Girodisc Rotors

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.

Girodisc GD380.32.52 380x32mm Replacement Rotor Rings (D52) The Girodisc GD380.32.52 Replacement Rotor Rings (D52) are designed as direct replacements for worn rotor rings in your existing Girodisc two-piece brake system. Manufactured in-house to the same exacting standards as all Girodisc components, these 380x32mm rings restore your braking performance while allowing you to reuse your original aluminum hats and hardware. Restore Peak Braking Performance Each Girodisc replacement ring is cast from Girodisc’s proprietary iron alloy in the USA and precision machined to exacting tolerances. The curved vane internal design functions as a centrifugal air pump, improving airflow and heat dissipation to keep temperatures consistent lap after lap. These replacement rings include new hardware and are ready to bolt directly onto your existing Girodisc hats. Features • Size: 380mm x 32mm (D52)• Direct replacement rotor rings for Girodisc two-piece systems• Compatible with Girodisc aluminum hats using D52 pattern• Proprietary cast iron alloy poured and machined in the USA• Curved vane internal geometry for maximum cooling efficiency• Includes new hardware kit for installation• Reuses existing aluminum hats• Sold/priced per pair Vehicle Fitment The Girodisc GD380.32.52 Replacement Rotor Rings (D52) fit multiple Girodisc brake systems used on high-performance vehicles, including:• Porsche 997.2 Turbo / Turbo S• Porsche 991 Carrera / Carrera S (with Girodisc 380mm upgrade kit)• Audi R8 V8 / V10 (with Girodisc 380mm rear kit)• McLaren 540C / 570S / 570GT (with Girodisc D52-based systems)• BMW F8X M2 / M3 / M4 (with Girodisc 380mm retrofit kits)Always confirm your hat pattern and bolt circle match the D52 specification before ordering. Girodisc GD380.32.52 380x32mm Replacement Rotor Rings (D52) FAQs What is included with these replacement rings? The kit includes two 380x32mm iron rotor rings (left and right) along with all new hardware for installation. Can I reuse my existing aluminum hats? Yes. These replacement rings are designed to bolt directly to your Girodisc aluminum hats using the provided hardware. Are the rings directional? Yes. Each rotor has directional curved vanes—ensure left and right sides are installed correctly for proper cooling airflow. What materials are used? The rings are made from Girodisc’s proprietary cast iron alloy, known for high heat capacity, durability, and consistent friction performance. Do these fit OEM or other aftermarket hats? No. Girodisc replacement rings are engineered specifically for Girodisc hats and may not fit other brands’ hardware or bolt patterns. Are they sold individually or as a set? The Girodisc GD380.32.52 380x32mm Replacement Rotor Rings (D52) are sold and priced per pair, including all required installation hardware. Maintain peak braking performance with genuine Girodisc GD380.32.52 Replacement Rotor Rings (D52)—crafted in the USA for reliability, strength, and precision fitment.

Girodisc 380x35mm Replacement Rotor Rings (D52) Need new rings for your Brembo or StopTech big brake kit? Girodisc has you covered. These 380x35mm replacement rings are 100% plug-and-play with your existing aluminum hats, offering a perfect fit and race-proven performance. Each set includes new floating pin hardware for a complete refresh of your braking system. Vehicle Fitment These Girodisc 380x35mm replacement rings fit a variety of big brake kits using 380x35mm rotors, including systems from Brembo, StopTech, and other performance brands. Verify your original rotor size and hat configuration before ordering to ensure compatibility.Note: These are replacement friction rings only and must be installed on existing Girodisc or compatible aluminum hats using the included hardware. Precision Engineering, Made in the USA The rotor rings are machined from Girodisc’s proprietary high-carbon cast iron, poured and finished in-house in the USA. Each rotor utilizes 72 curved directional vanes, engineered to act as a centrifugal air pump that pulls cooling air through the disc to lower operating temperatures and prevent fade during extreme braking. Whether on the street or at the track, Girodisc ensures consistent braking, superior pedal feel, and unmatched thermal control. Features • Direct-fit replacement for 380x35mm Girodisc, Brembo, and StopTech applications• Includes two new floating hardware kits• 72 curved vanes for maximum cooling efficiency• Proprietary high-carbon iron for strength and crack resistance• Machined, balanced, and finished in the USA• Bolt-on installation with existing hats• Sold/priced per pair Specifications • Diameter: 380mm• Thickness: 35mm• Vane Count: 72 curved directional• Position: Front or rear, depending on application• Includes: Two rotor rings and two complete hardware kits• Made in the USA• Sold/priced per pair Girodisc GD380.35.52 Replacement Ring FAQs Will these fit my Brembo or StopTech big brake kit? Yes — these are a direct bolt-on for systems using 380x35mm rotors and compatible aluminum hats. Do the rings come with new hardware? Yes. Each pair includes two complete hardware kits with new floating pins, bolts, and washers. Do I need to buy new hats? Not unless your existing hats are damaged. Girodisc rings are designed for re-use with your current hats to save cost and installation time. Can these be used for track driving? Absolutely. Girodisc’s 72-vane cooling design and proprietary iron alloy make these ideal for high-heat track conditions and extended endurance use. Rebuild your Brembo or StopTech big brake kit with confidence using Girodisc GD380.35.52 380x35mm replacement rings — precision-built, track-tested, and proudly made in the USA.

Girodisc Porsche 986/987/996/997.1 Front Rotors The Girodisc system is a direct replacement for the OE disc with the addition of the included caliper spacers and longer bolts. This upgrade increases the rotor diameter from 317mm to 340mm, improving braking force, cooling capacity, and pedal feel. It’s a true bolt-on upgrade that retains your factory calipers and ABS function while reducing unsprung and rotational mass for quicker suspension response and acceleration. Lightweight, High-Performance 2-Piece Rotors The central hat section is machined from U.S.-sourced 6061-T6 aircraft-grade aluminum, while the rotor rings are Girodisc’s proprietary high-carbon cast iron. Each component is made in the USA and machined in-house for precision fitment and consistency. The rotors feature a curved vane design that acts as a centrifugal pump, drawing cooling air through the disc during use for superior heat management on both street and track. Girodisc A1-031 Features Upgrades OE 317mm discs to 340mm for greater thermal capacity and stopping power Floating mount system with 10 cadmium-plated steel drive pins for controlled float and quiet operation Reduces unsprung and rotational mass for sharper handling Fully serviceable—replace just the rotor rings when worn Includes caliper spacers and longer bolts for proper fitment Designed, cast, and machined in the USA Vehicle Fitment Works with factory calipers—no permanent modifications required. Includes caliper spacers and longer bolts. Porsche 986 Boxster S (2000–2004, all non-Big-Red applications) Porsche 987 Boxster / Cayman (2005–2012, non-S) Porsche 996 Carrera (1999–2004, non-Turbo / non-GT) Porsche 997.1 Carrera (2005–2008, non-S) Does not fit: 996/997 Turbo, GT3/GT2, PCCB/ceramic brake packages, or 997.2 models. Technical Specifications Diameter: 340mm (OE 317mm) Vane Design: Curved, directional Hat Material: 6061-T6 aluminum, black anodized Ring Material: High-carbon cast iron Hardware: 10 floating drive pins with Class 12.9 fasteners Sold/Price: Per pair Girodisc A1-031 FAQs Do I need different brake pads? No. These rotors retain the factory caliper and pad shape—just choose your preferred compound for street or track use. Will these make noise like race rotors? No. Girodisc’s spring washer hardware prevents the rattle commonly found in floating rotors while maintaining proper float for thermal expansion. Are the rings replaceable? Yes. The design allows you to replace only the iron rings and reuse the aluminum hats, saving long-term cost. Can I use these for track days? Absolutely. They’re engineered to handle repeated heat cycles without warping or cracking when paired with proper pads and fluid. Upgrade your Porsche braking system with precision-engineered Girodisc rotors. Order today and experience improved stopping performance and reduced weight.

Girodisc 350mm Porsche 996 / 991 / 992 Rear Rotors (with Spacers & Bolts) The Girodisc A2-032B Rear Rotor Kit is a premium direct-fit replacement for Porsche 996, 991, and 992 models. Engineered for high-performance driving, this system includes caliper spacers and longer bolts to accommodate the larger 350mm rotors. The result is improved braking torque, enhanced cooling efficiency, and reduced unsprung mass—all while retaining factory fitment and ABS calibration. Lightweight Design & Increased Performance Each Girodisc rotor assembly pairs a CNC-machined 6061-T6 aluminum hat with a proprietary cast iron disc. The 2-piece design significantly reduces rotational mass compared to OEM rotors, improving suspension response and acceleration. The curved vane design acts as a centrifugal pump, drawing air through the rotor to enhance cooling and resist fade under extreme braking conditions. Precision Floating Mount System The rotors feature Girodisc’s race-proven floating mount design with 10 cadmium-plated steel drive pins connecting the iron ring to the aluminum hat. These pins allow the disc to expand radially under high temperatures without warping, ensuring consistent pad contact. Anti-noise spring washers eliminate rattle, maintaining quiet operation suitable for street and track use alike. Girodisc A2-032B 350mm 2pc Porsche Rear Rotor Vehicle Fitment Porsche 996 Carrera / Carrera 4 / Carrera 4S Porsche 991 Carrera / Carrera 4 / Carrera GTS (Base models require S/4S/GTS rear pad shape for full rotor sweep) Porsche 992 Carrera / Carrera S / Carrera 4S Direct bolt-on installation with supplied spacers and hardware Technical Specifications CMS Number: A2-032B Position: Rear Rotor Diameter: 350mm (includes caliper spacers & longer bolts) Design: 2-piece floating rotor assembly Material: Proprietary cast iron with 6061-T6 aluminum hat Vane Design: Curved directional vanes for improved airflow Hardware: Cadmium-plated steel drive pins, class 12.9 screws, anti-noise washers Rebuildable: Yes — replace rotor rings, reuse aluminum hats Sold/Price: Per pair Girodisc A2-032B 350mm 2pc Porsche Rear Rotor FAQs Do these rotors fit all Porsche 996, 991, and 992 models? Yes. However, 991 base Carrera models must use the S/4S/GTS rear pad shape for full pad sweep. What is included with this kit? Each kit includes two 350mm rotors, caliper spacers, and longer mounting bolts for a complete direct installation. Are modifications required? No. The supplied hardware makes this a true bolt-on upgrade using factory calipers and lines. What are the main benefits over stock rotors? Improved cooling, reduced weight, better pedal response, and replaceable rings for long-term cost savings. Upgrade your Porsche’s braking system with the Girodisc A2-032B Rear Rotor Kit. Experience reduced fade, sharper braking response, and long-term durability whether on the street or at the track.