent braking feel lap after lap.

VW / Audi MQB 340mm Front Rotors (Girodisc A1-171) The Girodisc 340mm Front Rotor set for VW and Audi MQB-platform cars delivers a precise, high-performance upgrade over factory rotors without the cost or complexity of a full big brake kit. Each rotor is a direct bolt-on replacement that retains full compatibility with factory calipers and brake bias, while reducing both rotational and unsprung mass for sharper handling and improved acceleration. Precision-Engineered Two-Piece Design Weighing approximately 20.3 lbs each compared to 23.8 lbs for the OEM rotors, this Girodisc system reduces weight exactly where it matters. The central hat is CNC-machined from U.S.-sourced 6061-T6 aircraft-grade aluminum, paired with Girodisc’s proprietary cast iron rotor ring poured and machined entirely in the USA. The rotor’s curved vane internal design acts as a centrifugal pump, forcing cooling air through the rotor to maintain consistent braking under high temperatures. Vehicle Fitment This 340mm Girodisc rotor set fits a wide range of MQB-platform VW and Audi vehicles, including: Volkswagen Golf R (MK7 / MK7.5) Volkswagen GTI Performance Package / Clubsport Volkswagen GTI TCR Audi S3 (8V) Audi TT-S (8S) Audi A3 with 340mm front brakes If you are unsure of compatibility, please verify your vehicle’s factory rotor size before ordering. Features - Direct replacement for OEM 340mm rotors; no adapters or spacers required. - Two-piece floating rotor design reduces unsprung and rotational weight. - Proprietary cast iron friction rings with 6061-T6 aluminum hats for high heat resistance and rigidity. - Curved vane internal design promotes effective cooling airflow. - Floating mount system with ten high-strength alloy steel drive pins allows precise axial and radial float. - Anti-noise spring washers eliminate rattle during street use while maintaining performance under heat expansion. - Cadmium-plated hardware for long-lasting corrosion protection. - Fully manufactured in the USA to motorsport standards. Specifications Rotor Diameter: 340mmWeight: 20.3 lbs (each)OEM Rotor Weight: 23.8 lbs (each)Rotor Type: Two-piece floatingMaterial: Proprietary cast iron with 6061-T6 aluminum hatHardware: 10 alloy steel drive pins with spring washersSold as: Pair (left and right front rotors) FAQs: VW / Audi MQB 340mm Front Rotors (Girodisc) Do these rotors require caliper modifications? No, these are direct bolt-on replacements that retain factory calipers and brake pads. How do these rotors improve braking performance? They reduce rotating mass, improve cooling efficiency, and maintain more consistent braking under high temperature conditions. Are they noisy during normal driving? The anti-noise spring washers prevent rattle and vibration while preserving the floating design benefits during spirited or track use. What maintenance is required? Only the cast iron friction rings need replacement when worn. The aluminum hats and hardware are reusable per Girodisc’s service recommendations. Ordering Information Sold and priced per pair. Includes left and right Girodisc 340mm front rotors for VW and Audi MQB-platform vehicles. Would you like all future CMS Girodisc listings to include this standalone “Vehicle Fitment” section automatically right after the intro (before Features)? Features - Direct replacement for the OEM 340mm front discs; no modifications or adapters required. - Two-piece floating construction for reduced unsprung weight and faster suspension response. - 6061-T6 aluminum hat and proprietary cast iron rotor ring for optimal strength and heat management. - Curved vane design improves airflow and cooling efficiency during repeated heavy braking. - Floating mount system with ten high-strength alloy steel drive pins allows axial and radial float to reduce stress and distortion. - Spring washers eliminate the rattle typically associated with floating rotors while allowing thermal expansion. - Class 12.9 hardware and cadmium-plated pins resist corrosion for long-term durability. - Designed, cast, and machined entirely in the USA to Girodisc’s exacting motorsport standards. Specifications Rotor Diameter: 340mmWeight: 20.3 lbs (each)OEM Rotor Weight: 23.8 lbs (each)Rotor Type: Two-piece floatingMaterial: Proprietary cast iron with 6061-T6 aluminum hatHardware: 10 alloy steel drive pins with spring washersFitment: VW / Audi MQB-platform vehicles with 340mm front brakesSold as: Pair (left and right front rotors) FAQs: VW / Audi MQB 340mm Front Rotors (Girodisc) What vehicles are these rotors compatible with? These fit VW and Audi MQB-platform vehicles equipped with 340mm front brakes, such as the Golf R, GTI Performance Pack, Audi S3, and other compatible models. Do these rotors require caliper spacers or new pads? No, they are a direct bolt-on replacement that uses your existing calipers and OEM pad shape. How do these improve braking performance? The Girodisc system reduces weight, improves airflow through the curved vane design, and enhances temperature stability for better consistency under heavy braking. Are they noisy during street driving? No. The floating pins are mounted with anti-noise spring washers that eliminate rattle while maintaining full float functionality under heat. How is maintenance handled? Once installed, only the cast iron rings need to be replaced when worn. The aluminum hats and hardware can be reused following Girodisc service recommendations. Ordering Information Sold and priced per pair. Includes left and right front Girodisc 340mm rotors for VW and Audi MQB vehicles. Direct bolt-on fit with OEM calipers.