Girodisc Rotors

Girodisc Hyundai N 314mm Rear Replacement Rotor Rings The Girodisc D2-217 Rear Replacement Rotor Rings are precision-built replacements for Girodisc two-piece rear rotors on Hyundai’s high-performance N models, including the Veloster N, Elantra N, Kona N, and i30 N. These 314mm iron rings are designed to restore braking performance, cooling efficiency, and reliability while maintaining the lightweight and serviceable design of your Girodisc system. Precision Replacement for Hyundai N Performance Applications Each Girodisc D2-217 replacement ring is manufactured in the USA from Girodisc’s proprietary cast iron alloy, optimized for heat resistance, durability, and consistent braking feel. The curved vane internal design acts as a centrifugal air pump, pulling cooling air through the rotor to reduce fade and warping during aggressive driving or track use. Sold as a matched pair, the kit includes all new hardware and installs directly onto your existing Girodisc aluminum hats. Features • Size: 314mm x 20mm (D2-217 configuration)• Direct replacement rings for Girodisc Hyundai N rear rotors• Proprietary cast iron alloy poured and machined in the USA• Curved vane internal geometry for superior cooling• Includes full hardware kit for installation• Reuses Girodisc aluminum hats• Maintains OEM brake bias and ABS calibration• Sold/priced per pair• Not compatible with OEM or other aftermarket hats Vehicle Fitment • Hyundai Veloster N – Rear• Hyundai Elantra N – Rear• Hyundai Kona N – Rear• Hyundai i30 N – Rear• Designed for Girodisc two-piece rotor systems• Will not fit OEM or non-Girodisc hats Girodisc D2-217 Rear Replacement Rotor Rings FAQs Can I reuse my existing Girodisc aluminum hats? Yes. These replacement rings bolt directly to your Girodisc aluminum hats using the supplied hardware. Are these compatible with OEM rotors? No. Girodisc replacement rings are designed exclusively for Girodisc two-piece rotor systems and will not fit OEM or other aftermarket hats. What’s included in the kit? Two iron rotor rings (left and right) and a full hardware set for reassembly, including bolts, washers, and drive pins. Are the rotors directional? Yes. Each rotor features directional curved vanes to ensure optimal cooling and airflow during rotation—install the left and right rings accordingly. Do these improve performance over OEM rotors? Absolutely. Girodisc systems reduce unsprung weight, improve heat dissipation, and deliver more consistent braking response compared to factory rotors. Are they sold individually or as a pair? The Girodisc D2-217 Hyundai N 314mm Rear Replacement Rotor Rings are sold and priced per pair and include all necessary hardware for installation. Maintain your Hyundai N’s braking performance with Girodisc D2-217 Rear Replacement Rotor Rings—engineered in the USA for superior cooling, endurance, and precision stopping power lap after lap.

Girodisc D2-238 Porsche 991 Cup / GT4 Clubsport Rear Replacement Rotor Rings (380x30) The Girodisc D2-238 Rear Replacement Rotor Rings are precision-engineered replacements for Girodisc two-piece rear rotors on the Porsche 991 Cup Car and Cayman GT4 Clubsport. Designed to restore factory braking performance and cooling efficiency, these 380x30mm rotor rings are built for the demands of professional motorsport. Race-Ready Engineering. Factory-Perfect Fit. Manufactured in the USA from Girodisc’s proprietary cast iron alloy, each rotor ring is optimized for strength, consistency, and high thermal capacity. The curved vane internal design acts as a centrifugal pump, forcing air through the rotor to maximize cooling and minimize fade. Sold as a pair, the kit includes all new hardware and is designed to bolt directly to your existing Girodisc aluminum hats for a simple, precise installation. Features • Size: 380mm x 30mm• Direct replacement rings for Girodisc Porsche 991 Cup and GT4 Clubsport rear rotors• Cast from Girodisc proprietary high-carbon iron alloy in the USA• Curved vane internal geometry for improved airflow and cooling• Includes all new hardware (drive pins, washers, and bolts)• Reuses Girodisc aluminum hats• Not compatible with OEM or non-Girodisc hats• Sold/priced per pair Vehicle Fitment • Porsche 991 GT3 Cup (All Years) – Rear• Porsche Cayman GT4 Clubsport (981 & 982) – Rear• Designed for Girodisc two-piece rotor systems• Will not fit OEM two-piece rotors or other aftermarket hats Girodisc D2-238 Porsche 991 Cup / GT4 Clubsport Rear Replacement Rings FAQs Can I reuse my aluminum hats? Yes. These replacement rings bolt directly to your existing Girodisc aluminum hats with the supplied hardware. Do these fit OEM or factory rotors? No. Girodisc replacement rings are engineered specifically for Girodisc two-piece systems and are not compatible with OEM or other aftermarket hats. What’s included in the package? Two iron rotor rings (left and right) and a full hardware kit for reassembly. Are the rotors directional? Yes. Each rotor features directional curved vanes for optimal airflow and cooling efficiency—ensure correct orientation during installation. Are they sold individually or as a set? The Girodisc D2-238 Rear Replacement Rotor Rings are sold and priced per pair, complete with hardware. What benefits do these offer over OEM rotors? Girodisc rotors reduce unsprung weight, improve cooling efficiency, and maintain consistent pedal feel and braking balance under the harshest track conditions. Maintain championship-level braking performance with Girodisc D2-238 380x30mm Rear Replacement Rotor Rings—crafted in the USA to deliver maximum precision, cooling, and reliability for Porsche 991 Cup and GT4 Clubsport race cars.

Girodisc Corvette C8 Z51 Rear Rotor Rings The Girodisc D2-242 Rear Replacement Rotor Rings are precision-engineered replacements for Girodisc two-piece rotors on the Chevrolet Corvette C8 Z51. Designed for seamless fitment and peak braking performance, these iron rings restore the stopping power, cooling efficiency, and balanced pedal feel your Girodisc system was built to deliver. Restore Performance with Genuine Girodisc Components Manufactured and machined entirely in the USA, each rotor ring is cast from Girodisc’s proprietary iron alloy for superior strength, thermal stability, and friction consistency. The curved vane internal structure acts as a centrifugal air pump, pulling cooling air through the rotor to maintain ideal temperatures under repeated hard braking. Sold in pairs and supplied with new hardware, these rings bolt directly to your existing Girodisc aluminum hats with no modification required. Features • Direct replacement for Girodisc Corvette C8 Z51 rear rotors• Proprietary cast iron alloy poured and machined in the USA• Curved vane internal geometry for enhanced cooling and fade resistance• Includes full replacement hardware kit for installation• Reuses Girodisc aluminum hats• Maintains OEM fitment and brake bias• Sold/priced per pair• Not compatible with OEM or other aftermarket hats Vehicle Fitment • Chevrolet Corvette C8 Z51 (All Years) – Rear• Designed for Girodisc two-piece rotor systems• Will not fit OEM two-piece rotors or other aftermarket hats Girodisc D2-242 Corvette C8 Z51 Rear Replacement Rotor Rings FAQs Can I reuse my Girodisc aluminum hats? Yes. These replacement rings are designed to bolt directly onto your existing Girodisc hats using the included hardware. What’s included in the kit? Two iron rotor rings (left and right) and all necessary hardware for reassembly. Do these fit OEM rotors or other brands? No. Girodisc replacement rings are engineered exclusively for Girodisc systems and are not compatible with OEM or other aftermarket hats. Are the rotors directional? Yes. Each ring is labeled left and right to ensure proper airflow through the curved vane cooling system. Do these improve performance over OEM? Yes. Girodisc rotors are lighter, run cooler, and offer more consistent braking under track or spirited driving conditions compared to factory components. Are they sold as a set? Yes. The Girodisc D2-242 Corvette C8 Z51 Rear Replacement Rotor Rings are sold and priced per pair and include all required hardware. Maintain the performance and precision of your braking system with Girodisc D2-242 Rear Replacement Rotor Rings—engineered for the Corvette C8 Z51 to deliver race-bred strength, superior cooling, and consistent stopping power lap after lap.

Girodisc Mercedes E63, GT53 Rear Replacement Rings (Dimpled & Slotted) Upgrade your AMG’s braking confidence with Girodisc dimpled and slotted rear replacement rings for the Mercedes E63 and GT53. These high-performance rotors are direct replacements for Girodisc’s two-piece assemblies, designed to restore race-ready bite, consistent thermal control, and responsive pedal feedback on both street and track. Vehicle Fitment Compatible with:• Mercedes-AMG E63 (W213)• Mercedes-AMG GT53 (C257 / X290)Note: These are replacement friction rings only. They mount directly to existing Girodisc aluminum hats using the included hardware kit. Precision Engineering Meets AMG Performance The Girodisc D2-248DS rings are machined from high-carbon cast iron and feature a dimpled and slotted face pattern for enhanced pad cleaning and outgassing under extreme heat. The curved internal vanes pump air through the rotor to maintain stable temperatures and reduce fade. Made entirely in the USA, Girodisc rings are the ultimate solution for repeatable, fade-free braking performance. Features • Dimpled and slotted surface for improved pad bite and cooling• Direct replacements for Girodisc two-piece rear rotor assemblies• High-carbon iron construction with directional curved vanes• Includes full replacement hardware kit• Designed for Girodisc aluminum hats only• Precision-machined and balanced in the USA• Sold/priced per pair Specifications • Application: Rear axle• Vehicles: Mercedes-AMG E63, GT53• Material: High-carbon cast iron• Design: Dimpled and slotted• Includes new hardware• Made in the USA• Sold/priced per pair Girodisc D2-248DS Replacement Ring FAQs What’s the advantage of dimpled and slotted rotors? The combination design helps evacuate gases and debris from between the pad and rotor, improving initial bite and maintaining friction consistency under heavy braking. Can I reuse my Girodisc aluminum hats? Yes, these rings are designed to bolt directly to your existing Girodisc hats using the supplied hardware kit. Do they fit OEM Mercedes rotors? No. These replacement rings are engineered exclusively for Girodisc two-piece rotor systems. Are these suitable for daily driving? Absolutely. Despite their motorsport pedigree, Girodisc rings maintain smooth, quiet operation during normal street use while offering superior heat management for spirited or track driving. Give your Mercedes-AMG E63 or GT53 the braking precision it deserves with Girodisc D2-248DS dimpled and slotted replacement rings — the perfect balance of street comfort and track endurance.

Girodisc D2-250 Porsche GT2 RS Clubsport Rear Replacement Rotor Rings The Girodisc D2-250 Rear Replacement Rotor Rings are precision-engineered replacements for Girodisc two-piece rotors fitted to the Porsche 991 GT2 RS Clubsport. Designed to match the performance and fitment of the original Girodisc system, these iron rings restore braking power, cooling efficiency, and pedal consistency for track-dominant Porsche applications. Built for the Demands of Motorsport Machined and cast in the USA, each Girodisc D2-250 rotor ring is made from Girodisc’s proprietary cast iron alloy, formulated for superior strength and thermal stability under repeated high-load braking. The curved vane internal geometry functions as a centrifugal air pump, improving airflow through the rotor and dramatically reducing temperatures. Sold as a pair, these replacement rings include all necessary hardware and bolt directly onto your existing Girodisc aluminum hats. Features • Direct replacement for Girodisc Porsche 991 GT2 RS Clubsport rear rotors• Proprietary cast iron alloy for consistent friction and durability• Curved vane internal geometry for maximum cooling and airflow• Reuses Girodisc aluminum hats• Includes complete hardware kit for installation• Engineered and machined in the USA• Sold/priced per pair• Not compatible with OEM or other aftermarket hats Vehicle Fitment • Porsche 991 GT2 RS Clubsport – Rear• Fits Girodisc two-piece rotor systems using D2-250 configuration• Will not fit OEM or non-Girodisc hats Girodisc D2-250 Porsche GT2 RS Clubsport Rear Replacement Rotor Rings FAQs Do these rotors fit OEM hats or hardware? No. Girodisc replacement rings are designed specifically for Girodisc aluminum hats and should not be used with OEM or other aftermarket hardware. What’s included in the package? Each set includes two iron rotor rings (left and right) and all necessary mounting hardware for reassembly. Can I reuse my existing Girodisc hats? Yes. These rings are designed to bolt directly to your current Girodisc aluminum hats, preserving the same lightweight two-piece configuration. What are the benefits of the curved vane design? Curved vanes pull air through the rotor as it spins, helping to regulate temperature and prevent fade during heavy braking—ideal for track environments. Are these rotors directional? Yes. Each ring is marked left and right to ensure proper airflow through the curved vane system. Are they sold individually or as a set? The Girodisc D2-250 Porsche GT2 RS Clubsport Rear Replacement Rotor Rings are sold and priced per pair, including hardware. Maintain peak braking performance on your Porsche GT2 RS Clubsport with Girodisc D2-250 Replacement Rotor Rings—precision-built to the same racing-grade standards that define Girodisc performance systems.

Girodisc D2-260DS Mercedes G63 Rear Replacement Rotor Rings (Dimpled & Slotted) The Girodisc D2-260DS Replacement Rotor Rings are precision-built replacements for the Girodisc two-piece rear rotors on the Mercedes G63 AMG. Featuring a dimpled and slotted surface for enhanced pad bite and heat dissipation, these 2-piece rotor rings restore peak braking performance while maintaining the quality and balance of your existing Girodisc system. Factory Fit. Race-Bred Performance. These 2-piece rotor rings are made from Girodisc’s proprietary cast iron alloy, poured and machined in the USA to exacting tolerances. The curved-vane internal geometry functions as a centrifugal air pump, drawing cool air through the disc to minimize fade and cracking. The dimpled and slotted surface helps evacuate gas and dust, improving pad contact and consistent braking feel. All new hardware is included, allowing for a quick and seamless reassembly onto your Girodisc aluminum hats. Features • Direct replacement for Girodisc Mercedes G63 rear rotors• Dimpled and slotted friction surface improves cooling and pad bite• Proprietary cast iron alloy poured and machined in the USA• Curved-vane internal geometry for efficient heat dissipation• Includes full hardware kit for installation• Reuses your existing Girodisc aluminum hats• Sold/priced per pair• Not compatible with OEM or non-Girodisc hats Vehicle Fitment • Mercedes-AMG G63 (all applicable years) – Rear• Designed for Girodisc 2-piece rotor systems• Will not fit OEM 2-piece rotors or non-Girodisc hats Girodisc D2-260DS Mercedes G63 Rear Replacement Rotor Rings FAQs What’s included with these replacement rings? The kit includes two dimpled and slotted iron rotor rings (left and right) along with new hardware for mounting to your existing Girodisc hats. Can I reuse my original hats? Yes. These replacement rings are designed to bolt directly to your Girodisc aluminum hats, preserving the fit and balance of your existing system. Are these compatible with OEM or other brands? No. Girodisc replacement rings are engineered exclusively for use with Girodisc hats and hardware. What are the advantages of the dimpled and slotted surface? It enhances braking by improving pad bite, clearing gas and dust, and reducing the risk of glazing during repeated high-temperature stops. Do these include curved vane internal design? Yes. The curved vane structure increases airflow through the disc, keeping rotor temperatures lower during spirited driving or track use. Are they sold individually or as a pair? The Girodisc D2-260DS Mercedes G63 Rear Replacement Rotor Rings are sold as a matched left/right pair and include all necessary mounting hardware. Keep your braking system in peak condition with Girodisc D2-260DS Dimpled & Slotted Rear Replacement Rings—precision-engineered for the Mercedes G63 and built to deliver the cooling, bite, and performance your Girodisc system is known for.

Girodisc Chevrolet Camaro (6th Gen) Rear Replacement Rings Maintain the razor-sharp braking performance of your 6th Gen Camaro with Girodisc 365mm rear replacement rings. These precision-engineered rings are direct replacements for Girodisc two-piece rotors, restoring the braking consistency and cooling efficiency demanded by track and street enthusiasts alike. Vehicle Fitment Compatible with:• 2016–2024 Chevrolet Camaro SS• 2017–2024 Chevrolet Camaro ZL1• 2019–2024 Chevrolet Camaro ZL1 1LE• 2016–2024 Chevrolet Camaro LT1 (with performance brake package)Note: These are friction rings only. They attach directly to existing Girodisc aluminum hats using the included floating hardware kit. Track-Tested Engineering Every Girodisc rotor ring is cast from a proprietary high-carbon iron alloy and precision-machined in the USA. The curved internal vanes function as a centrifugal pump, pulling air through the disc to dissipate heat efficiently during hard braking. This design reduces fade and ensures consistent pedal feel through repeated heat cycles—whether you’re carving corners or pushing limits at the track. Features • Direct replacement for Girodisc 365mm rear rotors• Fits 6th Gen Camaro SS, ZL1, ZL1 1LE, and LT1 performance packages• High-carbon iron alloy ensures strength and stability under heat• Directional curved vane design improves cooling efficiency• Fully machined, balanced, and assembled in the USA• Includes new floating hardware kit• Sold/priced per pair Specifications • Diameter: 365mm• Position: Rear• Material: High-carbon cast iron• Includes: Two rotor rings and complete hardware kit• Made in the USA• Sold/priced per pair Girodisc D2-271 Replacement Ring FAQs Do these rings fit OEM Camaro rotors? No. These are designed exclusively for Girodisc two-piece rotor systems or compatible aftermarket hats. Is installation straightforward? Yes. These rings bolt directly to your existing Girodisc hats using the provided hardware. No modifications are required. Are these rotors suitable for track use? Absolutely. Girodisc rings are track-proven, offering superior heat management and resistance to warping or cracking. Can I reuse my current hardware? We recommend using the new hardware kit included with the rings for maximum safety and performance. Rebuild your Camaro’s braking system the right way with Girodisc D2-271 rear replacement rings — designed for performance, precision, and unmatched stopping confidence.

Girodisc Porsche 992 GT3, GT4 RS Rear Replacement Rings Keep your Porsche’s braking system performing at its best with Girodisc D2-272 rear replacement rings. Designed as direct replacements for Girodisc two-piece rotor assemblies, these high-performance 380mm rings restore cooling efficiency, reduce fade, and maintain optimal pedal feel lap after lap. Vehicle Fitment Compatible with:• 2022–2025 Porsche 911 GT3 (992)• 2023–2025 Porsche 718 Cayman GT4 RS• 2023–2025 Porsche 718 Spyder RSNote: These are friction rings only. They attach to existing Girodisc aluminum hats using the supplied floating hardware kit. Precision-Crafted for Track and Street Each Girodisc rotor ring is cast from a proprietary high-carbon iron alloy and machined in-house in the USA. The 72 curved directional vanes are designed to act as a centrifugal pump, pulling air through the disc to maximize cooling and stability under extreme heat. Whether you’re attacking corners on a race circuit or pushing hard on mountain roads, Girodisc rotors deliver consistent, confident braking. Features • Direct replacements for Girodisc 380mm rear rotors• Fits Porsche 992 GT3, GT4 RS, and Spyder RS models• Proprietary high-carbon iron construction for superior heat resistance• Curved directional vanes enhance airflow and cooling• Precision machined, balanced, and finished in the USA• Includes new floating hardware kit• Sold/priced per pair Specifications • Diameter: 380mm• Position: Rear• Material: High-carbon cast iron• Includes: Two rotor rings and full hardware kit• Made in the USA• Sold/priced per pair Girodisc D2-272 Replacement Ring FAQs Are these compatible with OEM Porsche rotors? No. These rings are designed for Girodisc two-piece systems and will not fit factory one-piece or PCCB rotors. Do the rings come with hardware? Yes. Each set includes a full floating hardware kit with pins, bolts, and washers for an easy installation. Can these be used for track driving? Absolutely. Girodisc rotors are race-proven and built to handle sustained high temperatures without warping or fade. How often should replacement rings be changed? Replace them when the rotor reaches its minimum thickness or shows cracking that extends to the edge of the disc. Renew your Porsche’s braking confidence with Girodisc D2-272 rear replacement rings — precision-built for the 992 GT3 and GT4 RS, combining world-class craftsmanship with proven track performance.

D2-282 Girodisc 370mm Rear 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 – 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.

Girodisc Ferrari 488 Challenge Evo Rear Replacement Rings Restore your 488 Challenge Evo’s braking edge with Girodisc rear replacement rings, engineered for uncompromising track performance. These high-carbon iron rings are direct replacements for your existing Girodisc two-piece rotors, delivering race-ready thermal stability, smooth pedal modulation, and rebuildable longevity lap after lap. Vehicle Fitment Compatible with:• Ferrari 488 Challenge Evo (All Years)Note: These are replacement rotor rings only and are designed to bolt directly to Girodisc aluminum hats using the included hardware kit. Track-Focused Engineering Each Girodisc ring is machined from proprietary high-carbon cast iron for superior heat management and crack resistance under extreme braking conditions. The curved vane internal design acts as a centrifugal air pump, efficiently pulling cool air through the disc to lower operating temperatures and reduce fade. Manufactured and finished in the USA, Girodisc replacement rings ensure factory-grade fit and race-grade reliability for serious competition use. Features • Direct replacement for Girodisc rear rotors on Ferrari 488 Challenge Evo• Proprietary high-carbon iron casting ensures strength and heat control• Curved directional vane design improves airflow and cooling efficiency• Includes new high-strength assembly hardware• Compatible only with Girodisc aluminum hats• Made and machined in the USA• Sold/priced per pair Specifications • Application: Rear axle• Vehicle: Ferrari 488 Challenge Evo• Material: High-carbon cast iron• Includes replacement hardware• Made in the USA• Sold/priced per pair Girodisc D2-285 Replacement Ring FAQs: Are these rotors or just the rings? These are replacement friction rings only, designed to mount to your existing Girodisc aluminum hats using the supplied hardware. Will these fit OEM Ferrari rotor hats? No. Girodisc rings are engineered exclusively for Girodisc hats and will not fit OEM or other aftermarket systems. What’s included in the kit? Each set includes two replacement rings and a full hardware kit with drive pins, washers, and fasteners. When should the rings be replaced? Replace your rings once they reach minimum thickness or if cracks extend to the outer edge. This maintains consistent, safe braking performance on track. Equip your Ferrari 488 Challenge Evo with Girodisc D2-285 replacement rings and maintain the braking precision and durability demanded by serious racers worldwide.

Lamborghini Huracán STO Rear Replacement Rings Maintain the world-class braking performance of your Lamborghini Huracán STO with Girodisc Rear Replacement Rings. These precision-engineered rings are designed to replace only the iron rotor surface, allowing you to reuse your Girodisc aluminum hats and restore peak braking efficiency with minimal expense. Each pair includes new hardware for a precise, secure installation. Race-Bred Performance, Track-Ready Design Machined in the USA from Girodisc’s proprietary cast iron, these replacement rings feature a curved vane design that actively channels cooling air through the rotor. The result is improved heat management, reduced fade, and consistent pedal feel during demanding conditions on both street and track. Features Sold as a pair and includes new replacement hardware Direct replacement for Girodisc two-piece rear rotors Reuse your existing Girodisc aluminum hats for cost savings Proprietary U.S.-poured cast iron for superior strength and thermal control Curved vane internal design for maximum cooling efficiency Fully machined and assembled in the USA Vehicle Fitment 2021–2025 Lamborghini Huracán STO (rear axle equipped with Girodisc two-piece rotors) Lamborghini Huracán STO Rear Replacement Rings FAQs: Do these fit OEM or factory two-piece rotors? No. These rings are specifically designed for Girodisc two-piece rotor systems and will not fit OEM or other aftermarket rotor assemblies. What’s included in the box? Two replacement rings, new hardware, and detailed installation instructions. Your Girodisc aluminum hats are reused. When should I replace my Girodisc rings? Replace when the rotors reach minimum thickness or if you notice heat checking, cracks, or excessive wear. Do I need to replace both sides at the same time? Yes. Always replace rings in pairs to maintain balanced braking and even wear. Can I install these myself? Installation can be done by experienced DIYers, but Girodisc recommends professional installation to ensure correct torque and safety. Do these rings come balanced? Yes. Girodisc replacement rings are pre-balanced to factory specifications for vibration-free performance. Please note: Girodisc replacement rings are designed for use only with Girodisc hats unless otherwise specified.

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.

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 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.

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.

Girodisc GD355.32.52 355x32mm Replacement Rotor Rings (D52) The Girodisc GD355.32.52 Replacement Rotor Rings (D52) are precision-built replacements for Girodisc two-piece rotor systems using the D52 configuration. Sized at 355mm x 32mm, these genuine Girodisc rings restore full braking performance while allowing you to reuse your existing aluminum hats and floating hardware, saving time and cost without compromising quality. Precision Engineering for Long-Term Performance Each Girodisc replacement ring is manufactured in-house in the USA from Girodisc’s proprietary cast iron alloy, designed to handle the extreme heat and stress of high-performance driving. The curved vane internal design acts as a centrifugal air pump, increasing airflow through the rotor to reduce operating temperatures and prevent fade. These rings are machined to exact tolerances and include a new hardware kit for a complete, bolt-on installation. Features • Dimensions: 355mm x 32mm (D52 configuration)• Direct replacement for Girodisc two-piece D52 systems• Reuses existing Girodisc aluminum hats• Proprietary cast iron alloy poured and machined in the USA• Curved vane internal geometry for efficient cooling• Includes new hardware for installation• Directional vanes for left and right rotors• Sold/priced per pair Vehicle Fitment The Girodisc GD355.32.52 355x32mm Replacement Rotor Rings (D52) fit Girodisc D52-based two-piece systems used on:• Porsche Cayman / Boxster (Girodisc 355mm D52 kits)• BMW M2 / M3 / M4 (Girodisc 355mm D52 front or rear systems)• Audi S4 / S5 (Girodisc 355mm D52 setups)• Subaru WRX STI with Girodisc D52 355mm conversion• Other high-performance applications using Girodisc D52 hat patternAlways verify your hat pattern and rotor dimensions match the D52 specification before ordering. Girodisc GD355.32.52 355x32mm Replacement Rotor Rings (D52) FAQs What’s included in the kit? Two iron rotor rings (left and right) and a full set of new mounting hardware for reassembly. Do I reuse my aluminum hats? Yes. These rings are designed to bolt directly to your existing Girodisc hats using the included hardware kit. Are they compatible with OEM or other brands? No. Girodisc rings are engineered specifically for Girodisc aluminum hats and hardware. Are the rotors directional? Yes. Each rotor features curved vane geometry for left and right installation, ensuring optimal airflow and cooling. What material are they made from? Girodisc’s proprietary cast iron alloy provides high strength, excellent thermal stability, and consistent friction under extreme conditions. Are they sold as a set? Yes. The Girodisc GD355.32.52 355x32mm Replacement Rotor Rings (D52) are sold and priced per pair, including all required hardware. Restore factory-level braking performance and reliability with Girodisc GD355.32.52 Replacement Rotor Rings (D52)—precision-engineered in the USA for unmatched quality, cooling, and endurance.