GiroDisc Racing Brakes & Technologies
A2-091 Girodisc Ford S197 Mustang GT500 ('13–14) Rear Rotors
$995.00
Girodisc Ford S197 Mustang GT500 ('13-14) Rear Rotors
These Girodisc 2-piece floating rear rotors are a direct replacement for the 2013–2014 Ford Mustang GT500 with the 5.8L engine and 350mm rear rotors. Designed for high-performance driving and track use, this upgrade offers superior cooling efficiency, reduced weight, and improved durability over factory components.
Each assembly features a thicker 22mm rotor ring compared to the factory 19mm setup, providing enhanced heat capacity without requiring any modifications. The fully floating design reduces unsprung and rotational mass, improving suspension response and braking consistency under heavy use.
Race-Inspired Design and Materials
Each rotor ring is machined from Girodisc’s proprietary high-carbon iron alloy, engineered for superior thermal stability and resistance to cracking under repeated heat cycles. The 48 curved directional vanes function as internal air pumps, drawing cooling air through the center to effectively dissipate heat during braking.
The hat is precision-machined from 6061-T6 aluminum and finished with a black anodized coating for corrosion protection and weight reduction. The floating system employs cadmium-plated steel drive pins, Belleville washers, and spring clips to ensure quiet operation and proper axial/radial float—ideal for both street and track use.
Vehicle Fitment
Ford Mustang GT500 5.8L (2013–2014)
Can be retrofitted to other S197 Mustangs with the correct 350mm rear brake components
Technical Specifications
Part Number: A2-091
Position: Rear
Rotor Diameter: 350mm
Rotor Thickness: 22mm (OEM 19mm)
Minimum Thickness: 20mm
Material: High-carbon cast iron rotor, 6061-T6 aluminum hat
Vane Design: 48 curved directional vanes
Drive Pins: Cadmium-plated high-strength steel
Weight: Lightweight 2-piece design reduces unsprung mass
Sold/Price: Per pair
FAQs for Girodisc A2-091
Will these fit my non-GT500 Mustang? These are designed for the 2013–2014 GT500 5.8L. They can be retrofitted to other S197 Mustangs if upgraded to the 350mm rear brake configuration.
Do these require any modifications? No modifications are needed on the 2013–2014 GT500. For retrofits, ensure you have the correct calipers, brackets, and hardware.
Are they rebuildable? Yes. The rotor rings can be replaced using Girodisc part number D2-091 once they reach minimum thickness or show wear.
Will they make noise during normal driving? No. The Belleville washers and spring clips maintain tight hardware alignment to eliminate rattling, even during street use.
Upgrade your GT500’s braking performance with Girodisc’s precision-engineered 2-piece floating rotors—trusted by racers and performance drivers for their reliability, cooling capacity, and long-term durability.
GiroDisc Racing Brakes & Technologies
A2-095 Girodisc Subaru WRX STI ('08–'17) Rear Rotors
$950.00
Girodisc Subaru WRX STI Rear Rotors
Designed for enthusiasts who demand faster response and greater stopping consistency, Girodisc rear rotors for the 2008–2017 Subaru WRX STI combine lightweight performance with race-proven cooling technology. These two-piece floating rotors deliver improved balance, heat control, and durability—ideal for both spirited street driving and track days.
Vehicle Fitment
Subaru WRX STI (2008–2017)Compatible with OEM Brembo rear calipers and factory parking brake system.
Lightweight, High-Performance Design
The Girodisc system bolts directly to factory hubs. Some OEM and aftermarket brake pads require minor modification to clear the hardware while retaining the stock parking brake. This simple adjustment involves slightly grinding the backing plate to match the pad’s arc, and full instructions are included. Pads supplied by Girodisc for this application are already CNC-modified for a direct fit.
Each rotor assembly combines a 6061-T6 aluminum hat with Girodisc’s proprietary cast-iron friction ring, cast and machined in the USA. The curved internal vane structure acts as a centrifugal pump, pulling air through the rotor to maximize cooling and reduce fade. At only 11 lbs each versus 18 lbs stock, these rotors significantly reduce unsprung and rotational weight for sharper handling and quicker acceleration.
Features
• Direct replacement for OEM rotors – minor pad modification may be required• 6061-T6 billet aluminum hats, hard-anodized for corrosion resistance• Proprietary cast-iron friction rings cast and machined in the USA• Floating mount system with cadmium-plated steel drive pins• Anti-noise spring washers prevent rattle while maintaining float• Curved vane design enhances airflow and cooling• 11 lbs per rotor vs. 18 lbs OEM – reduces unsprung mass by 7 lbs each• Fully rebuildable – replace only the iron rings when worn• Sold/priced per pair
Girodisc A2-095 Rear Rotor FAQs:
Do these rotors require modification to install? The rotors themselves bolt directly on. However, some brake pads require minor backing plate modification to clear the hardware. Full instructions are provided, and Girodisc pads are pre-machined for plug-and-play use.
Will these rotors retain my factory parking brake? Yes. Girodisc specifically designed this setup to keep full functionality of the OEM parking brake system.
How much weight savings can I expect? Each Girodisc rotor is approximately 7 lbs lighter than stock, reducing rotational inertia and improving suspension response.
Are these suitable for track days or street use? Absolutely. These rotors are engineered for both daily driving and high-performance conditions, providing better cooling and fade resistance under load.
Upgrade your Subaru WRX STI with Girodisc rear rotors for lighter, cooler, and more consistent braking performance—precision-built to handle everything from mountain roads to race circuits.
GiroDisc Racing Brakes & Technologies
A2-097 Girodisc Lamborghini Murciélago (’05+) 355mm Rear Rotors
$1,400.00
Girodisc Lamborghini Murciélago ('05+) 355mm Rear Rotors
Bring modern braking precision to your later-generation Murciélago with Girodisc’s 355mm rear rotors. Designed for high-speed performance and durability, these two-piece rotors improve cooling, reduce unsprung weight, and deliver consistent stopping power—perfectly matching the demands of Lamborghini’s legendary V12 supercar.
Vehicle Fitment
Lamborghini Murciélago (2005–2010)Murciélago LP640 / LP670-4 SVDirect replacement for OEM 355mm rear rotors using factory calipers and hardware.
Precision Engineering for Supercar Performance
The Girodisc system is a direct OEM replacement that installs with no modifications required. Each rotor features a 6061-T6 aluminum hat combined with Girodisc’s proprietary cast-iron friction ring, cast and machined entirely in the USA. The two-piece floating design allows controlled thermal expansion for better heat dissipation and pedal consistency. Internal curved vanes act as centrifugal pumps, pulling air through the disc to reduce temperature and prevent brake fade during intense driving.
Features
• Direct OEM replacement – no adapters or modifications required• 6061-T6 billet aluminum hats with a hard-anodized finish• Proprietary cast-iron friction rings, U.S. cast and machined• Floating mount system with 10 cadmium-plated steel drive pins• Anti-noise spring washers maintain float while eliminating rattle• Curved vane internal design maximizes cooling airflow• Approx. 18.2 lbs vs. 22 lbs OEM – saves nearly 4 lbs per rotor• Reduces unsprung and rotational weight for faster suspension response• Fully rebuildable – replace only the friction rings when worn• Sold/priced per pair
Girodisc A2-097 Rear Rotor FAQs:
Are these rotors a direct fit for the 2005+ Murciélago? Yes. They bolt directly to the factory hubs and calipers, maintaining OEM geometry and brake balance.
What’s the advantage over OEM rotors? Girodisc rotors weigh about 4 lbs less per corner, improving acceleration, steering response, and cooling efficiency without sacrificing strength.
Can I use them with factory pads? Absolutely. These rotors work with OEM or performance iron-compatible pads, making them ideal for both street and track use.
Do these rotors affect ABS or traction control? No. The Girodisc design maintains factory specifications and works seamlessly with all electronic brake systems.
Upgrade your Lamborghini Murciélago with Girodisc’s 355mm rear rotors—precision-engineered for lighter weight, superior cooling, and uncompromising performance.
GiroDisc Racing Brakes & Technologies
A2-098 Girodisc Lamborghini Murciélago (’02–’04) 335mm Rear Rotors
$1,400.00
Girodisc Lamborghini Murciélago ('02–'04) 335mm Rear Rotors
Enhance the stopping power of your early-generation Lamborghini Murciélago with Girodisc’s lightweight two-piece rear rotors. Engineered for precision and durability, these rotors provide superior cooling and responsiveness while maintaining OEM fit, brake bias, and ABS performance. Perfect for drivers who demand world-class braking without the weight penalty.
Vehicle Fitment
Lamborghini Murciélago (2002–2004)335mm rear rotor applicationDirect replacement for OEM rear rotors using factory calipers and hardware.
Performance and Craftsmanship in Every Detail
The Girodisc system installs directly onto factory hubs—no modifications required. Each rotor features a 6061-T6 aluminum hat paired with Girodisc’s proprietary cast-iron friction ring, both made and machined in the USA. The floating two-piece design allows the rotor to expand under heat without warping, maintaining consistent pedal feel and pad contact. Curved internal vanes act as centrifugal pumps, drawing air through the disc to keep braking temperatures stable. With a weight savings of nearly 4 pounds per rotor, these units improve acceleration and suspension response while reducing thermal stress.
Features
• Direct OEM replacement—no adapters or modifications required• 6061-T6 billet aluminum hats with hard-anodized finish• Proprietary cast-iron friction rings, poured and machined in the USA• Floating mount system with 10 cadmium-plated steel drive pins• Anti-noise spring washers prevent rattle while maintaining float• Curved vane internal design enhances cooling efficiency• Approximately 18.2 lbs vs. 22 lbs OEM – saves nearly 4 lbs per rotor• Fully rebuildable—replace only the iron rings when worn• Sold/priced per pair
Girodisc A2-098 Rear Rotor FAQs:
Are these rotors a direct fit for my 2002–2004 Murciélago? Yes. They bolt directly to the factory hubs and work seamlessly with OEM calipers and hardware—no changes required.
How much lighter are these than stock rotors? Each Girodisc rear rotor weighs about 18.2 lbs compared to the factory’s 22 lbs, saving roughly 4 lbs per corner in unsprung weight.
Will these affect my car’s ABS or traction systems? No. Girodisc rotors preserve OEM geometry and weight distribution, maintaining full compatibility with factory systems.
Are these suitable for high-performance driving? Absolutely. Designed using motorsport principles, these rotors deliver consistent braking performance under repeated high-temperature conditions.
Upgrade your Lamborghini Murciélago with Girodisc rear rotors—precision-engineered for reduced weight, superior cooling, and confidence-inspiring braking control.
GiroDisc Racing Brakes & Technologies
A2-100 Girodisc Audi B7 RS4 Rear Rotors
$995.00
Girodisc Audi B7 RS4 Rear Rotors
Bring modern performance and race-proven engineering to your Audi B7 RS4 with Girodisc’s lightweight two-piece rear rotors. Designed as a direct OEM replacement, these rotors deliver improved heat management, sharper braking response, and reduced unsprung weight—all while preserving your factory brake balance and ABS function.
Vehicle Fitment
Audi RS4 (B7, 2006–2008)Compatible with OEM rear calipers and factory hardware.
Precision-Crafted Braking Performance
The Girodisc system installs directly onto factory hubs—no modifications required. Each rotor combines a CNC-machined 6061-T6 aluminum hat with Girodisc’s proprietary cast-iron friction ring, both designed and machined in the USA. The floating two-piece construction allows for independent thermal expansion between the rotor and hat, preventing warping and maintaining consistent pedal feel. Curved internal vanes act as centrifugal pumps to draw air through the disc, enhancing cooling and stability during aggressive driving or track use.
Features
• Direct OEM replacement – no adapters or modifications required• 6061-T6 billet aluminum hats with hard-anodized finish• Proprietary cast-iron friction rings, poured and machined in the USA• Floating mount system with 10 cadmium-plated steel drive pins• Anti-noise spring washers eliminate rattle and ensure smooth float• Curved vane design improves airflow and temperature control• Lighter than OEM rotors, reducing unsprung and rotational mass• Fully rebuildable – replace only the iron rings when worn• Sold/priced per pair
Girodisc A2-100 Rear Rotor FAQs:
Are these rotors a direct replacement for OEM? Yes. They bolt directly to the factory hubs and work with OEM calipers, pads, and hardware—no modifications required.
How much weight do these save over stock rotors? Girodisc rotors are several pounds lighter per corner, reducing unsprung mass for quicker suspension response and improved handling.
Can I use them with OEM brake pads? Absolutely. They are compatible with factory pads or performance compounds for both street and track use.
Are these suitable for track days? Yes. Girodisc rotors are engineered to handle repeated heat cycles with superior cooling and consistency, making them ideal for spirited driving or track use.
Upgrade your Audi B7 RS4 with Girodisc rear rotors—crafted for balance, precision, and performance worthy of the RS badge.
GiroDisc Racing Brakes & Technologies
A2-102 GGirodisc Ferrari F430 Challenge Rear Rotors
$1,900.00
Girodisc Ferrari F430 Challenge Rear Rotors
Purpose-built for the Ferrari F430 Challenge, these Girodisc rear rotors deliver uncompromising braking performance, thermal stability, and serviceability for track environments. Designed as a direct replacement for the original rotors, they provide improved cooling and reduced unsprung mass while maintaining OEM fit and balance.
Vehicle Fitment
Ferrari F430 ChallengeDirect OEM replacement for factory iron rear rotorsCompatible with original Brembo race calipers and hardware.
Track-Tested Engineering
The Girodisc system bolts directly to factory hubs with no modifications required. Each rotor features a precision-machined 6061-T6 aluminum hat mated to Girodisc’s proprietary cast-iron friction ring—poured, machined, and assembled entirely in the USA. The curved vane internal design acts as a centrifugal pump, pulling air through the rotor to keep temperatures stable under prolonged braking loads. The floating hardware maintains even pad contact, improves modulation, and prevents warping, ensuring reliability through long race sessions.
Features
• Direct OEM replacement – bolts to factory hardware• 6061-T6 billet aluminum hats with hard-anodized finish• Proprietary high-carbon cast-iron rings for exceptional durability• Floating mount system with cadmium-plated steel drive pins• Anti-noise spring washers eliminate rattle while maintaining float• Curved vane design optimizes airflow and cooling efficiency• Fully rebuildable – replace only the iron rings when worn• Manufactured and assembled in the USA• Sold/priced per pair
Girodisc A2-102 Rear Rotor FAQs:
Are these rotors a direct fit for the Ferrari F430 Challenge? Yes. They are designed as a precise bolt-on replacement using the stock Brembo racing calipers and factory hardware.
Do I need to modify my brake system? No. The Girodisc rotors maintain the OEM dimensions, ensuring perfect compatibility with your existing setup.
Can these be used on street-driven F430 models? These are specifically designed for track-only Challenge cars; for road-going F430 models, Girodisc offers a separate rotor fitment.
What are the advantages over stock rotors? Girodisc rotors offer better cooling, lighter weight, and a rebuildable design—ideal for endurance and sprint racing applications.
Equip your Ferrari F430 Challenge with Girodisc rear rotors—precision-engineered for endurance, balance, and unmatched performance on the circuit.
GiroDisc Racing Brakes & Technologies
A2-103 Girodisc Porsche 993 Carrera 4S, RS, Turbo Rear Rotors
$1,250.00
Girodisc Porsche 993 Carrera 4S, RS, Turbo Rear Rotors
Engineered for the final generation of air-cooled 911s, Girodisc rear rotors for the Porsche 993 Carrera 4S, RS, and Turbo bring modern performance to classic precision. These lightweight, two-piece floating rotors are designed as a direct OEM replacement, offering improved cooling, reduced unsprung weight, and exceptional brake balance without altering factory components.
Vehicle Fitment
Porsche 911 (993) Carrera 4SPorsche 911 (993) RSPorsche 911 (993) TurboCompatible with OEM calipers and factory mounting hardware.
Classic Porsche Balance Meets Modern Braking Engineering
The Girodisc system bolts directly to the factory hubs—no modifications necessary. Each rotor features a lightweight 6061-T6 aluminum hat paired with Girodisc’s proprietary cast-iron friction ring, precision-machined in the USA. The curved internal vane design acts as a centrifugal pump, drawing air through the disc for superior heat management during spirited driving. The floating mount system maintains even pad contact, eliminates distortion under heat, and enhances pedal consistency for both street and track use.
Features
• Direct OEM replacement – installs with no modifications• 6061-T6 billet aluminum hats with hard-anodized finish• Proprietary cast-iron friction rings, poured and machined in the USA• Floating mount system with 10 cadmium-plated steel drive pins• Anti-noise spring washers prevent rattle and ensure smooth float• Curved vane design improves airflow and heat dissipation• Significantly lighter than OEM rotors for better suspension response• Fully rebuildable – replace only the iron rings when worn• Sold/priced per pair
Girodisc A2-103 Rear Rotor FAQs:
Do these rotors fit all Porsche 993 Turbo and Carrera 4S models? Yes. They are a direct bolt-on for all 993 Carrera 4S, RS, and Turbo models using OEM calipers and hardware.
Are these rotors lighter than factory units? Absolutely. Each Girodisc rotor sheds several pounds compared to OEM cast iron, reducing unsprung weight and improving steering response.
Can I use OEM pads with these rotors? Yes. They are fully compatible with factory pads, as well as most performance compounds designed for iron discs.
Are these suitable for both street and track driving? Yes. The Girodisc design offers quiet, smooth operation for street use and consistent fade-free performance during aggressive driving or track days.
Give your air-cooled Porsche the braking performance it deserves with Girodisc rear rotors—precision-built to complement the timeless 993 chassis.
GiroDisc Racing Brakes & Technologies
A2-110 Girodisc Ferrari 360 CS, F430, Scuderia Rear Iron Rotor Conversion
$1,900.00
Girodisc Ferrari 360 CS, F430, Scuderia Rear Iron Rotor Conversion
Transform your Ferrari’s braking performance with Girodisc’s rear iron rotor conversion, engineered for the 360 Challenge Stradale, F430, and Scuderia. Designed as a direct replacement for the factory carbon ceramic rotors, this system delivers consistent braking feel, lower long-term maintenance costs, and superior heat management under demanding conditions.
Vehicle Fitment
Ferrari 360 Challenge StradaleFerrari F430Ferrari 430 ScuderiaDirect replacement for factory carbon ceramic rear rotors using OEM calipers and hardware.
Engineered for Precision and Longevity
The Girodisc system installs directly onto factory hubs with no modifications required. Each two-piece assembly combines a lightweight 6061-T6 aluminum hat with Girodisc’s proprietary cast-iron friction ring—cast, machined, and assembled in the USA. The curved vane internal structure acts as a centrifugal pump, pulling air through the rotor to optimize cooling and prevent fade during high-performance driving. Floating hardware allows for controlled expansion under heat, ensuring consistent pad contact and a stable pedal feel.
Features
• Direct replacement for OEM carbon ceramic rear rotors• 6061-T6 billet aluminum hats with hard-anodized finish• Proprietary cast-iron friction rings, made in the USA• Floating mount system with cadmium-plated steel drive pins• Anti-noise spring washers eliminate rattle while maintaining float• Curved vane design maximizes airflow and heat dissipation• Improved pedal modulation and braking consistency• Fully rebuildable – replace only the iron rings when worn• Sold/priced per pair
Girodisc A2-110 Rear Iron Rotor Conversion FAQs:
Why convert from carbon ceramic to iron rotors? Girodisc’s iron conversion offers more consistent braking at high temperatures, lower replacement costs, and improved serviceability while maintaining excellent performance.
Are these compatible with OEM calipers? Yes. They bolt directly to the stock hubs and work perfectly with the original Ferrari Brembo calipers and hardware.
Do these rotors require any special pads? You can use standard iron-compatible pads. It’s recommended to install fresh pads matched for iron rotors when performing the conversion.
Can I switch back to carbon ceramic later? Yes. This conversion does not alter the hub or caliper setup, so reverting to OEM carbon ceramic rotors is fully reversible.
Upgrade your Ferrari’s braking confidence and consistency with Girodisc’s iron rotor conversion—precision-engineered for performance, durability, and factory fitment.
GiroDisc Racing Brakes & Technologies
A2-111 Girodisc 2pc Rear Brake Rotors (Garage Sale)
$1,425.66
$1,900.00
Girodisc A2-111 Two-Piece Rear Brake Rotors (Discontinued Design)
Discontinued New old stock rotor. These have the straight grooves as images show, not the new curved grooves. Final Sale, no returns or exchanges.
Competition Motorsport is an authorized dealer for Girodisc products and we are one of the largest stocking dealers in the country. We ship most products same or next business day to ensure we meet your delivery deadline.
The Girodisc system is an upgrade to a two-piece steel rotor and aluminum hat combination and is a direct replacement for the OEM brake disc. The two-piece floating disc will bolt directly to the car and work with OEM calipers perfectly. By upgrading your brakes with these lightweight high-performance replacements as opposed to a big brake kit, your factory bias is maintained as well as your ABS efficiency. The Girodisc rotors are lighter than OEM Ferrari parts. The reduction in rotational and unsprung weight allows for quicker acceleration and suspension response.
When used with Pagid or PFC performance brake pads, and Competition Motorsport RF-1 brake fluid, you have an amazing solution to overheating, cracking and warping rotors.
The central hat section of the disc is made from 6061-T6 aircraft specification aluminum. The disc is manufactured from cast iron which is constructed in the USA and is made to the same specification with the same material used by professional racing organizations. The rotor's curved vane design was developed in racing, acting as a centrifugal pump to force cooling air through the disc.
The rotor and hat mount together through a floating mount system which utilizes 8-10 high strength alloy steel drive pins manufactured by Girodisc in the USA and cadmium plated for corrosion resistance. The alloy drive pins transfer the load from braking while maintaining the axial and radial float between the disc rotor and hat. The pins are secured by Grade 12 cap screws with hardened washers and mounted with anti-noise spring washers to allow for heat expansion while eliminating the rattle and noise associated with floating rotors.
The two-piece Girodisc design allows for rotor only replacement as well to minimize future replacement costs and deliver outstanding performance and cooling.
Sold/priced per pair.
GiroDisc Racing Brakes & Technologies
A2-111 Girodisc Ferrari 458, F12, FF, GTC4 Lusso Rear Rotors
$1,900.00
Girodisc Ferrari 458, F12, FF, GTC4Lusso Rear Rotors
Girodisc rear rotors for Ferrari’s most celebrated V8 and V12 models offer precision braking performance worthy of Maranello’s finest. Engineered as a direct OEM replacement, these rotors reduce unsprung weight, enhance heat control, and deliver a more consistent pedal feel under high-speed braking.
Vehicle Fitment
Ferrari 458 Italia / 458 Spider / 458 SpecialeFerrari F12berlinettaFerrari FFFerrari GTC4LussoCompatible with OEM calipers and factory hardware.
Precision Engineering, Race-Inspired Design
The Girodisc system bolts directly to the factory hubs—no modifications required. Each two-piece rotor combines a U.S.-sourced 6061-T6 aluminum hat with Girodisc’s proprietary cast-iron friction ring, providing superior heat management and durability. The curved vane design acts as a centrifugal pump, moving cooling air through the rotor to stabilize temperatures during aggressive driving. This advanced construction ensures consistent brake torque and extended component life, whether on the street or circuit.
Features
• Direct OEM replacement – no adapters or modifications required• 6061-T6 billet aluminum hats, hard-anodized for corrosion resistance• Proprietary cast-iron friction rings, cast and machined in the USA• Floating mount system with cadmium-plated steel drive pins• Anti-noise spring washers prevent rattle while maintaining float• Curved vane internal design enhances airflow and cooling efficiency• Reduces unsprung mass for improved handling response• Fully rebuildable—replace only the friction rings when worn• Sold/priced per pair
Girodisc A2-111 Rear Rotor FAQs:
Are these rotors compatible with both V8 and V12 Ferrari models? Yes. They fit the 458, F12, FF, and GTC4Lusso using factory hardware and OEM calipers with no modifications required.
Will these work with factory carbon ceramic brakes? No. These are designed for vehicles originally equipped with iron rotors. For PCCB conversions, a specific Girodisc kit is required.
Do they improve braking feel? Absolutely. Expect better modulation, faster heat recovery, and improved pedal consistency thanks to reduced rotational mass and optimized cooling.
Are they suitable for track use? Yes. Girodisc rotors are engineered to handle repeated high-temperature cycles typical of spirited track driving or heavy road use.
Experience race-level braking performance in your Ferrari with Girodisc’s lightweight rear rotors—precision-built to balance power, control, and refinement.
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
A2-119 Girodisc Lamborghini Aventador Rear Rotors
$1,995.00
Girodisc Lamborghini Aventador Rear Rotors
Developed for one of the most demanding supercars ever built, Girodisc rear rotors for the Lamborghini Aventador deliver exceptional heat control, lower weight, and improved braking consistency. These rotors are a direct OEM replacement, engineered for drivers who expect race-level precision with factory refinement.
Vehicle Fitment
Lamborghini Aventador LP700-4 (2011–2016)Lamborghini Aventador S (2017–2020)Lamborghini Aventador SV / SVJ (2016–2022)Compatible with OEM Brembo rear calipers and hardware.
Engineered for Supercar-Level Braking
The Girodisc system bolts directly to factory hubs—no modifications required. Each two-piece rotor features a lightweight 6061-T6 aluminum hat mated to Girodisc’s proprietary cast-iron friction ring. The floating design allows the rotor to expand evenly under extreme temperatures, maintaining pad alignment and consistent pedal feedback. Internal curved vanes act as centrifugal pumps, drawing air through the disc to maximize cooling efficiency during high-speed braking.
Features
• Direct OEM replacement—no adapters or modifications needed• 6061-T6 billet aluminum hats with hard-anodized finish• Proprietary high-carbon cast-iron rings cast and machined in the USA• Floating mount system with 12 cadmium-plated steel drive pins• Anti-noise spring washers prevent rattle and ensure smooth operation• Curved vane internal design improves airflow and cooling• Lighter than OEM rotors for reduced unsprung weight• Fully rebuildable—replace only the friction rings when worn• Sold/priced per pair
Girodisc A2-119 Rear Rotor FAQs:
Are these rotors a direct replacement for OEM? Yes. They bolt directly to the factory hubs and calipers, maintaining OEM geometry and full compatibility with Aventador braking systems.
Do these rotors affect ABS or traction control? No. Girodisc rotors preserve the original rotor dimensions and weight distribution, ensuring seamless integration with factory electronics.
What benefits will I see over stock carbon or iron rotors? Girodisc rotors offer improved cooling, smoother pedal feel, and rebuildable construction—ideal for track use or high-performance street driving.
Can they handle extended high-temperature operation? Absolutely. The floating design and curved vane cooling system allow these rotors to manage repeated high-speed stops without fade or distortion.
Bring race-proven precision to your Aventador with Girodisc rear rotors—crafted for strength, serviceability, and supercar-worthy braking performance.
GiroDisc Racing Brakes & Technologies
A2-123 Girodisc 2pc Rear Brake Rotors (Garage Sale)
$1,087.66
$1,450.00
A2-123 Girodisc 2pc Rear Brake Rotors (Discontinued Design)
Discontinued New old stock rotor. These have the straight grooves as images show, not the new curved grooves. Final Sale, no returns or exchanges.
Competition Motorsport is an Authorized dealer for GiroDisc products and we are one of the largest stocking dealers in the country. We ship most products same or next business day to ensure we meet your delivery deadline.
Fits Mercedes SLS AMG
The GiroDisc system is an upgrade to a 2-piece steel rotor and aluminum hat combination and is a direct replacement for the OEM brake disc. The 2-piece floating disc will bolt directly to the car and work with OEM calipers perfectly. By upgrading your brakes with these lightweight high-performance replacements as opposed to a big brake kit, your factory bias is maintained as well as your ABS efficiency. The Giro Disc rotors are lighter than OEM pieces. The reduction in rotational and unsprung weight (approx. 8 lbs) allows for quicker acceleration and suspension response.
When used with Pagid or PFC performance brake pads, and Competition Motorsport RF-1 brake fluid (also available from CompetitionMotorsport.com), you have an amazing solution to overheating, cracking and warping rotors.
The central hat section of the disc is made from 6061-T6 aircraft specification aluminum. The disc is manufactured from cast iron which is constructed in the USA and is made to the same specification with the same material used by professional racing organizations. The rotors curved vane design was developed in racing and acts as a centrifugal pump to force cooling air through the disc.
The rotor and hat mount together through a floating mount system which utilizes 8-10 high strength alloy steel drive pins manufactured by GiroDisc in the USA to our own specifications and are cadmium plated for corrosion resistance. The alloy drive pins transfer the load from the brake action while maintaining the axial and radial float between the disc rotor and hat. The pins are secured by grade12 cap screws with hardened washers and mounted with anti-noise spring washers to allow for heat expansion while eliminating the rattle and noise associated with floating rotors.
The 2-piece GiroDisc design allows for rotor only replacement as well to minimize future replacement costs and deliver outstanding performance and cooling.
Sold/Priced per pair.
GiroDisc Racing Brakes & Technologies
A2-123 Girodisc Mercedes SL65, SLS Rear Rotors
$1,450.00
Girodisc Mercedes SL65, SLS Rear Rotors
Precision-engineered for Mercedes-AMG’s most powerful grand tourers, these Girodisc rear rotors deliver lighter weight, improved cooling, and track-proven performance. Designed as a direct replacement for OEM components, they retain full factory compatibility while offering better pedal feedback and reduced fade under hard braking.
Vehicle Fitment
Mercedes-Benz SL65 AMG (R230 & R231)Mercedes-Benz SLS AMG (C197 & Roadster variants)Compatible with OEM Brembo calipers and hardware.
Lightweight Performance Upgrade
The Girodisc system bolts directly to the car—no modifications required. Each two-piece rotor features a CNC-machined 6061-T6 aluminum hat paired with Girodisc’s proprietary high-carbon cast-iron friction ring. The result is a lightweight, high-strength assembly that cuts unsprung mass for sharper handling and faster response. Internal curved vanes act as centrifugal pumps, forcing air through the disc to dissipate heat efficiently under repeated high-load braking.
Features
• Direct OEM replacement – no adapters or modifications required• 6061-T6 billet aluminum hats with hard-anodized finish• Proprietary cast-iron friction rings poured and machined in the USA• Floating mount system with 10 cadmium-plated drive pins• Anti-noise spring washers eliminate rattle while maintaining float• Curved vane internal design enhances airflow and cooling• Approximately 14.4 lbs vs. 22.5 lbs OEM – over 8 lbs lighter per rotor• Fully rebuildable—replace only the iron rings when worn• Sold/priced per pair
Girodisc A2-123 Rear Rotor FAQs:
Are these rotors compatible with both SL65 and SLS AMG models? Yes. Girodisc designed this setup to fit both AMG platforms perfectly, using OEM Brembo calipers and hardware without modification.
What kind of performance improvement should I expect? You’ll notice a sharper pedal response, better heat control, and reduced fade during extended braking—all while shedding over 8 lbs of unsprung weight per rotor.
Can I use my existing pads with these rotors? Absolutely. These rotors are fully compatible with OEM pads or aftermarket performance compounds.
Are Girodisc rotors suitable for everyday driving? Yes. While engineered for motorsport performance, they maintain smooth, quiet operation and exceptional longevity on the street.
Experience true AMG performance with Girodisc’s lightweight rear rotors—precision-built to enhance braking power, balance, and control without sacrificing comfort.
GiroDisc Racing Brakes & Technologies
A2-123DS Girodisc Mercedes SL65, SLS Rear Rotors (Dimpled & Slotted)
$1,550.00
Girodisc Mercedes SL65, SLS Rear Rotors (Dimpled & Slotted)
Tailored for Mercedes-AMG’s flagship performance models, these Girodisc dimpled and slotted rear rotors deliver unmatched braking consistency, fade resistance, and aesthetic appeal. Designed as a direct-fit replacement, they provide better cooling and bite without the weight penalty or cost of a big brake kit.
Vehicle Fitment
Mercedes-Benz SL65 AMG (R230 & R231)Mercedes-Benz SLS AMG (C197 & Roadster variants)Compatible with OEM Brembo calipers and factory braking systems.
Precision-Crafted Dimpled and Slotted Design
The Girodisc system bolts directly to the factory hubs—no modifications required. Each two-piece rotor features a lightweight 6061-T6 aluminum hat and Girodisc’s proprietary cast-iron friction ring, both made in the USA. The machined dimples and slots enhance pad bite and outgassing while the curved vane internal design acts as a centrifugal pump, pulling cooling air through the disc. This combination ensures stable performance and even pad wear under demanding braking conditions.
Features
• Direct OEM replacement – no modifications or adapters required• 6061-T6 billet aluminum hats with hard-anodized finish• Proprietary high-carbon cast-iron friction rings, made in the USA• Dimpled and slotted surface for improved pad bite and gas evacuation• Floating mount system with cadmium-plated steel drive pins• Anti-noise spring washers prevent rattle while maintaining float• Curved vane internal design for efficient cooling and fade resistance• Fully rebuildable—replace only the iron rings when worn• Sold/priced per pair
Girodisc A2-123DS Rear Rotor FAQs:
What’s the advantage of the dimpled and slotted design? It provides faster pad bedding, improved braking response, and helps dissipate gases and debris that build up under heavy braking, keeping pad surfaces cleaner.
Are these rotors a direct replacement for OEM? Yes. They bolt directly to factory hubs and calipers using OEM hardware—no additional parts or modifications required.
Will I notice a difference in pedal feel? Definitely. Expect a firmer, more responsive pedal under load with improved consistency during repeated high-speed stops.
Are they suitable for street use? Yes. The dimpled and slotted pattern adds performance and style while maintaining quiet, smooth operation for daily driving.
Enhance your Mercedes SL65 or SLS AMG with Girodisc’s dimpled and slotted rear rotors—precision-built for refined braking control and lasting performance.
GiroDisc Racing Brakes & Technologies
A2-126 Girodisc Porsche 997 GT3 Cup Rear Rotors
$1,350.00
Girodisc Porsche 997 GT3 Cup Rear Rotors
Developed for Porsche’s factory-built track machines, the Girodisc rear rotors for the 997 GT3 Cup deliver the strength, heat capacity, and rebuildability needed for serious motorsport use. These two-piece floating rotors are designed to handle extreme braking forces while maintaining OEM balance, pedal feel, and ABS function.
Vehicle Fitment
Porsche 911 GT3 Cup (997.1 & 997.2)Porsche 911 GT3 (997.2)Porsche 911 GT2 (997.2)Compatible with OEM Brembo calipers and both iron and PCCB factory setups.
Engineered for Race-Level Braking Performance
The Girodisc system bolts directly to the factory hubs with no modifications required. Each rotor features a U.S.-sourced 6061-T6 aluminum hat mated to Girodisc’s proprietary cast-iron friction ring. The floating two-piece design allows for thermal expansion without warping, maintaining consistent pad contact through repeated heat cycles. Internal curved vanes act as centrifugal pumps, forcing air through the disc to improve cooling during long sessions. This combination of precision machining and race-tested materials ensures maximum reliability and control on and off the track.
Features
• Direct OEM replacement for Porsche 997 GT3 Cup rear rotors• 6061-T6 billet aluminum hats with hard-anodized finish• Proprietary high-carbon cast-iron rings cast and machined in the USA• Floating mount system with 10 cadmium-plated steel drive pins• Anti-noise spring washers prevent rattle while maintaining float• Curved vane design for optimal airflow and heat dissipation• Retains OEM pad compatibility—no modification required• Fully rebuildable—replace only the iron rings when worn• Sold/priced per pair
Girodisc A2-126 Rear Rotor FAQs:
Are these compatible with both PCCB and iron brake systems? Yes. Girodisc rotors are designed to bolt directly onto 997.2 GT3 and GT2 models with either PCCB or iron setups using the same OEM calipers and pads.
Do I need to change pads when switching to these rotors? No. Unlike many aftermarket kits, these rotors are designed to use factory unmodified pads and hardware.
What advantages do Girodisc rotors offer over stock rotors? They provide better cooling efficiency, lower unsprung mass, and rebuildability—ideal for track use where consistency and serviceability matter most.
Can these rotors handle full race conditions? Absolutely. Girodisc rotors are engineered for professional-level track environments and are proven to withstand prolonged high-temperature cycles.
Equip your Porsche 997 GT3 Cup with Girodisc rear rotors for uncompromising precision, control, and endurance—built to match the car’s motorsport pedigree.
