girodisc

D1-308DS Girodisc Mercedes 360mm Front Replacement Rings (Dimpled & Slotted) These Girodisc D1-308DS front replacement rings are sold in pairs and include replacement hardware. They are designed for use with existing Girodisc aluminum hats and are not compatible with OEM or other aftermarket hats. Vehicle Fitment Mercedes models with Girodisc 360 mm front rotor kits Not for 370 / 380 / 390 mm systems Refresh Your Two-Piece Rotor Setup Dimpled and slotted high-carbon iron rings deliver strong initial pad bite and stable performance under heat. Reusing your Girodisc hats keeps service costs down while maintaining braking performance. Features Replacement rings only; reuse Girodisc aluminum hats Sold in pairs with replacement hardware Dimpled & slotted surface for bite and gas evacuation High-carbon iron with 48 curved vanes for cooling Cost-effective rotor refresh solution D1-308DS Girodisc Mercedes 360mm Front 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. Can I use OEM hats? No, these rings are only compatible with Girodisc hats. Are these track-ready? Yes, they offer excellent cooling and bite for performance driving. Related Products A1-308DS Girodisc Mercedes 360mm Front Rotors (Dimpled & Slotted) A2-148DS Girodisc Mercedes 360mm Rear Rotors (Dimpled & Slotted) D1-308DS Girodisc Mercedes 360mm Front Replacement Rings (Dimpled & Slotted) D2-123DS Girodisc Mercedes 360mm Rear Replacement Rings (Dimpled & Slotted)

Girodisc Audi with Brembo 18Z Front Replacement Rings D1-309 are rings only, sold in pairs with new hardware. Reuse your existing Girodisc aluminum hats. These rings are engineered exclusively for Girodisc hats and are not compatible with OE or other aftermarket hats. Vehicle Fitment Audi S4 (B5) – Front, with Brembo 18Z caliper conversion (for A1-309 kits) Audi A6 (C5) 2.7T – Front, with Brembo 18Z caliper conversion (for A1-309 kits) Audi Allroad (C5) 2.7T – Front, with Brembo 18Z caliper conversion (for A1-309 kits) Fitment note: These replacement rings are for Girodisc hats only. Cost-Effective Service High-carbon iron rings with curved vanes maintain cooling performance and thermal stability under repeated stops. New drive pins, clips, and Belleville washers restore the floating interface and clamp force. Features Replacement rings only; includes fresh hardware Direct fit for Girodisc A1-309 front rotor kits High-carbon iron; USA-poured and machined Curved vane internal design for airflow Sold/priced per pair D1-309 FAQs When should rings be replaced? At Girodisc’s service thickness or if a crack propagates to the outer edge. Do I need to re-bed pads? Yes — perform a proper bed-in after ring replacement. Torque specs? Use the torque/sequence included with the ring hardware kit. Related Products A1-309 Girodisc Audi with Brembo 18Z Front Rotors

D1-310 Girodisc Mercedes A45, CLA45, GLA45 Front Replacement Rings D1-310 are front rings only, sold in pairs with fresh hardware. Reuse your existing Girodisc aluminum hats. Rings are engineered exclusively for Girodisc hats and are not compatible with OE or other aftermarket hats. Vehicle Fitment Mercedes-AMG A45 (W176) – Front (for A1-310 kits) Mercedes-AMG CLA45 (C117) – Front (for A1-310 kits) Mercedes-AMG GLA45 (X156) – Front (for A1-310 kits) Service-Friendly Refresh High-carbon iron rings with curved vanes maintain cooling performance. The included drive pins, clips, and Belleville washers restore proper float and clamp force. Features Replacement rings only; includes hardware For use with Girodisc hats (A1-310 front rotor kits) High-carbon iron, USA-poured and machined Curved vane internal geometry for airflow D1-310 FAQs Minimum thickness or crack criteria? Replace if below Girodisc’s recommended service thickness or if a crack reaches the outer edge of the ring. Bed-in required? Yes — follow a standard pad/rotor bedding procedure to stabilize the friction layer. Hardware reuse? New hardware is included; do not reuse old pins/springs. Torque spec? Follow Girodisc’s supplied instructions for fastener torque and sequence. Related Products A1-310 Girodisc Mercedes A45, CLA45, GLA45 Front Rotors A2-044 Girodisc Mercedes A45, CLA45, GLA45 Rear Rotors D2-044 Girodisc Mercedes A45, CLA45, GLA45 Rear Replacement Rings

D1-311 Girodisc Audi B9 S4, S5, SQ5 Front Replacement Rings These D1-311 front replacement rings are sold in pairs with new hardware. Reuse your existing Girodisc aluminum hats. Rings are engineered exclusively for Girodisc hats and will not fit OE or other aftermarket hats. Vehicle Fitment Audi S4 (B9) – Front (for A1-311 kits) Audi S5 (B9) – Front (for A1-311 kits) Audi SQ5 (B9) – Front (for A1-311 kits) Service-Friendly Refresh High-carbon rings with curved vanes manage heat under repeated stops. New drive pins, clips, and Belleville washers restore the floating interface. Features Replacement rings only; includes hardware For Girodisc A1-311 front rotor kits High-carbon iron, machined in the USA Curved vane geometry for airflow D1-311 FAQs When to replace? Replace at the recommended service thickness or if a crack reaches the outer edge. Torque specs? Follow the included Girodisc instructions for torque and sequence. Pad rebedding? Yes—rebed pads after ring replacement. Related Products A1-311 Girodisc Audi B9 S4, S5, SQ5 Front Rotors A2-130 Girodisc Audi B8/B9 Rear Rotors D2-130 Girodisc Audi 330mm Rear Replacement Rings

Girodisc D1-319 Front Replacement Rotor Rings Corvette C8 Z06 • For Girodisc 2-Piece Front Rotors (Non-Z07) Refresh your braking performance with Girodisc D1-319 Front Replacement Rotor Rings for the 2023+ Chevrolet Corvette C8 Z06. Designed as direct replacements for your existing Girodisc two-piece front rotors, these rings restore consistent, track-ready stopping power. Key Features Direct-fit (Non-Z07): Replaces worn rotor rings on Girodisc two-piece front rotors for the C8 Z06. Track-ready construction: Proprietary high-carbon cast iron for excellent thermal capacity and stability under extreme heat. Floating mount design: Stainless hardware and alloy drive pins allow axial float to reduce stress, noise, and warping. Efficient cooling: 72 curved vanes act as a centrifugal pump to move air and manage heat more effectively than solid rotors. Hardware included: Ships with new bolts and mounting hardware for a straightforward install. Perfect For Track days and HPDE High-performance street driving C8 Z06 owners running Girodisc two-piece front rotors Replacing worn rings without buying new rotor hats What's Included (2) Front Girodisc D1-319 rotor rings All required mounting hardware Fitment 2023+ Chevrolet Corvette C8 Z06 with Girodisc two-piece front rotors (non-Z07 brake package) Not compatible with OEM one-piece or carbon-ceramic setups. Why Girodisc Girodisc manufactures premium motorsport and high-performance braking components in the USA. Whether you’re chasing lap times or driving spiritedly on the street, these rings deliver consistent, confidence-inspiring braking. SKU: D1-319

D1-320 Girodisc Corvette C8 398mm Front Replacement Rings These Girodisc D1-320 398 mm front replacement rings are sold in pairs and include replacement hardware. They are designed for use with existing Girodisc aluminum hats on Corvette C8 front applications and are not compatible with OEM or other aftermarket hats. Vehicle Fitment Chevrolet Corvette C8 Z06 (Front – 398 mm Girodisc kits) Chevrolet Corvette C8 E-Ray (Front – 398 mm Girodisc kits) Serviceable Front Rotor Design Machined from high-carbon iron to Girodisc specifications, the rings use a 48 curved vane design for strong airflow and cooling. Reuse your hats and hardware for cost-effective service. Features Replacement rings only; reuse Girodisc aluminum hats Sold in pairs with replacement hardware High-carbon iron rings for consistent braking 48 curved vanes for effective cooling Direct fit for Girodisc A1-320 front rotor kits D1-320 Girodisc Corvette C8 398mm Front 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. Is this suitable for track use? Yes, these rings are designed for repeated 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

D1-336 Girodisc Audi / Lamborghini Front Replacement Rings The Girodisc D1-336 Front Replacement Rings are designed for use with A1-336 Audi / Lamborghini Front Iron Conversion rotor kits. These replacement rings allow you to reuse the Girodisc aluminum hats, keeping long-term brake costs low without sacrificing performance. Vehicle Fitment Audi RS models equipped with 380 mm Girodisc A1-336 iron conversion kits Lamborghini Huracán and similar platforms with Girodisc A1-336 front iron conversion Rings only – designed exclusively for Girodisc hats Serviceable Two-Piece Design These replacement rings are machined from proprietary high-carbon iron and feature directional curved vanes to maximize airflow and cooling. Each pair includes new floating hardware for a complete service solution. Features Replacement rings only; reuse your Girodisc A1-336 aluminum hats High-carbon iron construction with directional curved vanes Includes new floating hardware Direct fit for Girodisc A1-336 kits Manufactured and machined in the USA D1-336 Girodisc Audi / Lamborghini Front Replacement Rings FAQs: Do these include hats? No, these are rings only. Reuse your existing A1-336 Girodisc aluminum hats. Are these OEM compatible? No, they are designed only for Girodisc A1-336 rotor kits. Do they come with hardware? Yes, new floating hardware is included with each set of rings. When should I replace the rings? Replace at or below minimum thickness, or if cracks reach the outer edge during inspection. Related Products A1-336 Girodisc Audi / Lamborghini Front Iron Conversion

Girodisc Nissan Skyline GT-R (R32 V-Spec, R33, R34) Front Replacement Rings These replacement rings are designed for the Nissan Skyline GT-R R32 V-Spec, R33, and R34 front brakes. They are sold as rings only and are intended to be used with Girodisc aluminum hats. For correct fitment and performance, do not use with OEM or other aftermarket hats. D1-357 Vehicle Fitment • Nissan Skyline GT-R R32 V-Spec (Front – 324mm)• Nissan Skyline GT-R R33 (All models – Front)• Nissan Skyline GT-R R34 (All models – Front) Track-Proven Materials, Serviceable Design The rotor rings are machined from a proprietary high-carbon iron casting formulated to Girodisc’s specifications for durability and heat resistance. The 48 curved vanes act as a centrifugal pump, drawing cooling air through the hub to manage temperatures under hard use. The serviceable two-piece design lets you reuse your Girodisc hats and refresh braking performance by installing new rings (part number D1-357) when the originals wear out. D1-357 Features • Replacement rings only; reuse your existing Girodisc hats• Proprietary high-carbon iron for consistent performance• 48 curved vanes for efficient cooling under track conditions• Direct fit for Girodisc two-piece front rotors on R32 V-Spec, R33, R34 GT-R• Typical spec: 324mm diameter, 30mm nominal thickness• Recommended replacement thickness: 28mm Girodisc Nissan Skyline GT-R (R32 V-Spec, R33, R34) Front Replacement Rings FAQs: Do these include hats or hardware? These are rings only and are intended to be used with existing Girodisc hats. Hardware kits may be sold separately depending on your previous kit; contact us if you need hardware. Can I use these with OEM Nissan or other aftermarket hats? No. These rings are engineered specifically for Girodisc hats to ensure proper fit and performance. What is the recommended replacement thickness? Replace the rings at 28mm or if cracks propagate to the edge of the ring. Related Products Girodisc A1-357 Front Rotors – Nissan Skyline GT-R (R32 V-Spec, R33, R34) Girodisc D2-357 Replacement Rear Rotor Rings – Nissan Skyline GT-R (R32 V-Spec, R33, R34) Girodisc A2-357 Rear Rotors – Nissan Skyline GT-R (R32 V-Spec, R33, R34)

Girodisc Replacement Rotor Rings for Lotus Emira / Evora 400–GT When it’s time to refresh your braking system, the Girodisc D1-388 replacement rotor rings keep your setup performing like new. Designed to bolt directly onto your existing Girodisc A1-388 hats, these rings deliver the same high-carbon iron durability, cooling efficiency, and performance you expect from Girodisc, without the expense of replacing the entire assembly. D1-388 Vehicle fitment • 2022+ Lotus Emira (front axle)• 2017–2021 Lotus Evora 400 / 410 / 430 and 2020–2021 Evora GT (front axle) Note: Fits Girodisc A1-388 hats only. These are rotor rings only, not a complete assembly. High-carbon performance replacement rings These rings are machined from Girodisc’s proprietary high-carbon iron formulation. The material composition maximizes durability and thermal stability under repeated heavy braking. With the 72 curved vane internal cooling system, the D1-388 rings continue to pull air through the hub to keep operating temperatures in check during intense track sessions. D1-388 Features • Direct replacement rings for Girodisc A1-388 assemblies• 370 mm diameter x 32 mm thickness• Proprietary high-carbon iron metallurgy• 72 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 Related Products Girodisc A1-388 Front Rotors – Lotus Emira Girodisc A2-388 Rear Rotors – Lotus Emira Lotus Emira Rear Caliper Rebuild Kit Lotus Emira Rear Replacement Rings Lotus Emira Front Caliper Rebuild Kit Do these include hats or hardware? No. The D1-388 kit is rotor rings only. You’ll reuse your Girodisc A1-388 hats and hardware. How do I know when it’s time to replace the rings? Girodisc recommends replacement at 30 mm thickness or when cracks extend to the edge of the ring. Can I install these without special tools? Installation is straightforward but requires careful torqueing of fasteners. A professional shop is recommended if you’re not experienced with brake assembly. Are these rings street-friendly? Yes. Like the original A1-388 rotors, these are designed to provide race-level performance while staying quiet and compliant for street driving. Keep your braking performance sharp and cost-effective with Girodisc D1-388 replacement rotor rings for your Lotus Emira or Evora.

FITS: SUBARU STi (2004-2007) 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.

FITS: MITSUBISHI EVO 6/7/8/9 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.

FITS: FERRARI 360 CHALLENGE REPLACEMENT ROTOR DISC 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 grade12 cap screws with hardened washers and mounted with anti-noise spring washers to allow for heat expansion while eliminating the rattle and noise associated with floating rotors. The 2-piece GiroDisc design allows for rotor only replacement to minimize replacement costs and deliver outstanding performance and cooling. Sold/Priced per pair.

Girodisc D2-022 Replacement Rotor Rings Only This kit is for two replacement 330mm rotor rings for the Girodisc A2-022 Two Piece Floating Rotors. It contains rotor rings and new installation hardware only, no aluminum center hats. Please note that unless specifically noted, Girodisc replacement rings are only designed to work with Girodisc hats. They are not designed to be used with other brands, including hats from cars equipped with 2-piece rotors from the factory. High Performance Replacement Brake Rotor Rings These rotor rings are attached to the rotor hat (not included) by a floating mount system using 12 high-strength alloy steel drive pins manufactured by Girodisc in the USA and cadmium plated for long-lasting corrosion resistance. The drive pins bear the braking load 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, allowing the rotor to grow with heat expansion while eliminating the rattle typically associated with floating rotors. A floating rotor will also self-center between the pads. Sold/priced per pair.

Girodisc D2-023 Replacement Rotor Rings McLaren MP4-12C (Rear) REPLACEMENT ROTOR RINGS 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. This is a direct rotor ring 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 their own specifications and are cadmium plated for corrosion resistance. The alloy drive pins transfer the load from braking while maintaining axial and radial float between the 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-ring only replacement to minimize replacement costs and deliver outstanding performance and cooling. Sold/priced per pair.

Girodisc D2-031 Replacement Rear Rotor Rings (325mm) Replacement Rotor Rings Only -- No Center Hat 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 grade12 cap screws with hardened washers and mounted with anti-noise spring washers to allow for heat expansion while eliminating the rattle and noise associated with floating rotors. The 2-piece Girodisc design allows for rotor only replacement to minimize replacement costs and deliver outstanding performance and cooling. Sold/priced per pair.

ROTOR RINGS ONLY (NO HATS) Need new rings for your Girodisc A2-032 rear rotors? We got them. Rings come complete with all new hardware and full instructions for re-assembly. Price is for a pair of rings and 2 hardware kits. Additional hardware kits are available separately upon request.