Girodisc

Girodisc D2-220 Replacement Rotor Rings (380mm) Girodisc replacement rotor rings are direct replacements for the iron discs on your Girodisc A2-220 380mm two-piece rotors, with no modifications necessary. New cap screws and washers are included with these replacement rotors. We do not recommend re-using the old hardware. (This kit is contains two cast-iron discs and associated hardware. No aluminum center hat.) The replacement rotor rings and hat mount together through a floating mount system which utilizes 8-10 high strength alloy steel drive pins manufactured by Girodisc in the USA and are cadmium plated for corrosion resistance. The alloy drive pins transfer the load from braking 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. Rotor ring-only replacement helps to minimize costs and deliver outstanding performance. Sold/priced per pair.

D2-228 Girodisc Replacement Rear Rotor Ring Kit Fits Lamborghini Huracán Super Trofeo only REPLACEMENT ROTOR RINGS AND HARDWARE ONLY. DOES NOT INCLUDE ALUMINUM HATS. Competition Motorsport is an Authorized dealer for Girodisc products and we are one of the largest stocking dealers in the country.  We ship most products same or next business day to ensure we meet your delivery deadline. The Girodisc replacement rotor system is a direct rotor disc replacement for the OEM 2-piece hat and rotor and no modifications are necessary.   The rotor and hat mount together through a floating mount system which utilizes 8-10 high strength alloy steel drive pins manufactured by Girodisc in the USA to our own specifications and are cadmium plated for corrosion resistance.  The alloy drive pins transfer the load from braking 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 2-piece Girodisc design allows for rotor only replacement to minimize replacement costs and deliver outstanding performance and cooling. Sold/Priced per pair.

REPLACEMENT ROTOR RINGS ONLY. INCLUDES NEW INSTALLATION HARDWARE. DOES NOT INCLUDE ALUMINUM HATS. Competition Motorsport is an authorized dealer for Girodisc products. As one of the largest stocking dealers in the country, we ship most Girodisc products the same or next business day to ensure we meet your delivery deadline. These Girodisc replacement rotor rings for the Nissan R35 GT-R are Girodisc's updated variant. If you're not sure these are correct for your Girodisc rotors, please contact us. They the are direct replacements for the iron discs on your Girodisc two-piece rotors, and no modifications are necessary. New cap screws and washers are included with these replacement rotors. We do not recommend re-using the old hardware. These rings will not work with factory center hats. They are designed to work with Girodisc hats only. The replacement rotor rings and hat mount together through a floating mount system which utilizes 8-10 high strength alloy steel drive pins manufactured by Girodisc in the USA to 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 rotor ring-only replacement to minimize replacement costs and deliver outstanding performance and cooling. Sold/priced per pair.

REPLACEMENT ROTOR RINGS ONLY. INCLUDES NEW INSTALLATION HARDWARE. DOES NOT INCLUDE ALUMINUM HATS. Competition Motorsport is an authorized dealer for Girodisc products. As one of the largest stocking dealers in the country, we ship most Girodisc products the same or next business day to ensure we meet your delivery deadline. These Girodisc replacement rotor rings are direct replacements for the iron discs on your Girodisc two-piece rotors, and no modifications are necessary. New cap screws and washers are included with these replacement rotors. We do not recommend re-using the old hardware. The replacement rotor rings and hat mount together through a floating mount system which utilizes 8-10 high strength alloy steel drive pins manufactured by Girodisc in the USA to 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 rotor ring-only replacement to minimize replacement costs and deliver outstanding performance and cooling. Sold/priced per pair.

D2-242 Girodisc Rear Replacement Rotor Rings Fitment: Chevrolet Corvette C8 Z51 REPLACEMENT ROTOR DISCS ONLY. INCLUDES NEW INSTALLATION HARDWARE. DOES NOT INCLUDE ALUMINUM HAT. Competition Motorsport is an authorized dealer for Girodisc products and we are one of the largest stocking dealers in the country.  We ship most products same or next business day to ensure we meet your delivery deadline. The Girodisc replacement rotor system is a direct rotor disc replacement for the Girodisc two-piece hat and rotor and no modifications are necessary.   The rotor and hat mount together through a floating mount system which utilizes 8-10 high strength alloy steel drive pins manufactured by Girodisc in the USA to 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 rotor only replacement to minimize replacement costs and deliver outstanding performance and cooling. Sold/priced per pair.

D2-272 Girodisc Rear Replacement Rotor Rings REPLACEMENT ROTOR DISCS ONLY, DOES NOT INCLUDE ALUMINUM HAT. Competition Motorsport is an Authorized dealer for GiroDisc products and we are one of the largest stocking dealers in the country.  We ship most products same or next business day to ensure we meet your delivery deadline. The GiroDisc replacement rotor system is a direct rotor disc replacement for the Giro Disc 2-piece hat and rotor and no modifications are necessary.   The rotor and hat mount together through a floating mount system which utilizes 8-10 high strength alloy steel drive pins manufactured by GiroDisc in the USA to our own specifications and are cadmium plated for corrosion resistance.  The alloy drive pins transfer the load from the brake action while maintaining the axial and radial float between the disc rotor and hat.  The pins are secured by 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 2-piece GiroDisc design allows for rotor only replacement to minimize replacement costs and deliver outstanding performance and cooling. Sold/Priced per pair.

D2-282 Girodisc 370mm Rear Replacement Rings Price: $504.00 Rings only, sold as a pair with new hardware. Reuse your existing Girodisc aluminum hats. These rings are engineered for Girodisc hats only and will not fit OE or other aftermarket hats. Vehicle Fitment BMW G87 M2 – Rear (for A2-282 kits) BMW G80/G81 M3 – Rear (for A2-282 kits) BMW G82/G83 M4 – Rear (for A2-282 kits) Easy Service, Consistent Performance High-carbon iron rings with 48 curved vanes provide reliable cooling and durability. New pins, clips, and Belleville washers restore proper float and clamping force. Features Replacement rings only; includes hardware Direct fit for Girodisc A2-282 rear rotor kits High-carbon iron; USA-poured and machined 48-vane internal design for airflow Sold/priced per pair D2-282 FAQs Minimum thickness? Replace at 22 mm or sooner if a crack reaches the outer edge. Do I reuse hardware? No — always install the supplied new hardware and torque per instructions. Do I need to re-bed pads? Yes — re-bed after ring installation to stabilize the friction layer. Related Products A2-282 Girodisc BMW G8X M2, M3, M4 370mm Rear Rotors A1-282 Girodisc BMW G8X M2, M3, M4 380mm Front Rotors D1-282 Girodisc BMW G8X 380mm Front Replacement Rings

D2-307 Girodisc Front Rotor Rings  REPLACEMENT ROTOR RINGS ONLY. INCLUDES NEW INSTALLATION HARDWARE. DOES NOT INCLUDE ALUMINUM HATS. Competition Motorsport is an authorized dealer for Girodisc products. As one of the largest stocking dealers in the country, we ship most Girodisc products the same or next business day to ensure we meet your delivery deadline. These Girodisc replacement rotor rings are direct replacements for the iron discs on your Girodisc two-piece rotors, and no modifications are necessary. New cap screws and washers are included with these replacement rotors. We do not recommend re-using the old hardware. These rings will not work with factory center hats. They are designed to work with Girodisc hats only. The replacement rotor rings and hat mount together through a floating mount system which utilizes 8-10 high strength alloy steel drive pins manufactured by Girodisc in the USA to 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 rotor ring-only replacement to minimize replacement costs and deliver outstanding performance and cooling. Sold/priced per pair.

D2-307 Girodisc Toyota GR Supra, BMW 345mm Rear Replacement Rings Price: $780.00 Rings only, sold as a pair with new hardware. Reuse your existing Girodisc aluminum hats. Designed exclusively for Girodisc hats; not compatible with OE or other aftermarket hats. Vehicle Fitment Toyota GR Supra 3.0 – Rear (for A2-307 kits) BMW G-chassis with 345 mm rear rotors – Rear (for A2-307 kits) Serviceable Two-Piece Design High-carbon iron rings with curved vanes deliver reliable cooling and durability. New drive pins, clips, and Belleville washers restore proper float and clamp force when refreshing your rotors. Features Replacement rings only; includes hardware Direct fit for Girodisc A2-307 rear rotor kits High-carbon iron; USA-poured and machined Curved-vane internal design for airflow Sold/priced per pair D2-307 FAQs Minimum thickness? Follow A2-307 service spec (22 mm) or replace sooner if any crack reaches the edge. Hardware reuse? Use the new hardware supplied; do not reuse worn pins/springs. Related Products A2-307 Girodisc Toyota GR Supra, BMW 345mm Rear Rotors A1-307 Girodisc Toyota GR Supra, BMW 348mm Front Rotors D1-307 Girodisc Toyota GR Supra, BMW 348mm Front Replacement Rings

D2-318 Girodisc Cadillac CT4-V Blackwing Rear Replacement Rings D2-318 rear replacement rings are sold in pairs with new hardware. Reuse your existing Girodisc aluminum hats. Rings are designed exclusively for Girodisc hats and will not fit OE or other aftermarket hats. D2-318 Vehicle Fitment Cadillac CT4-V Blackwing – Rear (for A2-318 kits) Cost-Effective Service High-carbon iron rings with curved vanes provide consistent performance under repeated braking. New drive pins, clips, and Belleville washers restore proper float and clamping force. Features Replacement rings only; includes hardware Direct fit for Girodisc A2-318 rear rotor kits High-carbon iron; USA-poured and machined Curved vane internal design for cooling airflow Sold/priced per pair D2-318 Girodisc Cadillac Rear Replacement Rings FAQs What’s the recommended minimum thickness? Replace rear rings at 26 mm or sooner if any crack reaches the outer edge. Do I need to re-bed pads? Yes — re-bed after ring installation for optimal friction transfer. Can I mix these with OE front rotors? Yes, but best results come from matching front and rear Girodisc assemblies. Hardware reuse? Use the supplied new hardware; do not reuse worn pins/springs. Related Products A2-318 Girodisc Cadillac CT4-V Blackwing Rear Rotors A1-318 Girodisc Cadillac CT4-V Blackwing Front Rotors D1-066 Girodisc 380×34 Front Replacement Rings

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

D2-322 Girodisc BMW G8X Iron Conversion Rear Replacement Rings Price: $880.00 D2-322 are rear rings only for the G8X rear iron conversion (A2-322). Sold in pairs with new hardware; reuse your existing Girodisc aluminum hats. Rings are designed exclusively for Girodisc hats. Vehicle Fitment BMW G80/G81 M3 with CCB – Rear (for A2-322 kits) BMW G82/G83 M4 with CCB – Rear (for A2-322 kits) Cost-Effective Refresh High-carbon iron rings with curved vanes provide consistent braking under repeated heat cycles. New drive pins, clips, and Belleville washers restore proper float and clamping force. Features Replacement rings only; includes hardware Direct fit for Girodisc A2-322 rear rotor kits High-carbon iron; USA-poured and machined Curved-vane internal design for airflow Sold/priced per pair D2-322 FAQs Minimum thickness? Replace at 26 mm or sooner if any crack reaches the outer edge. Can I use OE hats? No — these rings are only for Girodisc hats. Do I need to re-bed pads? Yes — re-bed after ring replacement to stabilize the friction layer. Hardware reuse? Use the supplied new hardware; do not reuse worn pins/springs. Related Products A2-322 Girodisc BMW G8X M3, M4 Rear Iron Rotor Conversion A1-322 Girodisc BMW G8X M3, M4 Front Iron Rotor Conversion D1-220 Girodisc BMW F8X/G8X 400mm Front Replacement Rings

Girodisc Nissan Skyline GT-R (R32 V-Spec, R33, R34) Rear Replacement Rings These Girodisc D2-357 rear replacement rings are sold in pairs and include all necessary replacement hardware. They are designed to work exclusively with Girodisc aluminum hats. The hats are the only components that should be reused during installation. These rings are not compatible with OEM or other aftermarket hats. Vehicle Fitment • Nissan Skyline GT-R R32 V-Spec (Rear)• Nissan Skyline GT-R R33 (All models – Rear)• Nissan Skyline GT-R R34 (All models – Rear) Serviceable Design, Track-Ready Materials Machined from proprietary high-carbon iron castings formulated to Girodisc’s specifications, these replacement rings deliver excellent thermal stability and wear resistance under high-performance driving conditions. The 2-piece rotor design allows you to refresh the braking surface while retaining the original Girodisc hats, making maintenance both cost-effective and performance-oriented. Features • Sold in pairs with replacement hardware• Designed exclusively for Girodisc aluminum hats• Proprietary high-carbon iron rings for consistent braking• Cost-effective way to refresh worn rotors• High-quality construction made in the USA Girodisc Nissan Skyline GT-R (R32 V-Spec, R33, R34) Rear Replacement Rings FAQs: Do these include new hardware? Yes, all necessary replacement hardware is included with the rings. Can these rings be used with OEM hats? No, they are only compatible with Girodisc aluminum hats for proper fit and safety. Are these rings sold individually? No, they are sold in pairs. What is the correct part number for the rear replacement rings? D2-357 is the part number for Nissan Skyline GT-R rear applications. Related Products Girodisc A2-357 Rear Rotors – Nissan Skyline GT-R (R32 V-Spec, R33, R34) Girodisc D1-357 Front Replacement Rings – Nissan Skyline GT-R (R32 V-Spec, R33, R34) Girodisc A1-357 Front Rotors – Nissan Skyline GT-R (R32 V-Spec, R33, R34)

Girodisc Replacement Rear Rotor Rings for Lotus Emira D2-388 Vehicle fitment • 2022+ Lotus Emira (rear axle) When the time comes to service your Lotus Emira’s rear brakes, the Girodisc D2-388 replacement rotor rings restore full performance without the cost of replacing the complete assembly. Designed to mount directly onto your existing A2-388 hats, these rings deliver the same high-carbon iron strength, curved-vane cooling, and track-ready performance as your original Girodisc setup. Durable, high-performance replacement rings Each ring is machined from Girodisc’s proprietary high-carbon iron alloy, engineered for thermal stability and durability under repeated heavy braking. The 48 curved internal vanes work like a centrifugal pump to draw air through the hub, keeping temperatures down during demanding street or track use. Because the hats are fully reusable, you only need to replace the rings — saving money while keeping your braking system race-ready. D2-388 Features • Direct replacement rings for Girodisc A2-388 rear rotor assemblies• 350 mm diameter × 32 mm thickness• Proprietary high-carbon iron metallurgy• 48 curved-vane internal cooling design• Designed and manufactured in-house in Bellingham, WA• Reuses your existing Girodisc aluminum hats and hardware• Recommended minimum thickness: 30 mm Note: These are rotor rings only. Hats and hardware are not included; designed for use with Girodisc A2-388 hats. Frequently Asked Questions Do these come with hats or hardware? No. The D2-388 kit includes rotor rings only. You’ll reuse your Girodisc A2-388 hats and hardware. How do I know when it’s time to replace the rings? Replace them when thickness reaches 30 mm or when cracks extend to the edge of the ring. Are these rings track-capable? Absolutely. They are built to handle repeated heat cycles while remaining compliant for street driving. Do I need special tools for installation? Standard shop tools are sufficient, but careful torqueing is required. Professional installation is recommended if you are not experienced with brake assembly. Related Products Girodisc A1-388 Front Rotors – Lotus Emira Girodisc A2-388 Rear Rotors – Lotus Emira Girodisc D1-388 Replacement Front Rotor Rings Lotus Emira Rear Caliper Rebuild Kit Maintain your Emira’s rear braking performance and keep your costs down with Girodisc D2-388 replacement rotor rings.

FITS: BREMBO / STOPTECH 332x32mm BIG BRAKE KITS REPLACEMENT ROTOR DISCS ONLY, DOES NOT INCLUDE ALUMINUM HAT. Competition Motorsport is an Authorized dealer for GiroDisc products and we are one of the largest stocking dealers in the country.  We ship most products same or next business day to ensure we meet your delivery deadline. The GiroDisc replacement rotor system is a direct rotor disc replacement for the GiroDisc 2-piece hat and rotor and no modifications are necessary.   The rotor and hat mount together through a floating mount system which utilizes 8-10 high strength alloy steel drive pins manufactured by GiroDisc in the USA to our own specifications and are cadmium plated for corrosion resistance.  The alloy drive pins transfer the load from the brake action while maintaining the axial and radial float between the disc rotor and hat.  The pins are secured by 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 2-piece GiroDisc design allows for rotor only replacement to minimize replacement costs and deliver outstanding performance and cooling. Sold/Priced per pair.

FITS: BREMBO / STOPTECH 355x32mm BIG BRAKE KITS FITMENT (FRONT): Ford Mustang FR500S Brembo Big Brake Kit 355mm x 32mm Stoptech Big Brake Kit 355mm x 32mm Competition Motorsport is an authorized dealer for Girodisc products and we are one of the largest stocking dealers in the country.  We ship most products same or next business day to ensure we meet your delivery deadline. REPLACEMENT ROTOR RINGS ONLY. Need new rings for your Girodisc (or Brembo or Stoptech) two-piece rotors? We've got them. Replacement rings come complete with new hardware and full instructions for re-assembly. Or, if you like, you can send us the hats and we will do all the re-assembly for only the cost of shipping.  This service is available for the life of your rotors.Price is for a pair of rings and two hardware kits.