Brake Rotors

D1-242 Girodisc Front Replacement Rotor Rings (Corvette C8) 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.

D1-249 Girodisc Front Rotor Rings (380mm) 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 380mm 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.

D1-268 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.

D1-272 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.

D1-291 Girodisc Front Replacement Rotor Rings One pair of Girodisc replacement 410mm rotor rings for the Girodisc A1-291 for Porsche 718 GT4RS.  two-piece floating rotor systems. Includes all necessary replacement hardware that must be used when replacing rotor rings. Sold/priced per pair.

D1-307 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.

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 D1-319 Front Replacement Rotor Rings – Corvette C8 Z06 (For GiroDisc 2-Piece Rotors) Upgrade your braking performance with GiroDisc D1-319 Front Replacement Rotor Rings, precision-engineered for the 2023+ Chevrolet Corvette C8 Z06. Designed as a direct replacement for GiroDisc's high-performance 2-piece rotor system, these rings bring fresh stopping power back to your track weapon or canyon carver. Key Features: Direct Fit for C8 Z06 (Non-Z07): Replaces worn GiroDisc rotor rings on your existing GiroDisc two-piece front rotors. Track-Ready Construction: Manufactured from proprietary high-carbon cast iron for optimal thermal capacity and minimal distortion under extreme heat. Floating Mount Design: Uses stainless steel hardware and alloy drive pins to allow axial float—reducing stress, noise, and warping. Improved Cooling Efficiency: 72 curved vane internal structure acts as a centrifugal pump to dissipate heat more effectively than OEM solid rotors. Complete Hardware Kit Included: Comes with new bolts and hardware for a hassle-free installation. Perfect For: Track day enthusiasts High-performance street driving Corvette C8 Z06 owners running GiroDisc 2-piece rotors Those replacing worn rings without needing 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 2-piece front rotors, non-Z07 brake package)Note: Not compatible with OEM or carbon ceramic setups. Why Choose GiroDisc? GiroDisc is known for manufacturing top-tier motorsport and high-performance braking solutions in the USA. Whether you're shaving lap times or daily driving with spirited confidence, these rotors deliver consistent braking force without compromise. 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

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.