Racing Brake Rotors

Girodisc Audi B5, B6, B7 S4 Rear Rotors Originally designed to support Stasis and 034Motorsport rear brake conversions, Girodisc’s 300mm rear rotors for the Audi S4 bring modern engineering to a classic platform. These lightweight, two-piece rotors replace the discontinued Stasis units and maintain full compatibility with existing brackets while offering superior heat control, lower weight, and race-proven durability. Vehicle Fitment Audi S4 (B5, 2000–2002)Audi S4 (B6, 2003–2005)Audi S4 (B7, 2005–2008)Compatible with Stasis or 034Motorsport rear caliper brackets configured for 300mm rotors. Performance and Precision This complete rotor assembly replaces both the hat and rotor, eliminating the need for rare Stasis replacements. Each unit features a CNC-machined 6061-T6 aluminum hat and Girodisc’s proprietary cast-iron friction ring. The curved vane design acts as a centrifugal pump, drawing air through the rotor for exceptional cooling under track or spirited use. A floating mount system allows the disc to expand evenly under heat, preserving pad contact and preventing warping. Features • Direct replacement for discontinued Stasis/034 rear rotor kits• Designed for 300mm caliper-bracket conversions on B5/B6/B7 S4• Lightweight 6061-T6 aluminum hats with hard-anodized finish• Proprietary cast-iron friction rings poured and machined in the USA• Floating mount system with 10 cadmium-plated steel drive pins• Anti-noise spring washers eliminate rattle and allow smooth thermal expansion• Curved vane internal design enhances cooling and fade resistance• Fully rebuildable—replace only the iron rings when worn• Sold/priced per pair Girodisc A2-143 Rear Rotor FAQs: Do these rotors replace the discontinued Stasis rotors directly? Yes. They’re designed as complete replacements for Stasis or 034Motorsport 300mm conversion kits—no additional parts are needed. Can these be used with the stock S4 rear calipers? Only when paired with Stasis or 034 rear caliper brackets that relocate the factory caliper for 300mm rotors. What benefits do these offer over the original Stasis parts? Improved metallurgy, better heat dissipation, and serviceability—Girodisc rotors can be rebuilt by replacing only the iron rings. Are they suitable for both street and track driving? Absolutely. These rotors offer quiet, smooth operation for daily use and the durability to handle repeated hard braking on track. Restore and upgrade your Audi S4’s braking performance with Girodisc 300mm rear rotors—precision-built to replace the Stasis design with superior quality and lasting performance.

Girodisc Corvette C7 (Z07 CCM) Rear Iron Rotor Conversion For Corvette owners running the Z07 carbon-ceramic package, Girodisc’s rear iron rotor conversion delivers a cost-effective and performance-proven upgrade. Designed to replace the factory CCM discs directly, this setup improves heat management and serviceability while retaining full compatibility with OEM calipers and the integrated parking brake. Vehicle Fitment Chevrolet Corvette C7 Z06 (Z07 Performance Package, 2015–2019)Chevrolet Corvette C7 Grand Sport (Z07 Performance Package, 2017–2019)Compatible with OEM Brembo carbon-ceramic calipers and factory parking brake system. Engineered for Precision and Durability The Girodisc system bolts directly to the factory hubs with no modifications required. Each rotor features a CNC-machined 6061-T6 aluminum hat paired with Girodisc’s proprietary high-carbon cast-iron friction ring. The floating two-piece design allows for controlled thermal expansion, maintaining consistent pad contact and pedal feel even during extended track use. Internal curved vanes draw cooling air through the disc, preventing fade and ensuring stable temperatures under repeated hard braking. Features • Direct replacement for OEM CCM rear rotors—no adapters required• 6061-T6 billet aluminum hats with hard-anodized finish• Proprietary high-carbon cast-iron rings, cast and machined in the USA• Floating mount system with 12 cadmium-plated drive pins• Anti-noise spring washers prevent rattle while maintaining float• Curved vane internal design for superior airflow and cooling• Fully rebuildable—replace only the rotor rings when worn• Sold/priced per pair Girodisc A2-145 Rear Rotor FAQs: Why convert from carbon-ceramic to iron rotors? Iron rotors provide more consistent pedal feel, superior heat tolerance, and drastically lower maintenance costs—ideal for track use or frequent spirited driving. Do these work with the stock Brembo calipers and parking brake? Yes. The Girodisc rotors are designed for a perfect OEM fit, retaining all factory brake functions and hardware. Will switching to iron rotors affect braking balance? No. The Girodisc system preserves factory rotor dimensions and maintains the original brake bias and ABS calibration. Are these suitable for heavy track use? Absolutely. The floating two-piece design and improved heat capacity make them ideal for endurance track sessions and repeated high-load braking. Give your C7 Z07-equipped Corvette reliable, track-ready stopping power with Girodisc’s rear iron rotor conversion—precision-machined for performance, consistency, and long-term durability.

Girodisc Porsche 991 GT3 Rear Rotors Designed for the demanding performance of the 991 GT3 and GT3 RS, these Girodisc rear rotors provide a lighter, stronger, and more heat-efficient upgrade over factory iron rotors. Built for drivers who push their cars to the limit, they offer exceptional pedal feel, cooling performance, and precision without altering OEM brake balance or ABS function. A2-146 Girodisc Porsche 991 GT3/GT3RS Rear Rotor Fitment Porsche 911 GT3 (991.1 & 991.2)Porsche 911 GT3 RS (991.1 & 991.2)Compatible with OEM iron rotor systems and factory calipers. Precision-Built for Track and Street Use The Girodisc system bolts directly to the factory hubs and calipers—no modifications or pad changes required. Each rotor features a CNC-machined 6061-T6 aluminum hat paired with Girodisc’s proprietary high-carbon cast-iron friction ring. The two-piece floating design allows for thermal expansion without warping, keeping braking consistent during intense heat cycles. Curved internal vanes act as centrifugal pumps to force cooling air through the disc, extending rotor life and minimizing fade. A2-146 Girodisc Porsche 991 GT3/GT3RS Rear Rotor Features • Direct replacement for OEM iron rear rotors—no modifications required• Billet 6061-T6 aluminum hats with anodized finish• Proprietary high-carbon cast-iron rings, cast and machined in the USA• Floating mount system with cadmium-plated drive pins and anti-noise washers• Curved internal vane design improves airflow and cooling• Maintains factory brake balance and ABS efficiency• Fully rebuildable—replace only the iron rings when worn• Sold/priced per pair A2-146 Girodisc Porsche 991 GT3/GT3RS Rear Rotor FAQs: Do these fit both the 991 GT3 and GT3 RS? Yes. They’re designed specifically for OEM iron rotor-equipped 991 GT3 and GT3 RS models and work with stock Brembo calipers. Do I need to change my brake pads or hardware? No. Unlike many aftermarket systems, Girodisc rotors retain full compatibility with OEM pads and hardware. What kind of performance gain should I expect? Expect reduced unsprung mass, better cooling efficiency, and improved pedal consistency under heavy braking conditions. Are these rotors suitable for track use? Absolutely. The floating two-piece construction and curved vane cooling make them ideal for extended track sessions or spirited driving on twisty roads. Bring race-proven braking precision to your Porsche 991 GT3 with Girodisc’s rear rotors—crafted for balance, responsiveness, and reliability at any speed.

Girodisc Corvette C7 Z06, Grand Sport Rear Rotors Engineered for the intense braking demands of high-performance Corvettes, the Girodisc rear rotors for the C7 Z06 and Grand Sport offer a lighter, stronger, and more temperature-stable solution than factory rotors. Each rotor is designed to bolt directly to OEM hubs and calipers, delivering consistent performance and improved cooling for aggressive street or track use. Vehicle Fitment Chevrolet Corvette C7 Z06 (2015–2019)Chevrolet Corvette C7 Grand Sport (2017–2019)Compatible with OEM Brembo rear calipers and hardware. Performance-Built Two-Piece Design The Girodisc system replaces the factory one-piece rotor with a lightweight two-piece assembly featuring a CNC-machined 6061-T6 aluminum hat and a proprietary cast-iron friction ring. The design sheds roughly 8 lbs per corner (24.7 lbs stock vs. 16.6 lbs Girodisc), reducing unsprung and rotational mass for sharper handling and faster acceleration. Internal curved vanes act as centrifugal pumps to draw cooling air through the disc, maintaining stable temperatures even under heavy braking. Features • Direct replacement for OEM rear rotors—no modifications required• 6061-T6 billet aluminum hats with anodized finish• Proprietary high-carbon cast-iron friction 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 internal vanes for efficient airflow and cooling• 8.1 lbs lighter per rotor than OEM for reduced unsprung weight• Fully rebuildable—replace only the rotor rings when worn• Sold/priced per pair Girodisc A2-147 Rear Rotor FAQs: How much lighter are Girodisc rotors than OEM? Each rear rotor saves approximately 8 lbs compared to the factory setup, improving suspension compliance and overall handling response. Do these work with factory brake pads and calipers? Yes. The rotors bolt directly to the OEM hubs and work perfectly with stock or performance pad compounds designed for iron rotors. What improvements will I notice on track? Expect faster brake recovery, consistent pedal feel, and reduced fade during extended high-speed braking thanks to the floating two-piece design and improved cooling. Are these suitable for daily driving? Absolutely. Girodisc rotors maintain smooth, quiet operation while offering race-level performance when pushed hard. Unlock the full braking potential of your C7 Z06 or Grand Sport with Girodisc rear rotors—precision-crafted for lighter weight, better cooling, and true motorsport performance.

A2-148 Girodisc 2pc Rear Brake Rotors (Discontinued Design) FITMENT (REAR): Mercedes GTS Mercedes S63 Discontinued New old stock rotor.  These have the straight grooves as images show, not the new curved grooves.  Final Sale, no returns or exchanges. Competition Motorsport is an authorized dealer for Girodisc products and we are one of the largest stocking dealers in the country.  We ship most Girodisc systems the same or next business day to ensure we meet your delivery deadline. No modifications are necessary, the Girodisc rotors will bolt directly to your Mercedes Benz and work with the original calipers without issue.  The central hat section of the disc is made from 6061-T6 aircraft specification aluminum.  The disc is made from cast iron to the same specification and material as used by professional racing organizations. It is a curved vane design, developed in racing to act as a centrifugal pump to force cooling air through the disc.The rotor and hat have a floating mount system, which utilizes 10 high strength alloy steel drive pins, manufactured by Girodisc to our own specifications and cadmium plated for a long lasting corrosion resistance. These pins take the load from braking actions while maintaining the axial and radial float between the hat and disc. In order to keep the rotors from making noise when cold, the pins are mounted with anti-noise spring washers on the rotor side which allow the rotor to grow with heat expansion but eliminate the rattle and noise associated with floating rotors. This float also allows the rotor to self center between the pads.Once the Girodisc system is in place, simply replace the cast iron rotor when needed. When used with Pagid pads and high-temp racing brake fluid, you have a truly amazing, race-proven solution for your Mercedes Benz.

A2-148 Girodisc Mercedes 360mm Rear Rotors These Girodisc A2-148 2-piece slotted rear rotors directly replace factory 360 mm rear discs on select AMG models listed below. Lighter hats and a floating design improve cooling and serviceability. Vehicle Fitment Mercedes-AMG GT / GT S / GT C / GT R (C190) 2016–2021 – Rear (360 mm) Mercedes-AMG GT 4-Door (X290) 2019–2021 – Rear (360 mm) Mercedes-Benz S63 / S65 AMG (W222) 2014–2020 – Rear (non-CCB) Mercedes-Benz SL63 / SL65 AMG (R231) 2012–2017 – Rear (non-CCB) Mercedes-AMG C63 / C63 S (W205) 2015–2019 – Rear (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 rear applications Slotted face pattern for consistent bite and pad deglazing Floating 2-piece construction reduces heat transfer to hubs High-carbon iron rings with reusable aluminum hats 8–12 lb per-axle weight savings vs. OE (model dependent) No brake bias changes; ABS and stability systems remain stock A2-148 Girodisc Mercedes 360mm Rear Rotors FAQs: Will these work with carbon-ceramic packages? No. These rotors are for iron-brake cars only; models with CCB must use CCB-specific components. Do I need to code or recalibrate anything? No coding required. The rotor dimensions match OEM spec for the listed vehicles. Can I replace just the rings later? Yes. Use D2-123 or the correct rear ring kit specified for your hat/kit. Are parking brake shoes affected? No. The rotor hat retains the OEM drum parking brake interface.

A2-148DS Girodisc Mercedes 360mm Rear Rotors (Dimpled & Slotted) These Girodisc A2-148DS 2-piece dimpled and slotted rear rotors are a direct replacement for factory 360 mm rear rotors on Mercedes performance models. They reduce unsprung weight, enhance cooling, and provide improved pad bite while maintaining street-friendly refinement. Vehicle Fitment Mercedes models matched with 360 mm front / rear rotor setups Performance / AMG systems specifying 360 mm rear rotors Track-Ready Performance with Street Manners High-carbon iron rings paired with reusable aluminum hats deliver strong thermal stability and cost-effective service. The 48 curved vane internal structure promotes airflow and heat management during repeated braking events. Features Direct OEM replacement for 360 mm rear rotors Dimpled & slotted surface for improved bite and pad cleaning 2-piece floating design reduces unsprung weight High-carbon iron rings with reusable aluminum hats 48 curved vanes for efficient cooling Manufactured and assembled in Bellingham, WA A2-148DS Girodisc Mercedes 360mm Rear Rotors FAQs: Do these fit stock calipers? Yes, they are a direct bolt-on with OEM calipers. Are they noisy? No, the floating hardware is engineered for quiet street operation. Can I replace the rings only? Yes, reuse your Girodisc hats with the appropriate rear replacement rings when available. Are they track-capable? Yes, they are designed for repeated heat cycles and performance use.

Girodisc Audi B8, B9 RS5 Rear Rotors Developed for the demanding braking systems found on Audi’s RS5, these Girodisc rear rotors combine precision engineering with reduced unsprung weight for sharper response and superior heat control. The two-piece design enhances durability and cooling efficiency while maintaining full compatibility with factory calipers and ABS systems. Vehicle Fitment Audi RS5 (B8, 2013–2015)Audi RS5 (B9, 2018–2023)Compatible with OEM Brembo rear calipers and factory hardware. Performance Engineering for Track and Street The Girodisc system is a direct bolt-on replacement for the OEM rotors—no modifications required. Each rotor features a lightweight 6061-T6 aluminum hat paired with Girodisc’s proprietary cast-iron friction ring. The floating two-piece design allows for natural expansion under extreme heat, maintaining consistent pad contact and brake feel. Curved internal vanes pull cooling air through the disc, greatly improving temperature management during spirited or track driving. Features • Direct OEM replacement – no modifications required• Billet 6061-T6 aluminum hats with anodized finish• Proprietary cast-iron rings, cast and machined in the USA• Floating mount system with 10 cadmium-plated drive pins• Anti-noise spring washers eliminate rattle and maintain float• Curved vane design increases airflow for optimal cooling• Lightweight two-piece construction reduces unsprung mass• Fully rebuildable—replace only the iron rings when worn• Sold/priced per pair Girodisc A2-149 Rear Rotor FAQs: Are these rotors compatible with both B8 and B9 RS5 models? Yes. Girodisc designed the A2-149 rotors to fit both generations using the OEM Brembo rear brake setup. What benefits will I notice compared to factory rotors? You’ll experience reduced fade, better cooling under sustained braking, and improved suspension response due to lower unsprung weight. Do these rotors work with stock pads? Yes. They’re fully compatible with OEM or performance pad compounds designed for iron rotors. Are they suitable for street use? Absolutely. Girodisc rotors deliver smooth, quiet operation on the street with the thermal stability needed for track sessions. Enhance your Audi RS5’s braking precision and performance with Girodisc rear rotors—lightweight, rebuildable, and purpose-built for consistent, confidence-inspiring stops.

Girodisc Porsche 991, 992 GT3, GT2 RS, GT4 RS PCCB Rear Iron Rotor Conversion Upgrade your Porsche’s carbon-ceramic braking system with Girodisc’s precision-engineered iron rotor conversion. Designed as a direct replacement for OEM PCCB rear rotors, this setup provides improved heat management, reduced long-term costs, and more consistent braking performance under aggressive driving and track conditions. A2-154 Girodisc Porsche Rear Rotor Vehicle Fitment Porsche 911 GT3 (991.1, 991.2, and 992)Porsche 911 GT3 Touring (991 & 992)Porsche 911 GT3 RS (991.1 & 991.2)Porsche 911 GT2 RS (991.2)Porsche 718 Cayman GT4 RS (2022–present)Compatible with OEM PCCB carbon-ceramic brake systems and factory Brembo calipers. Direct Iron Replacement for Porsche PCCB Rotors The Girodisc system bolts directly to factory hubs and calipers with no modifications required. Each rotor features a U.S.-sourced 6061-T6 aluminum hat and Girodisc’s proprietary high-carbon cast-iron friction rings. The floating two-piece design allows thermal expansion without warping, maintaining consistent pad contact and pedal feel. Curved internal vanes act as centrifugal pumps to draw cooling air through the rotor for superior temperature control under repeated hard braking. A2-154 Girodisc Porsche Rear Rotor Features • Direct replacement for OEM PCCB rear rotors – no modifications required• Billet 6061-T6 aluminum hats with hard-anodized finish• Proprietary high-carbon cast-iron rings cast and machined in the USA• Floating mount system with 12 cadmium-plated steel drive pins• Anti-noise spring washers prevent rattle while maintaining float• Curved vane design improves airflow and cooling• Fully rebuildable—replace only the iron rings when worn• Sold/priced per pair Girodisc A2-154 Rear Rotor FAQs: Can I install these without altering the PCCB calipers? Yes. This Girodisc system bolts directly to the OEM hubs and reuses the factory PCCB calipers and hardware—no adapters or spacers needed. Why switch from carbon-ceramic to iron rotors? Iron rotors provide more consistent performance under heat, better pedal feedback, and dramatically lower maintenance costs for frequent track use. Will these affect the car’s ABS or stability control systems? No. Girodisc rotors match OEM dimensions and weight distribution, maintaining full compatibility with Porsche’s electronic systems. Are these suitable for extended track sessions? Absolutely. Girodisc rotors deliver predictable braking feel and exceptional thermal stability during long, high-load track events when paired with performance pads and fluid. Upgrade your Porsche’s PCCB system with Girodisc’s rear iron rotor conversion—engineered for the perfect blend of control, serviceability, and motorsport-grade performance.

Girodisc Porsche 380mm Rear Rotors Upgrade your Porsche’s braking system with Girodisc’s 380mm rear iron rotors, engineered as a direct replacement for OEM carbon-ceramic discs. This setup offers superior heat capacity, consistent braking performance, and reduced replacement costs, all while maintaining OEM fitment and balance for high-performance driving. Girodisc A2-155 Rotor Vehicle Fitment Porsche 911 Turbo / Turbo S (991.1 & 991.2)Porsche 911 GT3 (991.1 & 991.2)Porsche 911 GT3 RS (991 Series)Porsche 911 GT2 RS (991.2)Compatible with OEM carbon-ceramic brake systems and factory Brembo calipers. Direct Replacement Iron Rotor System The Girodisc system bolts directly to the factory hubs and calipers—no modifications necessary. Each rotor features a CNC-machined 6061-T6 aluminum hat mated to Girodisc’s proprietary cast-iron friction ring. The floating two-piece design allows for expansion under heat without distortion, ensuring even pad wear and consistent pedal feel. Curved internal vanes act as centrifugal pumps, drawing cooling air through the disc for excellent thermal control. Girodisc A2-155 Rotor Features • Direct replacement for OEM PCCB 380 mm rear rotors• Billet 6061-T6 aluminum hats with hard-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 while allowing thermal float• Curved vane design improves airflow and heat dissipation• Fully rebuildable—replace only the iron rings when worn• Sold/priced per pair Girodisc A2-155 Rear Rotor FAQs: Can these rotors replace the OEM PCCB carbon-ceramic discs? Yes. The A2-155 rotors are a direct bolt-on replacement designed to fit factory hubs and calipers without adapters. How do iron rotors change braking feel? They offer a firmer, more predictable pedal with better modulation and heat control during extended sessions, making them ideal for track use. Are they suitable for daily driving? Absolutely. Despite their race-bred design, Girodisc rotors operate quietly and smoothly on the street while maintaining superb durability. What maintenance advantages do these have over PCCB? Iron rotors are rebuildable and far more affordable to service—simply replace the friction rings when worn rather than the entire assembly. Enhance your Porsche’s stopping power with Girodisc 380 mm rear rotors—engineered for the perfect balance of reliability, performance, and precision braking control.

Girodisc Porsche 390mm Rear Rotors Upgrade your Porsche’s braking system with Girodisc’s 390mm rear iron rotors, designed as a direct replacement for OEM PCCB (carbon-ceramic) discs. This conversion provides improved heat capacity, consistent braking performance, and drastically lower maintenance costs—all while maintaining factory fitment and ABS compatibility. Direct Iron Replacement for Porsche PCCB Rotors The Girodisc system bolts directly to the car and works seamlessly with OEM calipers and pads. Each rotor features a CNC-machined 6061-T6 aluminum hat and Girodisc’s proprietary high-carbon cast iron friction rings, all made in the USA. The floating two-piece design allows for controlled expansion under heat, preserving pad contact and consistent pedal feel. The curved vane design acts as a centrifugal pump, pulling cooling air through the disc for maximum thermal efficiency during hard use. A2-156 Girodisc Porsche 390mm Rear Rotor Features • Direct replacement for OEM Porsche PCCB 390mm rear rotors• Billet 6061-T6 aluminum hats with hard-anodized finish• Proprietary high-carbon cast iron rings cast and machined in the USA• Floating mount system with 12 cadmium-plated steel drive pins• Anti-noise spring washers eliminate rattle while maintaining float• Curved internal vanes maximize airflow and cooling• Fully rebuildable—replace only the iron rings when worn• Sold/priced per pair A2-156 Girodisc Porsche 390mm Rear Rotor FAQs: Can these rotors replace Porsche PCCB carbon-ceramic discs directly? Yes. The Girodisc 390mm system is a direct bolt-on replacement designed to work with the original PCCB calipers and hardware. What are the advantages of switching to iron rotors? Iron rotors provide more consistent performance at high temperatures, improved pedal feel, and drastically reduced replacement cost compared to OEM carbon-ceramics. Do these rotors affect the car’s ABS or stability systems? No. Girodisc rotors maintain factory dimensions and mass distribution, ensuring full electronic compatibility. How do they perform on track? Expect stable pedal feedback, greater resistance to fade, and predictable braking behavior throughout long sessions, especially when paired with performance pads and high-temperature fluid. Experience superior control and serviceability with Girodisc’s 390mm rear iron rotors—built for Porsche performance enthusiasts who demand reliability, precision, and track-ready braking confidence.

Girodisc McLaren 380mm Rear Rotors Replace your factory carbon-ceramic rotors with Girodisc’s precision-engineered 380mm rear iron rotors for McLaren models. Designed as a direct bolt-on upgrade, these lightweight two-piece rotors deliver superior heat management, lower operating costs, and race-proven reliability—perfect for high-performance street driving or track duty. Direct Replacement for OEM Carbon-Ceramic Rotors The Girodisc system installs directly onto the McLaren’s factory hubs and calipers—no modifications required. Each rotor features a CNC-machined 6061-T6 aluminum hat and a proprietary high-carbon cast-iron friction ring. The floating two-piece design allows for controlled thermal expansion, maintaining consistent pad contact under extreme braking loads. The curved vane design functions as a centrifugal pump, drawing cooling air through the disc to regulate temperatures lap after lap. Features • Direct replacement for OEM 380mm carbon-ceramic rear rotors• 6061-T6 billet aluminum hats with hard-anodized finish• Proprietary high-carbon cast-iron friction rings poured and machined in the USA• Floating mount system with 12 cadmium-plated drive pins• Anti-noise spring washers eliminate rattle while maintaining float• Curved internal vanes provide superior airflow and cooling• Fully rebuildable—replace only the iron rings when worn• Sold/priced per pair Vehicle Fitment McLaren 650S (2014–2017)McLaren 675LT (2016–2017)McLaren 570S / 540C / 600LT (2015–2021)McLaren 720S (2018–2023)Compatible with OEM carbon-ceramic braking systems and Brembo rear calipers. Girodisc A2-159 Rear Rotor FAQs: Can these rotors replace McLaren’s OEM carbon-ceramic setup? Yes. Girodisc designed this kit as a direct iron conversion that reuses the original calipers, hubs, and mounting hardware. What benefits do iron rotors provide over CCM rotors? Iron rotors offer greater heat capacity, improved modulation, and much lower replacement costs while maintaining excellent street manners. Are these rotors compatible with factory ABS and traction control? Absolutely. Girodisc maintains OEM dimensions to ensure perfect compatibility with McLaren’s advanced brake electronics. How do these perform under extended track use? Expect consistent pedal feel, reduced fade, and stable braking throughout long sessions—especially when paired with high-temperature pads and fluid. Enhance your McLaren’s braking consistency and reliability with Girodisc’s 380mm rear rotors—precision-built for performance, endurance, and confidence at every corner.

Girodisc A2-161 Rear Two-Piece Rotors (Discontinued Design) Fitments (REAR): Ferrari 488 Ferrari 488 Pista Ferrari F8 Discontinued New old stock rotor.  These have the straight grooves as images show, not the new curved grooves.  Final Sale, no returns or exchanges. Competition Motorsport is an authorized dealer for Girodisc products and we are one of the largest stocking dealers in the country. We ship most Girodisc systems the same or next business day to ensure we meet your delivery deadline. The Girodisc system is a direct replacement for the OE disc. No modifications are necessary. The disc will bolt directly to the car and work with OE calipers perfectly. The central hat section of our rotor is made from strictly U.S. sourced 6061-T6 aircraft specification aluminum. The disc is made from our own proprietary cast iron, poured in the USA and machined from start to finish in house at Girodisc. The rotor utilizes a curved vane design, developed in racing to act as a centrifugal pump to force cooling air through the disc. The rotor and hat have a floating mount system, which utilizes ten high strength alloy steel drive pins, manufactured by Girodisc in the USA to our own specifications and cadmium plated for a long lasting corrosion resistance. These pins take the load from braking while maintaining the axial and radial float between the hat and disc. The pins are secured by Class 12.9 cap screws with hardened washers. In order to keep the rotors from making noise when cold, the pins are mounted with anti-noise spring washers on the rotor side which allow the rotor to grow with heat expansion but eliminate the rattle and noise associated with floating rotors. This float also allows the rotor to self center between the pads. Once the Girodisc system is in place, simply replace the cast iron rotor when needed. Sold/priced in pairs

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. 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 Vehicle Fitment 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: Do these fit all Ferrari 360 models? Yes. They’re compatible with all 360 variants, including the Modena, Spider, and Challenge Stradale, using factory calipers and hardware. 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 Shelby GT350 Rear Rotors Upgrade your Shelby GT350’s braking performance with Girodisc’s lightweight, two-piece rear rotors. Designed as a direct replacement for the factory rotors, these precision-engineered components deliver better cooling, reduced unsprung weight, and superior durability—perfect for both high-performance street driving and demanding track sessions. Engineered for Track Precision The Girodisc system bolts directly to your GT350’s OEM calipers and hubs—no modifications required. Each rotor features a CNC-machined 6061-T6 aluminum hat paired with Girodisc’s proprietary high-carbon cast iron ring. The floating two-piece design allows the rotor to expand under heat without distortion, maintaining consistent pad contact and brake feel. The curved vane internal design acts as a centrifugal pump, forcing cooling air through the rotor for optimal thermal management during extended high-speed braking. Features • Direct replacement for OEM Shelby GT350 rear rotors• Lightweight 6061-T6 billet aluminum hats with anodized finish• Proprietary high-carbon cast iron rings poured and machined in the USA• Floating mount system with cadmium-plated drive pins• Anti-noise spring washers maintain float and eliminate rattle• Curved vane design maximizes airflow and cooling• Fully rebuildable—replace only the iron rings when worn• Sold/priced per pair Vehicle Fitment Ford Mustang Shelby GT350 (2015–2020)Ford Mustang Shelby GT350R (2015–2020)Compatible with OEM Brembo rear calipers and hardware. Girodisc A2-162 Rear Rotor FAQs: Do these fit both the GT350 and GT350R models? Yes. These Girodisc rotors are a direct replacement for both GT350 and GT350R rear systems using factory Brembo calipers. What performance benefits can I expect? You’ll notice improved cooling efficiency, lighter rotational mass for faster suspension response, and more consistent braking under heat compared to the OEM rotors. Can I use my stock brake pads with these rotors? Absolutely. Girodisc rotors are fully compatible with factory pads or upgraded track compounds for maximum versatility. Are Girodisc rotors quieter than typical aftermarket rotors? Yes. The anti-noise spring washers prevent rattle, allowing the rotors to float silently even under aggressive braking conditions. Bring championship-level braking performance to your Shelby GT350 with Girodisc’s precision-built rear rotors—engineered for lighter weight, cooler operation, and total track confidence.

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.