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Performance Friction PFC 390.075.63-64 390mm Two-Piece Rear Floating Racing Brake Rotors Fit The Following Cars (w/ OEM PCCB Rotors) Porsche 992 GT3 (Rear) Porsche 992 GT3RS (Rear) Porsche 718/982 GT4RS (Rear) Porsche 991 GT2RS/GT3/GT3RS (Rear) Porsche 981 GT4 (Rear) PFC the manufacturer of Porsche Cup braking systems developed a 390x32 mm rear rotor replacement kit that is a direct replacement for the OEM Steel Brake 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. PFC’s V3 discs are optimized to ensure the highest level of performance, wear and durability for your Porsche’s braking system.  These high-performance OEM replacement assemblies now feature aluminium hats in both front and rear, similar to the original. There is a saving of over one pound by trimming excess material from the unused areas around the disc in our new V3 ZeroFailures™ design, which will allow for disc changes in a matter of seconds with a flat head screwdriver. Sold/priced per pair.

Performance Friction PFC 380.075.63-64 380mm Two-Piece Rear Floating Racing Brake Rotors Fit The Following Cars (w/ OEM Iron Rotors) Porsche 992 GT3 (Rear) Porsche 992 GT3RS (Rear) Porsche 718/982 GT4RS (Rear) Porsche 991 GT2RS/GT3/GT3RS (Rear) Porsche 981 GT4 (Rear) PFC the manufacturer of Porsche Cup braking systems developed a 380x30 mm rear rotor replacement kit that is a direct replacement for the OEM Steel Brake 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. PFC’s V3 discs are optimized to ensure the highest level of performance, wear and durability for your Porsche’s braking system.  These high-performance OEM replacement assemblies now feature aluminium hats in both front and rear, similar to the original. There is a saving of over one pound by trimming excess material from the unused areas around the disc in our new V3 ZeroFailures™ design, which will allow for disc changes in a matter of seconds with a flat head screwdriver. Sold/priced per pair.

GiroDisc A2-307 Rear Brake Rotors  These Girodisc A2-307 2-piece rear rotors directly replace the 345 mm rear rotor package on Toyota GR Supra 3.0 and select BMW G-chassis models. Floating construction reduces rotating mass and improves cooling while maintaining OE parking brake and ABS.  GiroDisc A2-307 Brake Rotor Fitment Guide Toyota GR Supra 3.0 (A90/A91) – Rear BMW G20/G21 M340i – Rear BMW G22/G23 M440i – Rear BMW G20/G22 with optional M Sport brakes – Rear BMW G01 X3 M40i & G02 X4 M40i – Rear BMW G29 Z4 M40i – Rear Applies to vehicles equipped with the 345 mm rear rotor package. Curved-Vane Cooling High-carbon iron rings with 48 curved vanes act as a centrifugal pump to move air through the disc. Reusable hats and spring-preloaded floating hardware allow thermal expansion without rattle for street use. GiroDisc A2-307 Brake Rotor Features Direct OE replacement; no modifications required 2-piece floating construction reduces unsprung/rotational mass High-carbon iron rings; reusable 6061-T6 aluminum hats 48-vane internal geometry for airflow and cooling Manufactured and assembled in Bellingham, WA Sold/priced per pair

D2-319 Girodisc Corvette C8 Z06, E-Ray Rear Replacement Rings These Girodisc D2-319 rear replacement rings are sold in pairs and include replacement hardware. They are designed to be used with existing Girodisc aluminum hats on Corvette C8 Z06 and E-Ray rear applications and are not compatible with OEM or other aftermarket hats. Vehicle Fitment Chevrolet Corvette C8 Z06 (Rear) Chevrolet Corvette C8 E-Ray (Rear) Refresh Your Two-Piece Rear Rotors High-carbon iron rings with 48 curved vanes deliver strong cooling and stable performance under heavy braking. Reusing your Girodisc hats keeps long-term service costs low. Features Replacement rings only; reuse Girodisc aluminum hats Sold in pairs with replacement hardware High-carbon iron rings for reliable braking 48 curved vanes for efficient cooling Direct fit for Girodisc A2-319 rear rotor kits D2-319 Girodisc Corvette C8 Z06, E-Ray Rear Replacement Rings FAQs: Do these include hats? No, these are rings only and require existing Girodisc hats. Are they sold individually? No, they are sold as a pair. Are these compatible with OEM hats? No, only Girodisc hats are compatible. Are these suited for track use? Yes, they are built for demanding heat cycles. Related Products A1-320 Girodisc Corvette C8 Z06, E-Ray Front Iron Rotor Conversion A2-319 Girodisc Corvette C8 Z06, E-Ray Rear Rotors D1-320 Girodisc Corvette C8 398mm Front Replacement Rings D2-319 Girodisc Corvette C8 Z06, E-Ray Rear Replacement Rings

Girodisc  Rear Brake Rotors – Porsche 991 GT3 Cup Car The Girodisc A2-238 Rear Rotor Set (380x30mm) is a direct replacement for the OE cup car discs used on the Porsche 991 GT3 Cup. Engineered for performance and reliability under extreme track conditions, these rotors bolt directly to your car and work seamlessly with the original calipers and ABS system—no modifications required. Race-Proven Two-Piece Design Each Girodisc rotor is designed and manufactured in the USA with precision components to ensure durability and superior thermal management. The central hat section is CNC-machined from U.S.-sourced 6061-T6 aircraft-grade aluminum, while the outer ring is made from Girodisc’s proprietary cast iron alloy, poured and machined entirely in-house. The curved vane design actively pumps cooling air through the disc, reducing temperatures during intense braking to prevent fade and warping. A2-238 Girodisc 380mm 2pc Rear Brake Rotor Features • Direct replacement for OEM Porsche 991 GT3 Cup rear discs (380x30mm)• Two-piece floating rotor design for optimal heat management• 6061-T6 aluminum hats machined from U.S.-sourced billet• Proprietary cast iron rotor rings with curved vane cooling geometry• 12 high-strength alloy steel drive pins with cadmium plating• Anti-noise spring washers eliminate rattle while maintaining full float• Class 12.9 hardware and hardened washers for secure mounting• Significantly reduces unsprung and rotational mass• Reusable hats—replace only rings when worn• Sold/priced per pair• Optional center-lock drive pin kit available A2-238 Girodisc 380mm 2pc Rear Brake Rotor Vehicle Fitment • Porsche 991 GT3 Cup (All model years) – Rear• Fits OEM calipers and ABS• Center-lock wheel option available upon request A2-238 Girodisc 380mm 2pc Rear Brake Rotor FAQs Do these rotors fit directly without modifications? Yes. The Girodisc A2-238 system is a direct bolt-on replacement for OEM rear discs on the 991 GT3 Cup. What is the advantage of a two-piece floating rotor? The floating design allows the iron rotor ring to expand under heat without stressing the aluminum hat, improving performance, reducing weight, and preventing cracking or distortion. Can I reuse the aluminum hats? Yes. Once the cast iron rings wear out, you can replace just the rings and retain the existing hats and hardware. Do these rotors make noise? No. The use of anti-noise spring washers ensures quiet operation even when cold, while maintaining true floating capability under heat. Are these rotors sold individually? No. The Girodisc A2-238 rotors are sold as a pair for the rear axle. Is a center-lock version available? Yes. Girodisc offers a specific drive pin option for vehicles equipped with OEM center-lock hubs—select this option when ordering. Enhance your Porsche 991 GT3 Cup’s braking performance with the Girodisc A2-238 2-Piece Rear Brake Rotors (380x30mm)—precision-engineered, race-proven, and built to handle the most demanding conditions on track.

Girodisc Corvette C6 ZR1 Rear Iron Rotor  Replace your factory carbon-ceramic rotors with Girodisc’s high-performance iron rotor conversion for the Corvette C6 ZR1. This bolt-on system provides exceptional braking consistency, reduced operating costs, and race-proven heat management—all while maintaining full compatibility with factory calipers and ABS systems. Direct OEM Replacement for Carbon-Ceramic Rotors The Girodisc system is a true plug-and-play upgrade for the C6 ZR1, offering the same dimensions as the OEM carbon-ceramic rotors without requiring any modifications. The two-piece floating design features a CNC-machined 6061-T6 aluminum hat and a proprietary high-carbon cast iron rotor ring. This setup allows the rotor to expand under heat, maintaining consistent contact with brake pads and preventing warping or fade during extreme conditions. Features • Direct replacement for OEM carbon-ceramic rear rotors• Precision-machined 6061-T6 billet aluminum hats• Proprietary high-carbon cast iron rings cast and machined in the USA• Floating mount system with 12 cadmium-plated alloy steel drive pins• Anti-noise spring washers prevent rattling while maintaining float• Curved vane design acts as a centrifugal pump for superior cooling• Fully rebuildable—replace only the rotor rings when worn• Sold/priced in pairs Vehicle Fitment Chevrolet Corvette C6 ZR1 (2009–2013)Compatible with OEM carbon-ceramic brake systems and factory calipers. Girodisc A2-184 Rear Rotor FAQs: Do these Girodisc rotors replace the factory carbon-ceramic setup? Yes, this iron rotor conversion is engineered as a direct replacement for the OEM carbon-ceramic rotors on the C6 ZR1. Are the rotors lighter than the carbon-ceramic ones? No. While slightly heavier, Girodisc rotors provide improved heat capacity, better pedal feel, and lower long-term maintenance costs. Can these rotors handle track use? Absolutely. When combined with quality performance pads and high-temperature brake fluid, Girodisc rotors offer outstanding durability and fade resistance under extreme track conditions. Are they compatible with OEM calipers and sensors? Yes. These rotors fit perfectly with the factory ZR1 calipers and retain all OEM brake system functions. Experience consistent, confidence-inspiring braking on your C6 ZR1 with Girodisc’s rear iron rotor conversion—a proven upgrade for performance enthusiasts and track drivers alike.

Girodisc Chevrolet Camaro Z/28 (5th Gen) Rear Iron Rotor Conversion Upgrade your 5th-Gen Camaro Z/28 with Girodisc’s rear iron rotor conversion, engineered as a direct replacement for the OEM carbon-ceramic rotors. This high-performance setup delivers superior heat control, lower replacement costs, and the same confident braking feel that made the Z/28 a track legend. Direct Carbon-Ceramic Replacement, Built to Perform The Girodisc system is a true bolt-on solution—no modifications or adapters needed. Each rotor features a CNC-machined 6061-T6 aluminum hat mated to Girodisc’s proprietary cast-iron friction rings, both made in the USA. The floating two-piece design manages heat expansion under hard braking, maintaining perfect pad contact and preventing warping. Curved internal vanes act like centrifugal pumps to pull cooling air through the discs, keeping temperatures in check lap after lap. Features • Direct replacement for OEM carbon-ceramic rear rotors• Billet 6061-T6 aluminum hats with hard-anodized finish• Proprietary cast-iron rings poured and machined in the USA• Floating mount system with cadmium-plated steel drive pins• Anti-noise spring washers eliminate rattle while allowing float• Curved vane design improves airflow and cooling• Fully rebuildable—replace only the rotor rings when worn• Sold/priced per pair Vehicle Fitment Chevrolet Camaro Z/28 (2014–2015, 5th Generation)Fits OEM carbon-ceramic brake systems with factory Brembo calipers. Girodisc A2-172 Rear Rotor FAQs: Why switch from carbon-ceramic to iron rotors? Iron rotors offer greater heat capacity, improved modulation, and dramatically reduced replacement cost—ideal for track-day or endurance use where carbon ceramics can degrade quickly. Are these a direct fit for the Z/28’s carbon-ceramic setup? Yes. They bolt directly to the factory hubs and work with the original Brembo calipers and parking-brake system. Do these affect ABS or stability control? No. Girodisc rotors maintain factory geometry and tone-ring compatibility, so all electronic systems function normally. What difference will I feel when driving? Expect smoother pedal feedback, improved heat management under repeated hard braking, and more consistent stopping power throughout a session. Upgrade your Camaro Z/28 with Girodisc’s rear iron rotor conversion and experience the durability, balance, and braking precision trusted by serious track drivers everywhere.

Girodisc Dodge Viper ACR Rear Iron Rotor Conversion Upgrade your Dodge Viper ACR’s braking performance with Girodisc’s precision-engineered rear iron rotor conversion. Designed to replace the OEM carbon-ceramic rotors, this setup delivers enhanced durability, improved thermal stability, and lower maintenance costs—ideal for drivers who push their ACRs to the limit on track. Race-Ready Iron Rotor Conversion The Girodisc system bolts directly to the Viper ACR’s factory hubs and Brembo calipers with no modifications required. Each rotor features a CNC-machined 6061-T6 aluminum hat mated to Girodisc’s proprietary high-carbon cast iron friction ring. This two-piece floating design allows the rotor to expand under heat without distortion, ensuring consistent pad contact and pedal feel during long track sessions. With superior heat capacity and rebuildable components, these rotors are a smart, serviceable alternative to OEM carbon ceramics. Features • Direct bolt-on replacement for OEM carbon-ceramic rear rotors• Billet 6061-T6 aluminum hats with hard-anodized finish• Proprietary high-carbon cast iron friction rings made in the USA• Floating mount system with cadmium-plated steel drive pins• Anti-noise spring washers eliminate rattle while maintaining float• Curved vane internal design enhances airflow and cooling• Fully rebuildable—replace only the rotor rings when worn• Sold/priced per pair Vehicle Fitment Dodge Viper ACR (2016–2017)Also compatible with models originally equipped with factory carbon-ceramic brakes. Girodisc A2-165 Rear Rotor FAQs: Why convert from carbon-ceramic to iron rotors? Iron rotors offer improved heat management, better pedal modulation, and dramatically reduced replacement costs—ideal for frequent track use where carbon ceramics can wear prematurely. Do these rotors bolt directly to the factory hardware? Yes. The Girodisc conversion reuses OEM hubs, calipers, and mounting hardware for a precise, no-fuss installation. Will these change brake balance or ABS calibration? No. Girodisc maintains OEM dimensions and weight distribution to preserve factory brake bias and electronic control functions. How do they perform compared to the OEM carbon-ceramic setup? Expect slightly more initial bite, consistent braking through extended sessions, and superior heat tolerance during aggressive driving. Bring race-proven reliability and serviceability to your Dodge Viper ACR with Girodisc’s rear iron rotor conversion—built for the demands of the world’s most capable track car.

Girodisc Ferrari 360x32mm Rear Rotors Enhance the braking performance of your Ferrari 360 with Girodisc’s lightweight, high-performance 32mm rear rotors. Designed as a direct replacement for OEM units, these precision-engineered rotors improve cooling efficiency, reduce unsprung mass, and maintain the car’s factory brake balance for predictable, consistent stopping power. Precision-Built Replacement for OEM Ferrari Rotors The Girodisc system bolts directly to the factory hubs and calipers—no modifications required. Each rotor features a U.S.-sourced 6061-T6 aluminum hat paired with Girodisc’s proprietary high-carbon cast iron friction ring. This floating two-piece design allows for heat expansion without warping, ensuring smooth pedal feel and long-term reliability. The curved vane internal design acts as a centrifugal pump, drawing cooling air through the disc for superior thermal management during spirited driving or track sessions. A2-161 Girodisc Ferrari 360x32mm Rear Rotors Features • Direct OEM replacement—no modifications required• Lightweight 6061-T6 billet aluminum hats with anodized finish• Proprietary high-carbon cast iron rings cast and machined in the USA• Floating mount system with 10 cadmium-plated steel drive pins• Anti-noise spring washers eliminate rattle and maintain float• Curved vane internal design for efficient heat dissipation• Fully rebuildable—replace only the iron rings when worn• Sold/priced per pair A2-161 Girodisc Ferrari 360x32mm Rear Rotors Vehicle Fitment Ferrari 812 Superfast / GTS Ferrari 296 GTB/GTS Ferrari 488 Pista Ferrari F8 Tributo Ferrari 360 Modena (1999–2005) Ferrari 360 Spider (2001–2005) Ferrari 360 Challenge Stradale (2003–2004) Compatible with OEM calipers and factory braking systems. Girodisc A2-161 Rear Rotor FAQs How do these rotors differ from OEM? Girodisc rotors weigh less, dissipate heat faster, and are fully rebuildable—so you only replace the iron rings instead of the entire assembly. Are these suitable for both street and track driving? Absolutely. They perform flawlessly under daily driving conditions and provide the thermal stability needed for extended track sessions. Will these change brake bias or ABS function? No. The Girodisc rotors match OEM dimensions to maintain perfect brake bias and full ABS compatibility. Upgrade your Ferrari 360’s braking system with Girodisc’s 32mm rear rotors—crafted for precision, performance, and reliability mile after mile.

Girodisc Ford GT ('05–06) Rear Rotors Built for the legendary 2005–2006 Ford GT, Girodisc two-piece rear rotors combine precision engineering with race-proven performance. These lightweight replacements bolt directly to the OEM calipers, reducing unsprung mass while improving heat management, pedal feel, and overall control under hard braking. Giro Disc A2-043 Vehicle Fitment Ford GT (2005–2006)Direct OEM replacement – installs with factory calipers and hardwareNo modifications or adapters required Lightweight, Track-Ready Design The Girodisc system replaces the factory cast rotors with fully rebuildable two-piece floating assemblies. Each unit features a CNC-machined 6061-T6 aluminum hat paired with Girodisc’s proprietary cast-iron friction rings, both made in the USA. The internal curved vanes function as centrifugal pumps, drawing air through the rotor to maintain consistent cooling during repeated high-load stops. At just 20 lbs per rotor, the setup cuts substantial rotating mass, improving throttle response and suspension dynamics without altering brake bias or ABS calibration. Giro Disc A2-043 Features • Direct OEM replacement – no modification required• 6061-T6 billet aluminum hats, hard-anodized for durability• Proprietary cast-iron friction rings machined in the USA• Floating mount system with cadmium-plated steel drive pins• Anti-noise spring washers prevent rattling and allow thermal float• Curved internal vane design enhances airflow and heat dissipation• 20 lb per rotor – lighter than OEM cast rotors• Retains factory bias and ABS function• Fully rebuildable – replace only friction rings when worn• Sold/priced per pair Girodisc A2-043 Rear Rotor FAQs Why are Girodisc rotors ideal for the 2005–2006 Ford GT? They’re engineered to match the car’s factory brake balance while offering modern cooling efficiency and weight reduction, maintaining the GT’s original character with improved performance. Do these rotors change pedal feel? Yes—in a good way. The lighter, two-piece design provides a more immediate and consistent pedal response, especially under repeated hard stops. How do they handle heat during track use? The internal curved vanes pump air through the rotor to stabilize temperature, dramatically reducing fade and minimizing wear on pads and seals. Are they serviceable for long-term ownership? Absolutely. Girodisc rotors are fully rebuildable—when the friction rings wear out, only those components are replaced, keeping the original aluminum hats and saving cost over time. Maintain your Ford GT’s legendary braking precision with Girodisc rear rotors—American-made, track-tested, and built for supercar performance that lasts.

Girodisc Lamborghini Gallardo ('04–08) 335mm Rear Rotors Upgrade your early-generation Lamborghini Gallardo’s braking system with Girodisc’s 335mm two-piece rear rotors. Designed as a direct OEM replacement, these rotors deliver superior heat control, reduced unsprung weight, and precise braking feedback—all while maintaining the factory caliper setup and brake balance that define Gallardo performance. Vehicle Fitment Lamborghini Gallardo (2004–2008)Direct OEM replacement – 335mm rear rotor sizeCompatible with factory calipers and hardwareNo modifications or adapters required Precision-Crafted for Exotic Performance The Girodisc system replaces the factory cast-iron rotors with a lightweight, rebuildable two-piece floating design. Each assembly pairs a CNC-machined 6061-T6 aluminum hat with Girodisc’s proprietary cast-iron friction ring, both made in the USA. Internal curved vanes act as centrifugal pumps, channeling air through the rotor to reduce heat and improve braking consistency. This advanced design maintains the Gallardo’s balanced brake bias and enhances both on-road control and track endurance. Features • Direct OEM replacement – 335mm diameter• 6061-T6 billet aluminum hats, machined and anodized in the USA• Proprietary cast-iron friction rings poured and machined in-house• Floating mount system with cadmium-plated steel drive pins• Anti-noise spring washers eliminate rattle and allow thermal expansion• Curved internal vane design for superior cooling• Reduces unsprung mass for quicker handling response• Retains OEM brake balance and ABS calibration• Fully rebuildable – replace only friction rings when needed• Sold/priced per pair Girodisc A2-034 Rear Rotor FAQs: Are these rotors a direct fit for early Gallardo models? Yes. They’re engineered specifically for 2004–2008 Gallardo applications, bolting directly to the OEM calipers without any modification. How do these differ from the factory rotors? Girodisc rotors use a two-piece floating design that improves heat dissipation and reduces weight, giving faster suspension response and longer component life. Do they improve performance under heavy braking? Absolutely. The curved vane construction and high-carbon iron composition deliver stable temperatures and consistent braking on both street and track. Are they serviceable over time? Yes. When the friction rings wear out, they can be replaced independently of the aluminum hats, saving cost and maintaining long-term reliability. Enhance your Gallardo’s stopping power and heat control with Girodisc rear rotors—precision-built in the USA for true supercar performance and confidence.

Girodisc Mercedes 330mm Rear Rings Refresh the stopping performance of your Mercedes AMG with Girodisc D2-022 330mm rear replacement rings. These precision-engineered rings bolt directly to your existing Girodisc aluminum hats using the included floating hardware kit. Replace only the worn rotor surface to maintain lightweight performance, reduce service costs, and preserve your AMG’s braking balance on road or track. Vehicle Fitment Compatible with:• Mercedes-Benz C63 AMG (W204 / W205 chassis)• Mercedes-Benz E63 AMG (W212 / W213 chassis)• Mercedes-Benz CLA45 AMG (W117 chassis, steel rotor applications)Note: Designed for Girodisc 330mm two-piece rear rotor systems only. Not compatible with OEM one-piece or carbon-ceramic rotors. Features • Sold as a left/right pair with full floating hardware kit• Direct replacements for Girodisc 330mm two-piece rear rotors• CNC-machined from proprietary high-carbon cast iron for durability• Directional curved vanes provide superior airflow and heat management• Maintains OEM brake bias and ABS calibration• Designed exclusively for Girodisc aluminum hats – not compatible with OEM or other brands Specifications • Diameter: 330mm• Position: Rear• Material: High-carbon cast iron• Surface: Plain (non-dimpled/slotted)• Mount type: Floating two-piece system• Includes: Two rings and hardware kit• Sold/priced per pair• MSRP: $780.00 Girodisc D2-022 Mercedes Rear Ring FAQs Do these fit factory Mercedes rotor hats? No. The D2-022 rings are designed exclusively for Girodisc aluminum hats and will not fit OEM one-piece rotors. Can I use these with AMG Performance Pack calipers? Yes. They’re fully compatible with all OEM AMG calipers using the steel rotor configuration. Are these suitable for daily driving? Absolutely. Girodisc rotors deliver quiet operation on the street while providing race-ready performance under load. When should I replace my Girodisc rings? Replace them when the rotor surface reaches minimum thickness or shows heat checking from repeated heavy braking. Upgrade your Mercedes AMG braking system with Girodisc D2-022 330mm rear replacement rings — engineered for precision, cooling, and fade-free braking on both street and circuit.

Girodisc Mercedes CLK63 Black Series Rear Rotors Upgrade your AMG with Girodisc’s precision-engineered two-piece rear rotors for the Mercedes-Benz CLK63 Black Series. Built as a direct OEM replacement, these lightweight rotors improve cooling, reduce unsprung weight, and deliver consistent, fade-free braking performance for both road and track driving. Vehicle Fitment Mercedes-Benz CLK63 AMG Black Series (C209)Direct OEM replacement – no modifications requiredCompatible with factory calipers and hardware Designed for AMG Precision and Control The Girodisc system replaces the factory one-piece rotors with a two-piece floating design that enhances heat management and braking consistency. The rotor hats are CNC machined from 6061-T6 aircraft-grade aluminum and paired with Girodisc’s proprietary cast-iron friction rings—both made in the USA. This design maintains OEM brake bias and ABS calibration while delivering smoother, more responsive pedal feel and extended rotor life. Features • Direct bolt-on replacement for OEM rear rotors• 6061-T6 billet aluminum hats, machined and anodized in the USA• Proprietary cast-iron friction rings, poured and machined in-house• Floating mount system with cadmium-plated steel drive pins• Anti-noise spring washers eliminate rattle and manage heat expansion• Significantly reduces unsprung and rotational mass• Retains factory brake bias and ABS functionality• Fully rebuildable – replace only the friction rings when needed• Sold/priced per pair Girodisc A2-025 Rear Rotor FAQs: Do these rotors fit directly on the CLK63 Black Series? Yes. They’re designed as a direct bolt-on replacement and work seamlessly with the factory calipers and parking brake assembly. How do they differ from the dimpled and slotted version? This smooth-surface version focuses on maximum pad contact and quieter operation while maintaining the same two-piece floating design and weight reduction benefits. Are these rotors suitable for aggressive driving or track days? Absolutely. Girodisc rotors are engineered for high thermal capacity and stability, making them ideal for both spirited road driving and performance use. Will these reduce brake fade? Yes. The two-piece floating construction and ventilated vane design promote superior cooling and consistent braking under repeated heavy use. Take your CLK63 Black Series braking to the next level with Girodisc rear rotors—crafted for balance, durability, and uncompromising AMG performance.

Girodisc Mercedes 330mm Rear Rotors Girodisc 330mm rear rotors offer a direct OEM replacement solution engineered for Mercedes performance and reliability. These lightweight two-piece rotors improve cooling efficiency, reduce unsprung mass, and maintain perfect balance between braking power and factory ABS operation. Ideal for spirited street driving or track use, they deliver superior stopping performance without compromising comfort or noise levels. Vehicle Fitment Compatible with the following Mercedes-Benz and AMG models equipped with 330mm rear rotors:• A45 AMG (W176, 2013–2018)• CLA45 AMG (C117, 2013–2019)• A35 AMG (W177, 2018+)• CLA35 AMG (C118, 2018+)• GL-Class (GL320, GL350 – select trims)• ML-Class (ML320, ML350 – select trims)• R-Class (R320, R350 – select trims)Direct OEM replacement – bolts directly to factory calipers and hardware with no modifications required. Precision Engineering, Race-Proven Design The Girodisc system replaces the factory one-piece rotor with a two-piece floating design for maximum performance and thermal control. Each aluminum hat is CNC-machined from 6061-T6 aircraft-grade material and hard-anodized for strength and corrosion resistance. The proprietary cast iron rotor rings are poured and machined in the USA, featuring a curved vane structure that acts as a centrifugal pump to pull air through the disc for optimal cooling. Features • Direct replacement for OEM Mercedes 330mm rear rotors• Lightweight two-piece floating design• CNC-machined 6061-T6 aluminum hats• Proprietary high-carbon cast iron friction rings• Curved vane internal cooling for high thermal efficiency• Cadmium-plated steel drive pins for durability• Anti-noise spring washers eliminate rattle and vibration• Rebuildable design – replace only the iron rings when needed• Made in the USA• Sold/priced per pair Girodisc A2-022 Rear Rotor FAQs: Are these rotors compatible with factory calipers? Yes. The Girodisc A2-022 rotors are designed to bolt directly to your Mercedes hub and work perfectly with the OEM calipers and hardware. What’s the main difference from the dimpled and slotted version? The A2-022 uses a smooth surface for maximum pad life and quiet operation, while the A2-022DS adds extra bite and debris clearing for aggressive use. Do they require any special brake pads? No. Girodisc rotors are compatible with OEM or aftermarket pads, giving you flexibility for street or track use. Why choose Girodisc over OEM rotors? Girodisc rotors are lighter, rebuildable, and engineered for improved heat management—delivering better performance and reduced long-term cost compared to factory rotors. Experience the balance of precision engineering and race-proven performance with Girodisc Mercedes 330mm rear rotors, the perfect upgrade for drivers who demand confidence under every stop.

AP Racing J Hook 350x34mm Replacement Front Brake Rotor Rings This kit is two replacement rotor discs and new installation hardware only. Center hats are not included. Replacement rotor rings for AP Racing 13.01.20012. Fits The Following Cars (w/ OEM iron rotors): Porsche 992 911 S/4S/GTS Porsche 991 911 S/4S/GTS Sold/priced per pair of rotor rings (including hardware). AP Racing J Hook Brake Rotors – The Gold Standard in Track Day & Racing Performance Engineered for professional motorsport, HPDE, and dedicated track day use, AP Racing’s J Hook Brake Rotors deliver uncompromising performance, thermal stability, and consistent braking power. These two-piece, floating rotors are built to handle the extreme demands of road racing, with design features derived from over 50 years of elite competition—including Formula 1, NASCAR, and IMSA. Unlike conventional one-piece rotors, AP Racing’s two-piece floating design features a billet aluminum hat mated to a cast iron disc via precision-engineered bobbins. This setup allows for controlled radial expansion under high heat, minimizing distortion and coning. The result? More even pad wear, a firmer pedal feel, and longer component life, even during extended lapping sessions or endurance racing. Floating hardware includes anti-knockback spring clips that reduce piston retraction while eliminating common NVH issues like rattling. Why Choose AP Racing J Hook Rotors? Advanced Cooling, Superior Bite, Unmatched Durability At the heart of every rotor is AP Racing’s proprietary high-carbon iron alloy, developed to withstand repeated thermal cycling without cracking or warping. Internally, directional vanes—far superior to OEM pillar or straight vane designs—maximize airflow and cooling. With 60 to 84 vanes per rotor, AP Racing achieves faster heat evacuation, reduced brake fade, and a more consistent friction surface. These rotors are left/right-specific for optimal airflow and balance. The exclusive J Hook slot pattern offers enhanced initial bite and promotes uniform heat distribution across the rotor face, reducing pad deposits and vibration. Unlike drilled rotors or straight-slot competitors, the J Hook design provides cleaner pad transfer during bed-in and superior modulation under braking—ideal for serious drivers who demand feedback and control. Yes, you might hear a little more whirr, but you’ll gain the stopping power, consistency, and longevity your lap times demand. Premium Components, Affordable Performance The rotor hats are CNC-machined from 6061-T6 billet aluminum and hard anodized for strength and heat resistance. Scalloped edges under the hat further assist heat dissipation. All hardware is U.S.-made to AP Racing spec, the same quality found on pro-level racing platforms. And while these rotors are race-proven, they’re also surprisingly cost-effective to replace. Don’t settle for cheap rotors that crack after a weekend—AP’s J Hook rings offer better durability and real long-term value. Fewer replacements mean more track time, less downtime, and peace of mind knowing you're running the best. Used by Champions. Trusted by Experts. From endurance racers to HPDE enthusiasts, AP Racing brake rotors are trusted worldwide for their reliability, longevity, and performance under pressure. Whether you're shaving seconds off your lap time or building a dedicated track car, the J Hook delivers a professional-grade solution that won’t let you down. AP Racing J Hook Brake Rotors for Auto Racing, Track Days & HPDE Why Rotor Design Matters: Heat Expansion and Floating Technology As with most metals, iron brake discs expand significantly under heat. When temperatures rise, the disc grows radially—expanding in both diameter and circumference. Traditional one-piece rotors struggle to accommodate this natural expansion. As the outer edge pulls away from the center under heat stress, it creates a condition called “coning”—a distortion that compromises pad-to-rotor contact. This distortion can lead to uneven pad wear, brake tapering, and an inconsistent, long brake pedal. AP Racing two-piece floating brake rotors are purpose-built to eliminate these issues. Engineered with “float” built into the disc or hat assembly, these rotors feature oblong-shaped mounting holes that allow the hardware to slide as the disc heats up. This flexibility ensures the disc runs true within the caliper under high-temperature loads, effectively reducing distortion, minimizing pad taper and stress cracks, and promoting longer component life. Custom Mounting Hardware & Anti-Knockback Spring Clips AP Racing rotors utilize application-specific, U.S.-made mounting hardware—not generic bolts. These premium components are the exact parts used in AP’s professional motorsport products, engineered to withstand the rigors of competitive racing. To manage lateral disc motion that can push caliper pistons backward (known as knockback), AP Racing integrates anti-knockback spring clips on alternating bobbins—five on a ten-bolt setup, six on a twelve-bolt disc. These clips keep the aluminum hat and iron disc ring properly aligned while still allowing for radial float. Bonus: they eliminate annoying rattles and vibrations, ensuring a quieter, more refined braking experience. High-Performance Hat Design for Heat Isolation The disc hats in AP Racing’s two-piece floating rotors are CNC-machined from 6061-T6 billet aluminum and finished with a hard anodized coating. This high-strength aluminum alloy was selected for its ability to maintain structural integrity even at elevated temperatures. AP adds scalloped channels beneath the hat to further encourage airflow and heat evacuation from the outer disc face, minimizing thermal transfer to hubs and wheel bearings—helping reduce maintenance costs on these expensive components. Internal Vane Engineering: Airflow Optimization & Thermal Stability AP Racing’s internal vane design sets them apart from OEM and most aftermarket competitors. While many factory brake discs use non-directional pillar vanes (low-cost and NVH-focused), AP Racing rotors use directional vanes engineered for maximum airflow. These rotors are side-specific—meaning you’ll receive a unique left and right disc in each set—ensuring optimized cooling through strategic vane orientation and shape. Beyond that, AP Racing rotors feature a superior vane count, typically ranging from 60 to 84 vanes, compared to 30–48 in most aftermarket rotors. After extensive CFD and thermal analysis, this high vane count was proven to: Increase airspeed and thermal transfer Reduce recirculation and deflection at the disc face Minimize coning, cracking, and brake fade Deliver more even pad contact and extended rotor life J Hook Slot Pattern: Exclusive to AP Racing Slots and drill holes may improve initial bite, but they also introduce “cool spots” in the rotor face—areas of uneven heating that can lead to stress risers, cracks, and pad vibration. OEM rotors often avoid this by leaving the disc face blank, but that compromises bite and brake feel. AP Racing’s patented J Hook design, developed through rigorous R&D, solves this problem. The hooks are meticulously spaced around the disc’s circumference and from hat to edge, forming a continuous distortion path that ensures even heat distribution. This encourages uniform pad deposits during bed-in, helps reduce judder and cracking, and improves consistency under repeated high-load braking. In addition, the J Hook slots provide more leading edges for pads to grip than traditional curved slots or blank rotors. While this might generate a mild whirring sound during braking, the benefits—more bite, cleaner bedding, better pedal feel—make it the top choice for committed racers and serious track day drivers. Metallurgy Backed by 50+ Years of Motorsport Leadership AP Racing's reputation is built on performance, and their proprietary iron alloy used in J Hook rotors is no exception. Drawing from over five decades of elite motorsport experience, including 750+ Formula 1 wins and widespread use across NASCAR, AP’s engineers have developed a disc alloy that excels under sustained racing temperatures and stress. Where OEM discs focus on affordability and mass production, AP Racing’s J Hook rotors are purpose-built for motorsport durability and heat resistance. Affordable Replacement Cost: Serious Value for Serious Drivers Even the best brake rotors are consumables. When you drive hard—especially at the track—your discs will eventually wear out. That’s why AP Racing designed their replacement iron rings to be cost-effective, allowing you to replace worn parts without breaking the bank. Compare that to constantly buying cheap $150 rotors every weekend—rotors that can't handle the heat and need to be swapped frequently. With AP Racing’s J Hook rotors, you get longer service intervals, less downtime, and better performance over time, making them an incredibly smart long-term investment. Proven on Track. Trusted by Champions. Top-tier racing teams rely on AP Racing J Hook rotors for one reason: they perform under pressure. Whether you're running time trials, attending HPDE events, or competing in wheel-to-wheel racing, these rotors offer professional-grade reliability, safety, and performance. Bedding and Preparation of AP Racing J Hook Discs Properly preparing your new brake discs before heavy use is extremely important. The goal of bedding-in your brake pads and discs is to mate them together properly and prepare them for heavy use.  When prepared properly, or bed-in, your pads will transfer a thin layer of material to the disc face (transfer layer).  The pads in your caliper will then actually ride on that thin layer of pad material you’ve put down on the rotor, rather than rubbing directly on the iron rotor face.  A good transfer layer is going to give you superior brake pedal feel, less noise, superior pad wear, and lower the chances of cracking your discs. Important Notes- PLEASE READ! First, make sure you are on a closed course to perform a proper bed-in.  Do NOT perform the procedure on public roads.  You need a stretch of asphalt with long straights, good visibility, and no potential obstructions.  Make sure you are in a position to safely and repeatedly attain the necessary speeds to perform the bed-in procedure.  A controlled racetrack is the best place to perform this procedure.  AP Racing and Competition Motorsport in no way suggest or condone speeding on public roads or breaking the law in your car, nor do we take responsibility for any damage or injury that occurs as a result of using our product or these procedures.  You are performing the bed-in procedure at your own risk.  During these procedures, it’s critical that you never come to a complete stop with your foot on the brake pedal.  If you have brake ducts on your car, you may want to block them off to allow your brake system to heat up easily. The procedure outlined below is a generic procedure for most types of mild race pad.  Please check your pad manufacturer’s recommended bed-in procedure. Accelerate to approximately 60mph and then decelerate down to 5 mph.  If your car has ABS, you should try to hold the brakes at a point just before ABS intervention.  Once the car slows to 5mph, immediately accelerate back up to about 60mph, and brake again to roughly 5mph.  Repeat this series of stopping and accelerating 8 to 10 times.  Again, do not come to a complete stop with your foot on the brake pedal. Cool the brake system down by cruising at 45mph+ for 5 to 10 minutes. Visually inspect your discs.  They should be a blue/grey color (instead of shiny silver), and have an even layer of pad material across and around the entire rotor face. If the AP Racing rotors don’t have a layer of pad material on them, perform another series of stops in the manner outlined above.

D1-157 Girodisc BMW E9X M3 Front Replacement Rings Restore the high-performance braking balance of your BMW M3 with Girodisc D1-157 380mm front replacement rings. These precision-machined components bolt directly to your existing Girodisc aluminum hats using the included floating hardware kit. Each ring is made from Girodisc’s proprietary high-carbon cast iron, delivering exceptional cooling capacity, consistent pedal feedback, and fade-free performance under repeated heavy braking. Vehicle Fitment Compatible with:• BMW E90 M3 Sedan (2008–2011)• BMW E92 M3 Coupe (2008–2013)• BMW E93 M3 Convertible (2008–2013)Note: Designed exclusively for Girodisc 380mm two-piece front rotor systems. Not compatible with OEM one-piece rotors or carbon-ceramic conversions. 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 improved thermal stability and durability• Directional curved vanes maximize airflow and rotor cooling• Maintains factory brake bias, ABS, and DSC calibration• Precision-balanced for vibration-free braking performance• 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 D1-157 BMW E9X M3 Front Ring FAQs Do these fit the OEM M3 rotor hats? No. These are designed only for Girodisc aluminum hats and will not fit OEM one-piece rotors or carbon-ceramic conversions. What pad compounds are recommended for this setup? For street use, Ferodo DS2500 or Hawk HPS 5.0 pads work well. For track days, Pagid RS29 or Endless MX72 provide stable friction and fade resistance. What torque should be used for the floating hardware? Torque each bolt to 12 ft-lbs (16 Nm) with blue Loctite. After the first track session, recheck hardware torque for consistency. Do these rotors improve braking feel? Yes. The two-piece floating design reduces unsprung weight and improves pedal modulation by managing heat transfer more efficiently than factory rotors. Upgrade your BMW E9X M3’s braking system with Girodisc D1-157 380mm front replacement rings — engineered for endurance, balance, and precision braking on both street and circuit.