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GiroDisc Racing Brakes & Technologies D2-119 Girodisc Lamborghini Aventador Rear Replacement Rings $1,050.00

Girodisc Lamborghini Aventador Rear Replacement Rings Refresh the braking power of your Lamborghini Aventador with Girodisc D2-119 380mm rear replacement rings. These high-performance rings are designed as direct replacements for Girodisc two-piece rotors, attaching seamlessly to your existing Girodisc aluminum hats with the included floating hardware kit. Replace only the wear surface while retaining your precision-machined hats for consistent braking performance and reduced operating costs. Vehicle Fitment Compatible with:• Lamborghini Aventador LP700-4 (rear)• Lamborghini Aventador S (rear)• Lamborghini Aventador SV / SVJ (rear)Note: For vehicles equipped with Girodisc 380mm two-piece rear rotor systems. Not compatible with OEM or carbon-ceramic rotors. Features • Sold as a left/right pair and includes full hardware kit• Direct replacements for Girodisc 380mm two-piece rear rotors• CNC-machined from proprietary high-carbon cast iron• Directional curved vanes optimize airflow for improved cooling• Maintains OEM brake bias and ABS calibration• Designed exclusively for Girodisc aluminum hats – not compatible with OEM or other brands Specifications • Diameter: 380mm• Position: Rear• Material: High-carbon cast iron• Mount type: Floating two-piece system• Includes: Two rings and full hardware kit• Sold/priced per pair Girodisc D2-119 Replacement Ring FAQs Will these fit OEM Lamborghini rotors? No. These are designed for Girodisc two-piece rotor systems only and are not compatible with factory carbon-ceramic or steel rotors. Are both sides included? Yes. Each D2-119 kit includes both left and right replacement rings with a complete hardware kit. Why replace just the rings instead of the entire rotor? Replacing only the rings retains your Girodisc hats, saves cost, and restores braking performance without the need for a full rotor assembly. Do I need to use the new hardware? Yes. Always use the included new hardware to ensure proper fitment, torque, and safety. Upgrade your Lamborghini Aventador braking system with Girodisc D2-119 380mm rear replacement rings — engineered for precision, heat control, and fade-free braking performance on both street and track.

GiroDisc Racing Brakes & Technologies D1-159 Girodisc McLaren 394mm Front Replacement Rings $1,050.00

D1-159 Girodisc McLaren 394mm Front Replacement Rings Renew your McLaren’s braking performance with Girodisc D1-159 394mm front replacement rings. These precision-engineered components bolt directly to your existing Girodisc aluminum hats using the supplied floating hardware kit. Each ring is machined from Girodisc’s proprietary high-carbon cast iron for superior thermal control, balanced response, and fade-free braking under extreme track conditions. Vehicle Fitment Compatible with:• McLaren 540C / 570S / 570GT / 600LT (Front)• McLaren 650S / 675LT (Front)• McLaren MP4-12C (Front)Note: Designed for Girodisc 394mm two-piece front rotor systems. Not compatible with OEM carbon-ceramic rotors or one-piece iron discs. 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 durability and high-temperature stability• Directional curved vanes accelerate airflow for maximum cooling efficiency• Maintains factory brake bias, ABS, and stability control calibration• Precision-balanced for smooth, vibration-free operation• Designed exclusively for Girodisc aluminum hats used in McLaren iron-conversion systems Specifications • Diameter: 394 mm• Position: Front• Material: High-carbon cast iron• Mount type: Floating two-piece system• Includes: Two rotor rings and new hardware kit• Sold/priced per pair Girodisc D1-159 McLaren 394mm Front Replacement Ring FAQs Can I use these with McLaren’s OEM carbon-ceramic rotors? No. These are for Girodisc steel rotor conversions only and will not fit OEM ceramic brake hardware. What pad compounds are best suited for these rotors? For street/track mix, Pagid RS29 or Ferodo DS2500 pads are excellent. For full track duty, Pagid RSL1 or Endless ME20 are ideal high-temp options. Are these rotors directional? Yes. Each rotor is marked for left and right orientation to ensure the curved vanes channel airflow correctly through the disc for optimal cooling. What’s the service life of these rotors under track use? Typically 20–30 hours of hard circuit time depending on track layout, pad compound, and cooling efficiency. Street-driven cars often exceed 40,000 miles. Upgrade your McLaren’s braking precision with Girodisc D1-159 394mm front replacement rings — race-bred components engineered for stability, cooling, and performance at any speed.

Two-piece Girodisc brake rotors with curved slots with black rotor hats and gold-colored hardware.

GiroDisc Racing Brakes & Technologies A2-114 Girodisc BMW E9X 335i Rear Rotors $1,050.00

Girodisc BMW E9X 335i Rear Rotors Upgrade your BMW 335i’s braking system with Girodisc’s lightweight two-piece rear rotors, precision-engineered to deliver sharper response, improved cooling, and reduced unsprung mass. Designed as a true OEM replacement, these rotors enhance both street comfort and track performance without altering factory balance or ABS calibration. Vehicle Fitment BMW 335i (E90 Sedan / E92 Coupe / E93 Convertible, 2007–2013)BMW 335is (E92 / E93, 2011–2013)Compatible with OEM single-piston rear calipers and factory hardware. Engineered for Precision and Performance The Girodisc system installs directly onto your vehicle with no modifications required. Each rotor features a 6061-T6 aluminum hat mated to Girodisc’s proprietary cast-iron friction ring for optimal thermal stability. The floating two-piece design allows even heat expansion, preventing warping and maintaining consistent pedal feedback. Curved internal vanes act as centrifugal pumps, channeling air through the rotor to maximize cooling efficiency and durability under repeated heavy braking. Features • Direct OEM replacement – bolts to factory hubs• 6061-T6 billet aluminum hats with hard-anodized finish• Proprietary cast-iron friction rings cast and machined in the USA• Floating mount system with cadmium-plated steel drive pins• Anti-noise spring washers eliminate rattle while maintaining float• Curved vane internal design enhances cooling• Significantly lighter than OEM rotors for reduced unsprung weight• Fully rebuildable – replace only the iron rings when worn• Sold/priced per pair Girodisc A2-114 Rear Rotor FAQs: Do these rotors fit all E9X 335i models? Yes. They fit the E90, E92, and E93 BMW 335i and 335is models equipped with factory brake systems. Will I need to change my pads? No. Girodisc rotors are designed to work seamlessly with your existing OEM or performance pads. What benefits will I notice after installation? Expect smoother pedal feel, improved brake modulation, and faster cooling between stops thanks to reduced mass and enhanced airflow. Are these suitable for daily use and track days? Absolutely. Girodisc rotors are engineered for dual-purpose performance—quiet and reliable on the street, yet resilient enough for track sessions. Transform the braking performance of your E9X BMW with Girodisc rear rotors—crafted for drivers who demand precision, balance, and performance at every stop.

GiroDisc Racing Brakes & Technologies A1-114 Girodisc BMW E9X 335i Front Rotors (2006-2008) $1,050.00

BMW E9X 335i Front Rotors Upgrade your BMW E9X 335i’s stopping power with Girodisc 2-piece floating front rotors — a direct bolt-on replacement designed to outperform the factory setup. No modifications are needed; these rotors mount seamlessly to your OEM calipers while preserving factory brake balance and ABS functionality. The Girodisc design cuts significant unsprung and rotational mass, improving handling, throttle response, and overall braking feel. Each rotor features a CNC-machined 6061-T6 aluminum hat paired with Girodisc’s proprietary high-carbon cast-iron rings. The internal curved vane pattern is engineered to act as a centrifugal pump, drawing air through the rotor to dissipate heat under extreme conditions — from spirited canyon drives to full track sessions. Precision-Crafted for Performance Vehicle Fitment BMW E90 / E92 / E93 335i BMW E90 / E92 / E93 335is Girodisc A1-114 Features Direct replacement design: Bolts to OEM calipers with no modifications or spacers required. Lightweight construction: Reduces unsprung weight for improved suspension response and steering feedback. Curved vane cooling: Efficiently channels air through the disc for better heat dissipation and fade resistance. Floating mount hardware: Uses cadmium-plated drive pins and anti-noise spring washers to manage thermal expansion silently. Serviceable two-piece design: Replace only the iron rotor rings when worn, reducing long-term cost. Made in the USA: All materials are sourced, cast, and machined in-house by Girodisc for consistent quality. Girodisc A1-114 FAQs Will these rotors fit my stock calipers? Yes. They’re a direct-fit upgrade that works perfectly with OEM 335i calipers. Do I need to change brake pads? No. Your existing OEM or performance pads will fit without modification. Are these rotors suitable for track days? Absolutely. The curved vane design ensures consistent braking and cooling under track conditions. Do they make noise like other floating rotors? No. Girodisc uses anti-noise spring washers to eliminate rattling while allowing full float under heat. How are they sold? Sold and priced per pair. Bring your BMW’s braking to the next level with Girodisc front rotors — lighter, cooler, and engineered to deliver track-proven performance with factory-level refinement.

GiroDisc Racing Brakes & Technologies A1-117 Girodisc 2pc Front Brake Rotors for C6 Corvette Z06 $1,050.00

Corvette C6 Z06, Grand Sport Front Rotors The Girodisc 2-piece front rotor upgrade is the ultimate braking enhancement for the Corvette C6 Z06 and Grand Sport. Designed as a direct replacement for the heavy factory rotors, these precision-engineered discs bolt directly to your stock calipers—no modifications required. With each rotor weighing just 19.2 lbs compared to the 25.6 lb OEM units, this upgrade slashes rotational and unsprung mass for improved turn-in, sharper handling, and more responsive acceleration. Each Girodisc rotor features a 6061-T6 aircraft-grade aluminum hat mated to proprietary cast iron rings, both designed and machined in the USA. The internal curved vane design acts as a centrifugal air pump, continuously drawing cool air through the disc to dissipate heat. The result is exceptional fade resistance, consistent pedal feel, and the durability to withstand repeated high-speed stops without warping. Lightweight Performance, Track-Proven Reliability Vehicle Fitment Chevrolet Corvette C6 Z06 Chevrolet Corvette C6 Grand Sport Girodisc A1-117 Features Direct OEM replacement: Works seamlessly with factory calipers and ABS, no modifications required. Significant weight savings: 19.2 lbs vs. 25.6 lbs OEM per rotor—less unsprung mass for better control and agility. Advanced cooling design: Curved directional vanes pull air through the disc, reducing fade and heat soak. Floating mount system: Precision steel drive pins allow axial and radial float, eliminating noise and maintaining pad alignment. Serviceable two-piece design: Replace only the iron rings for cost-effective maintenance over time. Made in the USA: Designed, cast, and machined in-house to the highest motorsport standards. Girodisc A1-117 FAQs Are these rotors a direct fit for OEM calipers? Yes. Girodisc rotors bolt directly to the stock C6 Z06 or Grand Sport calipers with no modifications needed. What’s the weight difference compared to factory rotors? Each Girodisc rotor saves approximately 6.4 lbs, improving acceleration and suspension response. Do I need new brake pads? No, these rotors are compatible with factory or aftermarket pads designed for the C6 Z06 and Grand Sport. Are these rotors track-ready? Absolutely. Girodisc rotors are engineered for demanding street and track use, offering superior heat management and fade resistance. How are they sold? Sold and priced per pair. Transform your Corvette’s braking performance with Girodisc 2-piece front rotors—lightweight, durable, and built to deliver the precision stopping power your Z06 or Grand Sport deserves.

GiroDisc Racing Brakes & Technologies D1-111 Girodisc Ferrari 398mm Front Replacement Rings $1,050.00

Girodisc Ferrari 398mm Front Replacement Rings Restore peak braking performance on your Ferrari with Girodisc 398mm front replacement rings. These high-carbon iron friction rings are designed to bolt directly to your existing Girodisc two-piece rotor hats, offering a precise fit and consistent stopping power for both street and track applications. Vehicle Fitment Compatible with:• Ferrari 458 Italia• Ferrari 458 Speciale• Ferrari 488 GTB / Spider• Ferrari F8 TributoNote: These are replacement rings only. They attach directly to your existing Girodisc aluminum hats using the included hardware. Track-Ready Performance and Quality Each Girodisc 398mm replacement ring is cast and machined in the USA using a proprietary high-carbon iron alloy that delivers superior heat stability and minimal distortion under extreme braking. The directional curved vane design acts as a centrifugal air pump, dramatically improving cooling efficiency and fade resistance. Whether you’re on the street or at the track, Girodisc ensures consistent pedal feel and reliable braking lap after lap. Features • Direct replacement for 398mm Girodisc front rotor assemblies• Compatible with OEM Ferrari calipers• High-carbon cast iron improves thermal stability and wear resistance• Curved vane internal design for optimal cooling• Precision balanced and machined in the USA• Includes complete new hardware kit• Sold/priced per pair Specifications • Diameter: 398mm• Position: Front• Material: High-carbon cast iron• Includes new hardware• Made in the USA• Sold/priced per pair Girodisc D1-111 Replacement Ring FAQs Do these fit the OEM Ferrari carbon-ceramic setup? No, these replacement rings are designed only for Girodisc two-piece iron conversions. OEM carbon-ceramic systems require a full iron-conversion kit. Will these work with my factory calipers? Yes, these are engineered to retain the OEM Ferrari calipers and maintain proper brake bias and pedal feel. Are new hats required? No. The Girodisc two-piece system allows re-use of your aluminum hats, making future rebuilds more cost-effective. Do the rings include hardware? Yes, each pair includes new floating pin and bolt hardware for proper installation. Refresh your Ferrari’s braking performance with Girodisc D1-111 398mm front replacement rings — engineered for precision, cooling efficiency, and endurance-grade reliability.

GiroDisc Racing Brakes & Technologies D1-110 Girodisc Ferrari 430 Scuderia Front Replacement Rings $1,050.00

D1-110 Girodisc Ferrari Front Rings Bring race-grade braking back to your Ferrari with Girodisc D1-110 380mm front replacement rings. These precision-machined rotors are direct replacements for Girodisc’s two-piece systems and mount to your existing aluminum hats using the included floating hardware kit. Each ring is crafted from Girodisc’s proprietary high-carbon cast iron, engineered to handle extreme heat, maintain consistent pedal feel, and deliver fade-free performance through repeated track sessions. Vehicle Fitment Compatible with:• Ferrari 430 Scuderia (2008–2009)• Ferrari F430 Challenge (2006–2009)• Ferrari F430 Berlinetta (Iron conversion applications)Note: Designed exclusively for Girodisc 380mm two-piece front rotor systems. Not compatible with OEM carbon-ceramic (CCM) rotors or factory one-piece discs. Features • Sold as a left/right pair with complete floating hardware kit• Direct replacements for Girodisc 380mm two-piece front rotors• High-carbon iron alloy provides improved heat capacity and wear resistance• Directional curved vanes optimize airflow and cooling under high-speed braking• Maintains factory brake balance, ABS, and stability control calibration• Precision-balanced for smooth performance and reduced unsprung weight• Designed exclusively for Girodisc aluminum hats Specifications • Diameter: 380 mm• Position: Front• Material: High-carbon cast iron• Mount type: Floating two-piece system• Includes: Two rotor rings and new hardware kit• Sold/priced per pair Girodisc D1-110 Ferrari 430 Scuderia Front Replacement Ring FAQs Do these rotors replace the OEM Ferrari carbon-ceramic discs? No. The D1-110 rings are designed for Girodisc iron rotor conversion kits and will not mount to factory CCM hardware. What pad compounds work best with these rotors? For mixed road and track use, Pagid RS29 or Ferodo DS1.11 pads perform exceptionally. For racing, use Pagid RSL1 or Endless ME20 compounds for superior high-temp stability. Are these rotors directional? Yes. Each rotor is marked for left and right installation. The curved internal vanes must face the correct direction for proper airflow and cooling efficiency. What torque specification should be used for the hardware? Tighten all bolts to 12 ft-lbs (16 Nm) using blue Loctite. After the first heat cycle, verify hardware torque to ensure proper floating action. Upgrade your Ferrari’s braking system with Girodisc D1-110 380mm front replacement rings — engineered to deliver endurance, precision, and confidence from the road to the race circuit.

Antigravity Batteries H8 Group 49 lithium-ion battery on a white background

Antigravity Batteries Antigravity H8/Group-49 Lithium Car Battery from $1,049.99

Antigravity Lithium Car Battery The Antigravity H8/Group 49 Lithium Car Battery is the ultimate OEM-sized upgrade for high-performance and exotic vehicles like Ferrari. Built for drivers who demand more power and less weight, this lithium battery delivers up to 2000 cranking amps while shedding nearly 40 lbs compared to stock. With built-in wireless jump-starting and advanced battery management, it's a smarter, lighter, and more reliable solution. Big Power – OEM Fit – Built-In Jump Start. Antigravity H8 Battery Features: OEM Group 49 (H8) case size: 14" x 7" x 7.5" — direct drop-in replacement Available in 60Ah (1800CA) and 80Ah (~2000CA) configurations RE-START Technology: Wireless jump-starting built in—just press the key fob button Complete Battery Management System (BMS) with thermal, overcharge, short circuit, and cell-balancing protection Ultra-lightweight: up to 70% lighter than lead-acid—drop nearly 40 lbs instantly! Safe LiFePO4 lithium chemistry for stable, long-lasting performance Threaded M8x1.25 terminals for secure, performance-grade installation Antigravity H8/Group 49 Battery FAQs: What makes this battery different from a standard AGM? It weighs 70% less, delivers 2–3x the cranking amps, and includes wireless jump-start tech built right in. Which applications is the H8 size ideal for? High-performance and exotic vehicles requiring Group 49 case size—especially Ferraris where higher Ah is critical due to parasitic draw. Can I install this myself? Yes. It’s a plug-and-play drop-in for any car using an H8/Group 49 battery—no modifications or spacers needed. Does the BMS protect the battery over time? Absolutely. The built-in BMS ensures safe charging, usage, and storage conditions to prolong battery life. Unlock reliable power, serious weight savings, and built-in jump-starting with the Antigravity H8/Group 49 Lithium Battery—the best drop-in solution for your performance vehicle. Performance Vehicles That Use H8 Size: Ferrari NEW! Lightweight Lithium Batteries with Wireless Remote Built-In Jump Starting! Antigravity Batteries has changed the game again with their latest Lithium-Ion Car Batteries. The newest RE-START line of batteries offers built-in WIRELESS Jump-Starting! That means if your battery is ever discharged, simply press the button on the provided key fob, start the car, and drive away! No need for a jump starter or roadside assistance. You don’t even have to open the hood—activate it from inside your vehicle! If you want to track your battery status via Bluetooth, you can use the Bluetooth Battery Tracker PLUS (sold separately).

Sparco Pilot QRT Racing Seat Lowest Price

Sparco S.p.A. Sparco Pilot QRT Racing Seat $1,049.00

Sparco Pilot QRT Racing Seat The Sparco Pilot QRT is one of the largest composite racing seats available, engineered to accommodate bigger and taller drivers without sacrificing safety or weight. Built with Sparco’s QRT (Quick Resin Technology) fiberglass shell, it delivers ultra-light strength, integrated head bolsters, and deep side bolsters for maximum lateral support. The shell is wrapped in impact-absorbing, fire-retardant fabric with non-slip zones in the shoulders and seat base. Compatible with HANS devices and FIA approved, the Pilot QRT provides secure ergonomics for endurance stints and high-G corners. Specifications Manufacturer: Sparco Part Number: 008018RNR Homologation: FIA 8855-1999 Shell: QRT ultralight fiberglass composite Mounting: Side-mount Driver Fit: Largest/tallest Sparco profile Compatibility: HANS device Upholstery: Fire-retardant with non-slip inserts What is Sparco QRT? Developed in Italy using aerospace-inspired methods, QRT is a patented process that achieves exceptional strength-to-weight, reducing shell weight by up to 30% versus traditional fiberglass while approaching carbon-fiber performance at a lower cost. Pilot QRT Technology QRT ultralight fiberglass shell Integrated head protection and deep side bolsters Ergonomic support for larger/taller drivers Fire-retardant, grippy upholstery FIA 8855-1999 approved; HANS compatible Dimensions Competition Motorsport | sales@competitionmotorsport.com | (844) 438-7244

Pagid Pagid Racing Brake Pads No. 8269 (Front) | Ceramic Brakes $1,032.22

Pagid Racing Brake Pad Shape No. 8269 Fits the Following Vehicles: Make Model Years Front Rear McLaren 600LT [ceramic brakes] 2019 - 21 X McLaren 720S [ceramic brakes] 2017 - 23 X McLaren 620R [ceramic brakes] 2019 - 21 X McLaren Artura [ceramic brakes] 2023 + X McLaren GTS [ceramic brakes] 2024 + X Pagid Racing Brake Pads are engineered for high-performance driving, delivering exceptional stopping power, durability, and control under the most demanding conditions. Trusted by professional racers and performance enthusiasts worldwide, these pads are crafted using advanced friction materials and cutting-edge technology to ensure consistent performance, low fade, and excellent modulation. Whether you're on the track or tackling aggressive street driving, Pagid Racing Brake Pads provide the reliability and confidence you need to push your vehicle to its limits. Pagid RSC 1 Compound (Ceramic Rotors Only): A race and track day compound for all known types of ceramic brake discs, RSC 1 is a low metallic resin bonded material containing steel and aramid fibers. This material features good all-round characteristics and is suitable for all types of usage.

GiroDisc Racing Brakes & Technologies D1-123 Girodisc Mercedes 390mm Front Replacement Rings $1,030.00

D1-123 Girodisc Mercedes 390mm Front Replacement Rings Maintain the uncompromising stopping performance of your AMG with Girodisc D1-123 390mm front replacement rings. These precision-engineered rings are designed as direct replacements for Girodisc’s two-piece systems, bolting to your existing aluminum hats using the supplied floating hardware kit. Each rotor is machined from Girodisc’s proprietary high-carbon cast iron to deliver outstanding heat control, consistent braking feel, and fade resistance in both spirited road and track use. Vehicle Fitment Compatible with:• Mercedes-Benz C63 AMG (W204, 2008–2015)• Mercedes-Benz E63 AMG (W212, 2010–2016)• Mercedes-Benz CLS63 AMG (C218, 2012–2017)• Mercedes-Benz S63 AMG (W222, 2014–2017) – Iron rotor conversionNote: Designed for Girodisc 390mm two-piece front rotor systems. Not compatible with OEM one-piece or carbon-ceramic discs. Features • Sold as a left/right pair with complete floating hardware kit• Direct replacements for Girodisc 390mm two-piece front rotors• CNC-machined from high-carbon iron alloy for superior heat resistance• Directional curved vanes maximize airflow and cooling efficiency• Maintains factory brake bias, ABS, and ESP calibration• Precision-balanced to eliminate vibration and maintain pedal feel• Designed exclusively for Girodisc aluminum hats Specifications • Diameter: 390 mm• Position: Front• Material: High-carbon cast iron• Mount type: Floating two-piece system• Includes: Two rotor rings and hardware kit• Sold/priced per pair Girodisc D1-123 Mercedes 390mm Front Replacement Ring FAQs Can these fit the factory AMG rotor hats? No. The D1-123 rings are designed exclusively for Girodisc aluminum hats and cannot mount to OEM one-piece or carbon-ceramic assemblies. What pad compounds pair best with these rotors? For street and light track use, Ferodo DS2500 or Pagid RS29 pads perform well. For dedicated track work, use Pagid RSL1 or Endless ME20 for optimal friction and fade resistance. Do these rotors require a specific bedding process? Yes. Perform 8–10 moderate stops from 60 mph to evenly transfer pad material, then allow the brakes to cool completely before hard use. Are these rotors directional? Yes. Each ring is labeled for left or right installation to ensure proper airflow through the internal vanes for maximum cooling. Upgrade your AMG’s braking capability with Girodisc D1-123 390mm front replacement rings — engineered for performance, heat control, and reliability under the most demanding conditions.

GiroDisc Racing Brakes & Technologies D1-163 Girodisc 390x34mm Front Replacement Rings $1,030.00

Girodisc 390x34mm Front Rings Service your performance braking system with Girodisc D1-163 390x34mm front replacement rings. These precision-machined components bolt directly to your existing Girodisc aluminum hats using the supplied floating hardware kit. Each ring is crafted from Girodisc’s proprietary high-carbon cast iron alloy to ensure exceptional heat dissipation, consistent friction characteristics, and long-term reliability under heavy braking loads. Vehicle Fitment Compatible with:• Custom and motorsport applications using Girodisc 390x34mm two-piece front rotors• Commonly fitted to upgraded systems on Porsche, BMW, and Audi track platforms using large six-piston calipersNote: Designed exclusively for Girodisc 390x34mm two-piece front rotor systems. Verify hat bolt pattern and offset before installation. Features • Sold as a left/right pair with complete floating hardware kit• Direct replacements for Girodisc 390x34mm two-piece front rotors• CNC-machined from high-carbon cast iron for optimal thermal stability• Directional curved vanes channel airflow for maximum cooling• Maintains proper brake bias and ABS calibration• Precision-balanced to prevent vibration or pulsation• Designed exclusively for Girodisc aluminum hats Specifications • Diameter: 390 mm• Thickness: 34 mm• Position: Front• Material: High-carbon cast iron• Mount type: Floating two-piece system• Includes: Two rotor rings and new hardware kit• Sold/priced per pair Girodisc D1-163 Front Replacement Ring FAQs What cars typically use this 390x34mm rotor size? This ring size is common on large six-piston BBK setups from Brembo, AP Racing, and StopTech used on Porsche 991, BMW F8X, and Audi RS applications when fitted with Girodisc hats. Can these be installed on non-Girodisc hats? No. The mounting pattern and float hardware are specific to Girodisc aluminum hats. Using other hats may cause clearance or balance issues. What torque should I apply to the floating hardware? Torque each bolt to 12 ft-lbs (16 Nm) with blue Loctite. Recheck after the first heat cycle to ensure hardware seating. How do I know when it’s time to replace the rings? Replace when rotor thickness reaches the minimum spec or if radial cracking extends beyond 70% of the face slot length — whichever occurs first. Girodisc D1-163 390x34mm front replacement rings deliver precision, durability, and race-proven performance for drivers demanding the highest level of stopping power and thermal control.

GiroDisc Racing Brakes & Technologies D1-238 Girodisc 380mm Front Replacement Rings $1,030.00

Girodisc Porsche 991 Cup, GT4 Clubsport Front Replacement Rings (380x32) Restore the elite braking performance of your Porsche Cup or Clubsport with Girodisc D1-238 380x32mm front replacement rings. Engineered for uncompromising precision, these rings bolt directly to your existing Girodisc aluminum hats using the included floating hardware kit. Crafted from high-carbon cast iron, they provide superior heat management, fade resistance, and consistent pedal feel under extreme race conditions. Vehicle Fitment Compatible with:• Porsche 991 Cup (2013–2019, front)• Porsche 981 GT4 Clubsport (front)• Porsche 718 GT4 Clubsport (front)Note: Designed exclusively for Girodisc 380x32mm two-piece front rotor systems. Not compatible with OEM PCCB or one-piece rotors. Features • Sold as a left/right pair with full floating hardware kit• Direct replacements for Girodisc 380x32mm two-piece front rotors• CNC-machined from proprietary high-carbon cast iron for superior strength and cooling• Directional curved vanes maximize airflow and heat dissipation• Balanced and precision-machined for vibration-free performance• Maintains factory brake bias and ABS calibration• Designed exclusively for Girodisc aluminum hats – not compatible with OEM or other brands Specifications • Diameter: 380mm• Thickness: 32mm• Position: Front• Material: High-carbon cast iron• Mount type: Floating two-piece system• Includes: Two rotor rings and new hardware kit• Sold/priced per pair Girodisc D1-238 Porsche 991 Cup / GT4 Clubsport Front Replacement Ring FAQs Do these fit factory Porsche Cup rotor hats? No. The D1-238 rings are designed exclusively for Girodisc aluminum hats and will not mount to OEM or AP Racing hats. Can they handle sustained race heat cycles? Absolutely. Girodisc’s high-carbon alloy and curved vane design deliver outstanding thermal capacity for endurance and sprint racing. Are these compatible with the Porsche 718 GT4 Clubsport? Yes. They fit all 981 and 718 GT4 Clubsport models equipped with 380x32mm front Girodisc systems. How do they compare to OEM Cup rotors? Girodisc rotors offer reduced unsprung weight, lower running costs, and more consistent friction characteristics under repeated braking. Upgrade your Porsche 991 Cup or GT4 Clubsport with Girodisc D1-238 380x32mm front replacement rings — precision-engineered for cooling, endurance, and repeatable braking control lap after lap.

GiroDisc Racing Brakes & Technologies D2-238 Girodisc 380mmm Rear Replacement Rotor Rings $1,030.00

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 Racing Brakes & Technologies D2-174 Girodisc Acura NSX Rear Replacement Rings $1,030.00

Girodisc Acura NSX Rear Replacement Rings Refresh your Acura NSX’s braking performance with Girodisc 350mm rear replacement rings. Built for precision and endurance, these high-carbon iron rings are direct replacements for Girodisc two-piece rotors, maintaining your NSX’s balance of power, control, and stopping confidence. Vehicle Fitment Compatible with:• 2017–2022 Acura NSX (NC1)• 1991–2005 Acura NSX (with Girodisc or compatible 350mm rear rotor systems)Note: These are friction rings only. They mount directly to existing Girodisc aluminum hats using the included floating hardware kit. Precision-Built for Consistent Braking Each Girodisc replacement ring is cast from a proprietary high-carbon iron alloy and machined to exacting tolerances in the USA. The rotor’s directional curved vane design acts as a centrifugal air pump, drawing cooling air through the rotor to reduce heat buildup and prevent brake fade. Whether you’re carving backroads or pushing your NSX to its limits on track, Girodisc ensures reliable braking with smooth pedal feedback and long-term durability. Features • Direct replacement for 350mm Girodisc rear rotor assemblies• Designed for Acura NSX (NC1) and earlier models equipped with Girodisc systems• High-carbon cast iron delivers superior heat stability and longevity• Curved directional vanes maximize airflow and cooling• Precision machined and balanced in the USA• Includes full floating hardware kit• Sold/priced per pair Specifications • Diameter: 350mm• Position: Rear• Material: High-carbon cast iron• Includes: Two rotor rings and full hardware kit• Made in the USA• Sold/priced per pair Girodisc D2-174 Replacement Ring FAQs Will these fit factory NSX brake setups? No. These are designed for use with Girodisc two-piece rotor systems or equivalent aftermarket aluminum hats. Do these include new hardware? Yes. Each set includes new floating hardware—pins, bolts, and washers—for a complete, ready-to-install replacement. Are these compatible with both NSX generations? Yes. They fit directly on second-gen (NC1) NSX models and first-gen NSX cars equipped with Girodisc 350mm rear brake kits. What makes Girodisc rotors better than OEM? Girodisc rotors are lighter, cooler-running, and fully serviceable. The two-piece design allows you to replace just the iron rings instead of the entire rotor assembly, saving cost over time. Upgrade your NSX’s stopping power with Girodisc D2-174 350mm rear replacement rings — race-proven performance, precision manufacturing, and American quality in every set.

GiroDisc Racing Brakes & Technologies D1-174 Girodisc Acura NSX Front Replacement Rings $1,030.00

Girodisc Acura NSX Front Replacement Rings Bring your Acura NSX braking system back to peak performance with Girodisc 370mm front replacement rings. Designed as direct replacements for existing Girodisc two-piece rotor assemblies, these high-carbon iron rings deliver the heat control, balance, and precision stopping power the NSX platform demands. Vehicle Fitment Compatible with:• 2017–2022 Acura NSX (NC1)• 1991–2005 Acura NSX (with Girodisc or comparable 370mm big brake kit)Note: These are friction rings only. They attach directly to existing Girodisc aluminum hats using the supplied hardware kit. Engineered for Performance and Longevity Each Girodisc replacement ring is made from a proprietary high-carbon cast iron alloy, developed to handle the extreme heat and stress of performance driving. Precision-machined and balanced in the USA, these rings feature a curved vane internal design that acts as a centrifugal air pump, drawing air through the rotor to maintain consistent cooling under high-speed braking. Whether you’re on canyon roads or the track, Girodisc ensures consistent pedal feel and fade-free braking. Features • Direct replacement for 370mm Girodisc front rotor assemblies• Designed for Acura NSX (NC1) and earlier models with Girodisc big brake kits• High-carbon iron construction for thermal stability and durability• Curved directional vanes improve airflow and cooling• Machined, balanced, and finished in the USA• Includes new floating hardware kit• Sold/priced per pair Specifications • Diameter: 370mm• Position: Front• Material: High-carbon cast iron• Includes: Two rotor rings and full hardware kit• Made in the USA• Sold/priced per pair Girodisc D1-174 Replacement Ring FAQs Are these compatible with OEM NSX rotors? No. These replacement rings are designed specifically for Girodisc two-piece rotor systems or equivalent aluminum-hat setups. Do they include hardware? Yes. Each pair ships with a complete hardware kit including floating pins, washers, and bolts. Will these work on both first- and second-generation NSX models? They fit directly on the second-gen NSX (NC1) and first-gen models equipped with Girodisc 370mm rotor systems or compatible hats. Are these suitable for track driving? Absolutely. Girodisc rotors are built for high-performance and endurance use, maintaining stable braking through repeated high-heat cycles. Restore the legendary stopping power of your NSX with Girodisc D1-174 370mm front replacement rings — precision-engineered, American-made, and built for uncompromising performance.