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GiroDisc Racing Brakes & Technologies D2-187 Girodisc Audi 356mm Rear Replacement Rings $1,222.00

Audi 356mm Rear Replacement Rings Keep your braking system in top condition with Girodisc 356mm Rear Replacement Rings for Audi models. These rings are precision-engineered as direct replacements for existing Girodisc two-piece rotors, allowing you to restore full braking performance while reusing your aluminum hats. Each pair comes complete with new hardware, making maintenance straightforward and cost-effective. Precision Replacement, Race-Proven Quality Manufactured from Girodisc’s proprietary cast iron and machined entirely in the USA, these replacement rings deliver the same performance and reliability as your original Girodisc rotors. The curved vane internal design promotes superior cooling, reducing fade and maintaining consistent performance even under high stress. Simply bolt on the new rings using your existing Girodisc hats to regain optimal stopping power. Features Direct replacement for Girodisc two-piece rear rotors Sold in pairs and includes replacement hardware Machined from proprietary U.S.-poured cast iron for maximum durability Curved vane design ensures efficient cooling and heat dissipation Lightweight two-piece configuration reduces unsprung mass 100% made and assembled in the USA Vehicle Fitment Audi models equipped with Girodisc 356mm two-piece rear rotors Check your existing Girodisc hat part number for compatibility Audi 356mm Rear Replacement Rings FAQs: Do these rings fit OEM or factory two-piece rotors? No. Girodisc replacement rings are designed exclusively for use with Girodisc hats and are not compatible with OEM two-piece rotor systems or other brands. What is included in the kit? Each pair of replacement rings includes new hardware and instructions for installation. Your existing Girodisc aluminum hats are reused. Can I install the rings myself? Installation can be performed by experienced DIYers, but Girodisc recommends professional installation to ensure proper torque and safety. When should I replace my rings? Replace when the minimum rotor thickness is reached or if there is visible cracking, warping, or heat checking. Are these made in the USA? Yes, Girodisc rings are fully manufactured and machined in the United States using proprietary materials and processes. Restore your Audi’s track-ready braking performance with Girodisc 356mm Rear Replacement Rings — the perfect balance of precision, cooling, and lightweight design.

GiroDisc Racing Brakes & Technologies D1-307 Girodisc Front Replacement Rotor Rings $1,222.00

Toyota GR Supra, BMW 348mm Front Replacement Rings Restore your braking performance with the Girodisc D1-307 Front Replacement Rings, designed for the Toyota GR Supra and BMW Z4 M40i. These precision-engineered 348mm iron rotor rings are direct replacements for your existing Girodisc two-piece rotors, delivering the same championship-level performance, reduced unsprung weight, and thermal stability that make Girodisc the gold standard for performance braking. Manufactured from Girodisc’s proprietary high-carbon cast iron alloy and machined in the USA, these rotors are built to handle extreme braking forces and high temperatures without fade. If your original Girodisc rotors have reached their wear limit, these replacement rings let you renew your braking setup while reusing your original Girodisc aluminum hats — saving cost without sacrificing quality. Features and Benefits Direct replacements for Girodisc 348mm front two-piece rotors Crafted from proprietary U.S.-poured high-carbon cast iron 48 curved directional vanes maximize airflow and cooling Lightweight two-piece design reduces unsprung mass Includes all new hardware: drive pins, bolts, and washers Engineered, machined, and balanced entirely in the USA Vehicle Fitment 2020+ Toyota GR Supra (A90 / A91) 2019+ BMW Z4 M40i BMW G29 Platform (B58 engine) These rotor rings are designed exclusively for Girodisc aluminum hats and are not compatible with OEM or other aftermarket hat assemblies. Why Choose Girodisc Girodisc performance rotors are trusted by track enthusiasts and professional racers for their ability to handle high thermal loads while maintaining consistent braking feel. The D1-307 front replacement rings deliver the same performance and cooling benefits as a brand-new set — for a fraction of the price. Each ring is optimized for even heat distribution and minimal warping, giving you confident braking under pressure lap after lap. FAQs Do these include the aluminum hats?No. The D1-307 kit includes only the iron rotor rings and a new hardware kit. Your existing Girodisc hats are reused. Are these compatible with factory rotors?No. Girodisc rings are engineered exclusively for use with Girodisc hats and cannot be mounted to OEM or other aftermarket assemblies. Are the rotors directional?Yes. Each rotor features curved internal vanes that must be installed on the correct side for proper cooling and airflow direction. What’s included?Two 348mm front rotor rings (left and right) and a full hardware kit with drive pins, bolts, and washers. Ready to Upgrade? When it’s time to refresh your braking system, the Girodisc D1-307 Front Replacement Rings deliver the unmatched cooling, strength, and consistency that define Girodisc. Perfect for both daily driving and track-day abuse, they’ll keep your Toyota GR Supra or BMW Z4 M40i stopping with confidence. Order your set today from Competition Motorsport and get back to peak performance.

GiroDisc Racing Brakes & Technologies D1-282 Girodisc BMW G8X 380mm Front Replacement Rings $1,222.00

D1-282 Girodisc BMW G8X Front Replacement Rings 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 – Front (for A1-282 kits) BMW G80/G81 M3 – Front (for A1-282 kits) BMW G82/G83 M4 – Front (for A1-282 kits) Quick Refresh, Track-Ready High-carbon iron rings with 72 curved vanes move air efficiently. New drive pins, clips, and Belleville washers restore proper float and clamp force for quiet street manners and durability under heat. Features Replacement rings only; includes new hardware Direct fit for Girodisc A1-282 front rotor kits High-carbon iron; USA-poured and machined 72-vane internal geometry for cooling airflow Sold/priced per pair D1-282 FAQs Minimum thickness? Replace at 34 mm or if any crack reaches the outer edge. Re-use hardware? No — install the included new hardware and torque per instructions. Re-bed pads? Yes — perform a standard bedding procedure after ring replacement.

GiroDisc Racing Brakes & Technologies D2-322 Girodisc BMW G8X Iron Conversion Rear Replacement Rings $1,222.00

BMW G8X Iron Conversion Rear Replacement Rings Renew your braking performance with the Girodisc D2-322 Rear Replacement Rings, designed specifically for the Girodisc A2-322 Iron Conversion rotor system on the BMW G8X platform. Whether your M3 or M4 originally came with carbon ceramics or standard iron rotors, these rings let you restore peak performance without replacing your entire rotor assembly. Each set is precision-machined from Girodisc’s proprietary U.S.-poured high-carbon cast iron, delivering the same championship-level performance and cooling efficiency as your original Girodisc rotors. Built to withstand extreme heat cycles and track abuse, the D2-322 replacement rings bring your braking system back to life with fresh hardware and exact OEM fitment. Features and Benefits Direct replacement rings for Girodisc Iron Conversion Rear Rotors (A2-322) Includes all new attachment hardware – pins, bolts, and washers Machined from proprietary high-carbon cast iron for superior heat capacity and durability 48 curved directional vanes maximize airflow for efficient cooling Lightweight two-piece rotor design reduces unsprung and rotational mass Fully machined, balanced, and assembled in the USA Vehicle Fitment BMW G80 M3 (2021+) BMW G82 M4 (2021+) BMW G83 M4 Convertible (2021+) These replacement rings are designed exclusively for Girodisc Iron Conversion kits (part number A2-322) and will not fit OEM or other aftermarket rotor hats, including factory two-piece assemblies. Why Choose Girodisc Girodisc has earned its reputation as the leader in performance braking systems, offering precision-engineered components built for the demands of modern sports cars. Each rotor ring is designed to provide consistent braking, optimized cooling, and maximum longevity. The D2-322 replacement set lets you keep your original Girodisc hats while restoring the braking response and confidence you expect from your G8X M car. FAQs Do these include the aluminum hats?No. The D2-322 kit includes only the iron rotor rings and new hardware. You will reuse your existing Girodisc hats from the A2-322 Iron Conversion kit. Are these compatible with OEM BMW carbon ceramic or two-piece rotors?No. These are only compatible with Girodisc Iron Conversion rotor hats (A2-322) and cannot be used with OEM or other aftermarket assemblies. Are they directional?Yes. Each rotor ring has curved internal vanes designed for optimal airflow and cooling when installed on the correct side. What’s included in the box?A pair of rear replacement rings (left and right) and a complete hardware kit with new drive pins, bolts, and washers. Ready to Upgrade? If your Girodisc iron conversion rotors have reached their wear limit, the D2-322 Rear Replacement Rings will bring your BMW M3 or M4 braking system back to its peak. Experience the legendary cooling and stopping performance that make Girodisc the go-to choice for track and street enthusiasts alike. Order your set today from Competition Motorsport and get back to maximum braking confidence.

GiroDisc Racing Brakes & Technologies D2-318 Girodisc Cadillac CT4-V Blackwing Rear Replacement Rings $1,222.00

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.

GiroDisc Racing Brakes & Technologies D1-311 Girodisc Audi B9 S4, S5, SQ5 Front Replacement Rings $1,222.00

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 Racing Brakes & Technologies D2-123 Girodisc Mercedes 360mm Rear Replacement Rings $1,222.00

Girodisc Mercedes Rear Replacement Rings Maintain the stopping power of your Mercedes AMG with Girodisc D2-123 360mm rear replacement rings. These precision-machined rings are designed to bolt directly to your existing Girodisc two-piece rotor hats using the included floating hardware kit, allowing you to refresh the wear surface without replacing the full assembly. Perfect for both street and track use, these rings restore braking consistency and thermal performance. Vehicle Fitment Compatible with:• Mercedes-Benz C63 AMG (W204 / W205 chassis)• Mercedes-Benz E63 AMG (W212 / W213 chassis)• Mercedes-Benz CLS63 AMG (C218 chassis)• Mercedes-Benz S63 AMG (W222 chassis, steel rotor applications)Note: For use with Girodisc 360mm two-piece rear rotor systems only. Not compatible with OEM or carbon-ceramic rotors. Features • Sold as a left/right pair with complete floating hardware kit• Direct replacements for Girodisc 360mm two-piece rear rotors• CNC-machined from high-carbon cast iron for strength and heat control• Directional curved vanes provide superior cooling under heavy braking• Maintains OEM brake bias and ABS function• Designed exclusively for Girodisc aluminum hats – not compatible with OEM or other brands Specifications • Diameter: 360mm• Position: Rear• Material: High-carbon cast iron• Surface: Plain (non-dimpled/slotted)• Mount type: Floating two-piece system• Includes: Two rings and hardware kit• Sold/priced per pair• MSRP: $880.00 Girodisc D2-123 Replacement Ring FAQs Will these fit OEM Mercedes rotors? No. These are engineered specifically for Girodisc two-piece rotor systems and will not bolt to OEM or carbon-ceramic assemblies. Are both sides included? Yes. Each D2-123 kit includes left and right replacement rings along with all new hardware. Why replace just the rings instead of the full rotor? Replacing only the rings saves cost while maintaining your Girodisc hats and original performance characteristics. Do I need to use the new hardware? Yes. Always install the supplied new hardware for proper fitment, safety, and longevity. Refresh your AMG’s braking system with Girodisc D2-123 360mm rear replacement rings — precision-built for heat management, consistency, and fade-free stopping performance on the road or track.

GiroDisc Racing Brakes & Technologies D1-308 Girodisc Mercedes 360mm Front Replacement Rings $1,222.00

D1-308 Girodisc Mercedes 360mm Front Replacement Rings These Girodisc D1-308 front replacement rings are sold in pairs and include new hardware. They are designed to bolt to existing Girodisc aluminum hats only (not compatible with OEM or other hats). Vehicle Fitment Mercedes-AMG GT (C190) 2017+ – Front (for Girodisc 360 mm kits) 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 Replacement rings only; reuse your Girodisc hats Includes new drive pins, spring clips, and Belleville washers High-carbon iron rings with directional internal vanes Slotted face for stable friction and pad cleanup For Girodisc 360 mm front kits on the listed models D1-308 Girodisc Mercedes 360mm Front Replacement Rings FAQs: How do I know these rings match my hats? Verify your hat part number from the original Girodisc kit; D1‑308 mates to 360 mm front hats used in the listed AMG GT applications. What is the minimum thickness? Replace when worn to Girodisc’s stated discard thickness or if cracks reach an edge (inspect regularly for track use). Do I need threadlocker on the hardware? Use the supplied hardware and follow Girodisc torque/spec sheet; do not substitute fasteners. Can I run these with drilled pads or track pads? Yes. Slotted rings are compatible with OEM and aggressive compounds; follow pad bedding procedures. Related Products A1-308 Girodisc Mercedes 360mm Front Rotors A2-148 Girodisc Mercedes 360mm Rear Rotors D1-308 Girodisc Mercedes 360mm Front Replacement Rings D2-123 Girodisc Mercedes 360mm Rear Replacement Rings

GiroDisc Racing Brakes & Technologies D1-135 Girodisc Porsche 981, 718 Front Replacement Rings $1,222.00

Girodisc Front Replacement Rings for Porsche 981 / 718 Restore your braking performance without replacing the entire rotor assembly. Girodisc D1-035 front replacement rings are sold in pairs and include all new hardware. Simply bolt them to your existing Girodisc hats to bring your braking system back to peak performance. D1-135 Vehicle fitment • Porsche 981 / 718 Cayman & Boxster (front axle) equipped with Girodisc 2-piece rotors.• Compatible exclusively with Girodisc aluminum hats; not designed for use with OEM or other aftermarket hats, even on factory 2-piece rotor vehicles. Note: Always verify hat ID, bolt pattern, and rotor outer diameter compatibility before installation. Precision-engineered replacement solution Each D1-135 ring is manufactured from high-carbon cast iron and heat-treated for durability. These rings are a direct replacement for worn Girodisc rings, allowing you to keep your lightweight aluminum hats and floating hardware while restoring performance. D1-135 Features • Sold as a pair with all replacement mounting hardware• High-carbon cast iron rotor rings• Bolt-on fitment to Girodisc hats (no modifications required)• Balanced and heat-treated for consistent performance• Compatible with Girodisc floating rotor design using drive pins, washers, and spring clips• Manufactured in-house in Bellingham, WA from domestically sourced materials• Designed for longevity and serviceability Service guidance • Replace rings when thickness reaches the minimum specification or if cracks extend to the ring edge.• Reuse Girodisc hats and install new D1-135 rings with supplied hardware for a cost-effective refresh. Get your Porsche 981 / 718 back to maximum braking performance with Girodisc D1-135 front replacement rings—an efficient, high-quality service solution designed to keep you on track.

GiroDisc Racing Brakes & Technologies D1-388 Girodisc Lotus Emira Front Replacement Rings $1,222.00

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 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.

GiroDisc Racing Brakes & Technologies D2-162 Girodisc 2pc Rear Replacement Discs | Shelby GT350/GT350R (2015+) $1,222.00

Girodisc Ford GT350/GT350R Rear Rotor Rings Rear Fitment, Ford Shelby GT350/GT350R with Girodisc A2-162 rotors The Girodisc D1-162 is the direct replacement rotor rings for your Girodisc A2-162 brake rotor kit. This complete kit consists of two new discs (rotor rings) and all replacement hardware. You will re-use the Girodisc aluminum hats from your A2-162 kit and bring your braking feel back to new. Girodisc GT350 Rear Rotor Rings Details Manufacturer: Girodisc Manufacturer Part Number: D2-162 Surface: Slotted Material: Steel Intended for Street/Track Use: Yes For Use with Stock Calipers: Yes Rotor Construction: Vented Rotor Style: Slotted surface Rotor Material: Iron Rotor Finish: Black E-coat Quantity: Sold pair (one axle set) Sold/priced per pair of rings only (does not include center hat and does NOT fit OEM hats.) Girodisc Advantages Girodisc brake kits are seen at every track weekend on very exotic and extreme track cars. What made Girodisc owners leave their OEM rotors and upgrade to a 2 piece Girodisc kit? Less Rotating Mass via two-piece design Grade 12 floating hardware to allow the rotor to grow when heated Curved vane design creates a cooler rotor Significant cost reduction compared to OEM Girodisc Floating Rotor Rings Quality hi-carbon cast iron is the foundation of every Girodisc brake rotor. Every rotor ring is made carefully in house at the Girodisc factory in Washington state. The Girodisc rotor utilizes a curved vane design that was originally developed in racing to act as a centrifugal air pump to force cooling air from the center of the rotor ring to the outside. This principle is similar to what is know as a squirrel cage fan design. By having impellers (vanes) between the two rotor faces, the air is moved radially, from the center outward, changing the direction of the airflow and increasing velocity. This design is mechanically strong, reliable, and very effective. Girodisc Rotor Ring Hardware The Girodisc rotor ring and light-weight aluminum hat have a floating mount system, which utilizes 8 or 10 high strength alloy steel drive pins, manufactured by Girodisc in the USA to their own specifications and cadmium plated for long-lasting corrosion resistance. These drive pins take the load from braking actions while maintaining the axial and radial float between the hat and disc. The drive pins are secured by grade 12 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. Girodisc Rotor Ring Replacement Once the Girodisc system is in place, simply replace the cast iron rotor when needed. Your Girodisc replacement rotor rings come complete with two new rotor rings and all required floating rotor hardware. This is a very simple task that is quite fun. The aluminum rotor hat usually does not ever need replacement unless bent or damaged. If you damaged has reached your Girodisc hat, you likely have more than a few other things to replace also. The hat is rugged and overly strong.

GiroDisc Racing Brakes & Technologies D1-162 Girodisc Ford Shelby GT350 Front Replacement Rings $1,222.00

Girodisc Ford Shelby GT350 Front Rings Maintain peak braking performance in your GT350 or GT350R with Girodisc D1-162 394mm front replacement rings. These high-performance rings bolt directly to your existing Girodisc aluminum hats using the included floating hardware kit. Machined from Girodisc’s proprietary high-carbon cast iron, they deliver superior heat dissipation, reduced unsprung weight, and consistent braking power under the extreme temperatures of track use. Vehicle Fitment Compatible with:• Ford Mustang Shelby GT350 (2016–2020)• Ford Mustang Shelby GT350R (2016–2020)Note: Designed exclusively for Girodisc 394mm two-piece front rotor systems. Not compatible with OEM one-piece or carbon-ceramic rotors. Features • Sold as a left/right pair with complete floating hardware kit• Direct replacements for Girodisc 394mm two-piece front rotors• CNC-machined from high-carbon cast iron for maximum strength and heat resistance• Directional curved vanes increase airflow and cooling• Maintains OEM brake bias and ABS calibration• Precision-balanced to eliminate vibration and ensure smooth braking• Designed exclusively for Girodisc aluminum hats Specifications • Diameter: 394 mm• Position: Front• Material: High-carbon cast iron• Mount type: Floating two-piece system• Includes: Two rotor rings and full hardware kit• Sold/priced per pair Girodisc D1-162 Ford Shelby GT350 Front Replacement Ring FAQs Do these work with OEM GT350 hats? No. The Girodisc D1-162 rings are designed to bolt only to Girodisc aluminum hats. OEM one-piece or carbon-ceramic systems are not compatible. What pad compounds pair best with these rotors? For mixed street/track driving, Ferodo DS2500 or Hawk HPS 5.0 are excellent choices. For full track use, Girodisc recommends Pagid RSL 1 or Carbotech XP12 compounds. What torque should I use for the hardware bolts? Torque each bolt to 12 ft-lbs (16 Nm) with blue Loctite, and recheck after the first full heat cycle. Are these rotors directional? Yes. Each rotor is marked for left and right use. Installing them correctly ensures proper airflow through the curved cooling vanes for maximum heat dissipation. Upgrade your GT350’s braking confidence with Girodisc D1-162 394mm front replacement rings — engineered for precision, strength, and endurance on street or circuit.

GiroDisc Racing Brakes & Technologies D2-220 Girodisc BMW F8X 380mm Rear Replacement Rotor Rings $1,222.00

Girodisc BMW F8X 380mm Rear Rotor Rings The Girodisc D2-220 Rear Replacement Rotor Rings are designed as direct replacements for Girodisc two-piece rear rotors used on the BMW F8X platform, including the M2, M3, and M4. These 380mm iron rings restore full braking performance and cooling efficiency, maintaining the same lightweight, high-performance design as your existing Girodisc setup. Restore Track-Level Performance Each Girodisc D2-220 replacement ring is manufactured in the USA from Girodisc’s proprietary cast iron alloy, chosen for its exceptional thermal stability and consistent friction characteristics. The curved vane internal geometry acts as a centrifugal air pump, drawing cooling air through the rotor to reduce fade and distortion. Sold as a pair, the rings come with a complete new hardware kit and are ready to bolt directly to your Girodisc aluminum hats. Features • Size: 380mm x 30mm• Direct replacement for Girodisc BMW F8X M2 / M3 / M4 rear rotors• Proprietary cast iron alloy poured and machined in the USA• Curved vane design for optimal cooling and airflow• Includes full hardware kit for installation• Reuses Girodisc aluminum hats• Maintains factory ABS and brake balance• Sold/priced per pair• Not compatible with OEM or other aftermarket hats Vehicle Fitment • BMW F80 M3 (All Years) – Rear• BMW F82 / F83 M4 (All Years) – Rear• BMW F87 M2 / M2 Competition / M2 CS – Rear• Compatible with vehicles equipped with Girodisc two-piece rotor systems• Will not fit OEM or non-Girodisc hats Girodisc D2-220 BMW F8X 380mm Rear Replacement Rotor Rings FAQs Can I reuse my existing Girodisc hats? Yes. These replacement rings are designed to bolt directly onto your Girodisc aluminum hats with the supplied hardware. Are these compatible with OEM or other brands? No. Girodisc replacement rings are engineered exclusively for Girodisc systems and are not compatible with OEM or other aftermarket hats. What’s included in the kit? Two iron rotor rings (left and right) and a full hardware kit with drive pins, washers, and bolts. Are the rotors directional? Yes. Each ring features directional curved vanes to ensure proper airflow and cooling efficiency—make sure to install left and right rotors correctly. Do these perform better than OEM rotors? Yes. Girodisc rotors provide improved cooling, reduced weight, and consistent braking response under repeated heavy use compared to factory one-piece rotors. Are they sold as a pair? Yes. The Girodisc D2-220 BMW F8X 380mm Rear Replacement Rotor Rings are sold and priced per pair, complete with all necessary installation hardware. Keep your BMW M2, M3, or M4 braking system performing at its best with Girodisc D2-220 Rear Replacement Rotor Rings—precision-crafted for superior cooling, endurance, and race-ready stopping power.

GiroDisc Racing Brakes & Technologies D1-203 Girodisc 350mm Front Replacement Rings for Porsche $1,222.00

Girodisc Porsche 718, 991.2, 992.1 Carrera Front Replacement Rings Refresh the braking precision of your Porsche Carrera with Girodisc D1-203 350 mm front replacement rings. These precision-engineered rings bolt directly to your existing Girodisc aluminum hats using the included floating hardware kit. Cast from Girodisc’s proprietary high-carbon iron alloy, they deliver enhanced cooling, consistent friction, and fade-free braking in both street and track environments. Vehicle Fitment Compatible with:• Porsche 718 Cayman / Boxster S & GTS (Front)• Porsche 991.2 Carrera / Carrera S (Front)• Porsche 992.1 Carrera / Carrera S (Front)Note: Designed exclusively for Girodisc 350 mm two-piece front rotor systems. Not compatible with OEM PCCB or one-piece iron rotors. Features • Sold as a left/right pair with complete floating hardware kit• Direct replacements for Girodisc 350 mm two-piece front rotors• CNC-machined from high-carbon cast iron for superior thermal stability• Directional curved vanes enhance airflow and reduce heat buildup• Maintains factory brake bias and ABS calibration• Precision-balanced for vibration-free operation• Designed exclusively for Girodisc aluminum hats – not compatible with OEM or other brands Specifications • Diameter: 350 mm• Position: Front• Material: High-carbon cast iron• Mount type: Floating two-piece system• Includes: Two rotor rings and complete hardware kit• Sold/priced per pair Girodisc D1-203 Porsche 718 / 991.2 / 992.1 Carrera Front Replacement Ring FAQs Are these compatible with Porsche PCCB carbon-ceramic systems? No. The D1-203 rings are designed for Girodisc steel two-piece systems only and will not fit PCCB setups. Do they fit both 718 and 992 Carrera models? Yes. They share identical rotor dimensions and fitment when using Girodisc hats designed for each chassis. How do they compare to OEM rotors in performance? Girodisc rings provide improved cooling efficiency, reduced unsprung weight, and lower replacement cost over OEM options. Are they quiet enough for street driving? Yes. The floating system is engineered for minimal noise during daily use while maintaining full race-level durability under heat. Upgrade your Porsche 718, 991.2, or 992.1 Carrera with Girodisc D1-203 350 mm front replacement rings — precision-built for balanced braking, exceptional cooling, and long-term performance on road or track.

GiroDisc Racing Brakes & Technologies D1-186 Girodisc Replacement Rotors $1,222.00

Girodisc D1-186 Replacement Rotor Rings (Discs) Girodisc replacement rotor rings are direct replacements for the iron discs on your Girodisc A1-186 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.

GiroDisc Racing Brakes & Technologies D2-232 Girodisc Rear Rotor Rings $1,222.00

Girodisc D2-232 Nissan GT-R Rear Replacement Rotor Rings The Girodisc D2-232 Rear Replacement Rotor Rings are precision-engineered replacements for Girodisc two-piece rear rotors on the Nissan GT-R. Designed to restore your braking system’s performance, these rotor rings deliver exceptional cooling, balance, and durability under extreme driving conditions—on both street and track. Engineered for the GT-R’s Performance Demands Each Girodisc D2-232 replacement ring is machined in the USA from Girodisc’s proprietary cast iron alloy, formulated for strength, heat capacity, and friction consistency. The curved vane internal geometry functions as a centrifugal air pump, pulling air through the disc to lower temperatures and prevent brake fade. This kit includes all necessary hardware and bolts directly to your existing Girodisc aluminum hats, ensuring a quick and precise installation. Features • Direct replacement for Girodisc Nissan GT-R rear rotors• Proprietary cast iron alloy poured and machined in the USA• Curved vane internal geometry for efficient cooling and fade resistance• Reuses existing Girodisc aluminum hats• Includes complete hardware kit for installation• Designed for maximum strength and balanced weight distribution• Sold/priced per pair ($880.00)• Not compatible with OEM or other aftermarket hats Vehicle Fitment • Nissan GT-R (R35) – Rear• Fits Girodisc two-piece rotor systems• Will not fit OEM or non-Girodisc two-piece rotors Girodisc D2-232 Nissan GT-R Rear Replacement Rotor Rings FAQs Can I reuse my existing Girodisc hats? Yes. These replacement rings are designed to bolt directly onto your Girodisc aluminum hats with the included hardware kit. What’s included in the package? Two iron rotor rings (left and right) and all necessary mounting hardware for a complete reinstallation. Are these rotors directional? Yes. Each rotor features directional curved vanes—be sure to install them correctly for optimal airflow and cooling performance. Will these fit OEM or other aftermarket systems? No. These replacement rings are exclusively engineered for Girodisc two-piece rotors and are not compatible with factory or non-Girodisc hats. How do these compare to OEM rotors? Girodisc rotors offer improved cooling, reduced weight, and more consistent braking under repeated hard use compared to OEM components. Are they sold individually or as a set? The Girodisc D2-232 Nissan GT-R Rear Replacement Rotor Rings are sold and priced per pair and include all required hardware. Restore the precision and performance of your GT-R’s braking system with Girodisc D2-232 Rear Replacement Rotor Rings—crafted in the USA for superior cooling, balance, and endurance.