GiroDisc Racing Brakes & Technologies
A2-232 Girodisc 2-Piece Rear Brake Rotors – Nissan GT-R
$1,450.00
Girodisc Rear Brake Rotors – Nissan GT-R
The Girodisc A2-232 Rear Rotor Kit is a direct replacement for the OEM rear rotors on the Nissan GT-R. Designed to deliver race-proven performance with factory fitment, these lightweight two-piece rotors enhance cooling efficiency, reduce unsprung weight, and maintain perfect compatibility with stock calipers and ABS.
Lightweight Performance. Race-Ready Engineering.
Each Girodisc rotor combines a precision-machined 6061-T6 aluminum hat with a proprietary cast-iron ring, both sourced and built in the USA. The curved vane internal geometry acts as a centrifugal air pump, forcing cooling air through the disc to reduce temperatures and prevent fade under aggressive driving. The floating mount system allows the rotor ring to expand naturally under heat without warping or coning, maintaining consistent pedal feel and braking balance.
Features
• Direct replacement for OEM Nissan GT-R rear rotors• Two-piece floating design: cast-iron rotor ring + 6061-T6 aluminum hat• Curved-vane internal cooling for heat management• Floating mount system with cadmium-plated drive pins and class 12.9 hardware• Anti-noise spring washers eliminate rattle when cold• Reduces unsprung and rotational mass• Maintains factory ABS and brake bias• Reusable hats – replace rings when worn• Sold/priced per pair
Vehicle Fitment
• Nissan GT-R (All R35 models) – Rear• Direct OEM bolt-on replacement• Works with factory calipers and ABS
Girodisc A2-232 Rear Rotors – Nissan GT-R FAQs
Do these rotors fit the stock calipers? Yes. The A2-232 rotors bolt directly to OEM calipers and retain factory brake balance and ABS performance.
What’s the benefit of a floating two-piece design? The floating mount allows for thermal expansion and self-centering, improving braking consistency and minimizing stress that leads to rotor cracking or distortion.
Are replacement rings available? Yes. Girodisc offers replacement rings that allow you to reuse the aluminum hats and hardware for cost-effective long-term maintenance.
Do these rotors make noise? No. Anti-noise spring washers eliminate rattle when cold while preserving the benefits of a true floating design under heat.
Are these rotors lighter than OEM? Yes. The aluminum hat significantly reduces unsprung and rotational mass, improving acceleration, handling, and ride quality.
Are they sold individually or as a set? The Girodisc A2-232 rotors are sold as a pair for the rear axle.
Upgrade your Nissan GT-R with the Girodisc A2-232 2-Piece Rear Brake Rotors—built for drivers who demand precision, performance, and reliability on both street and track.
GiroDisc Racing Brakes & Technologies
A2-184 Girodisc Corvette C6 ZR1 Rear Iron Rotor Conversion
$1,450.00
Girodisc Corvette C6 ZR1 Rear Iron Rotor
Replace your factory carbon-ceramic rotors with Girodisc’s high-performance iron rotor conversion for the Corvette C6 ZR1. This bolt-on system provides exceptional braking consistency, reduced operating costs, and race-proven heat management—all while maintaining full compatibility with factory calipers and ABS systems.
Direct OEM Replacement for Carbon-Ceramic Rotors
The Girodisc system is a true plug-and-play upgrade for the C6 ZR1, offering the same dimensions as the OEM carbon-ceramic rotors without requiring any modifications. The two-piece floating design features a CNC-machined 6061-T6 aluminum hat and a proprietary high-carbon cast iron rotor ring. This setup allows the rotor to expand under heat, maintaining consistent contact with brake pads and preventing warping or fade during extreme conditions.
Features
• Direct replacement for OEM carbon-ceramic rear rotors• Precision-machined 6061-T6 billet aluminum hats• Proprietary high-carbon cast iron rings cast and machined in the USA• Floating mount system with 12 cadmium-plated alloy steel drive pins• Anti-noise spring washers prevent rattling while maintaining float• Curved vane design acts as a centrifugal pump for superior cooling• Fully rebuildable—replace only the rotor rings when worn• Sold/priced in pairs
Vehicle Fitment
Chevrolet Corvette C6 ZR1 (2009–2013)Compatible with OEM carbon-ceramic brake systems and factory calipers.
Girodisc A2-184 Rear Rotor FAQs:
Do these Girodisc rotors replace the factory carbon-ceramic setup? Yes, this iron rotor conversion is engineered as a direct replacement for the OEM carbon-ceramic rotors on the C6 ZR1.
Are the rotors lighter than the carbon-ceramic ones? No. While slightly heavier, Girodisc rotors provide improved heat capacity, better pedal feel, and lower long-term maintenance costs.
Can these rotors handle track use? Absolutely. When combined with quality performance pads and high-temperature brake fluid, Girodisc rotors offer outstanding durability and fade resistance under extreme track conditions.
Are they compatible with OEM calipers and sensors? Yes. These rotors fit perfectly with the factory ZR1 calipers and retain all OEM brake system functions.
Experience consistent, confidence-inspiring braking on your C6 ZR1 with Girodisc’s rear iron rotor conversion—a proven upgrade for performance enthusiasts and track drivers alike.
GiroDisc Racing Brakes & Technologies
A1-216 Girodisc 2pc Front Brake Rotors for Audi RS4, RS5 (B9)
$1,450.00
Audi B9 RS4 / RS5 Front Rotors
Unleash the full braking potential of your Audi RS4 or RS5 with Girodisc’s lightweight 2-piece floating front rotors. These are a true bolt-on replacement for the factory discs—no modifications required. By upgrading to Girodisc, you maintain your OEM brake balance and ABS functionality while gaining improved cooling, reduced fade, and a noticeably sharper pedal feel.
Engineered for Precision and Performance
Each Girodisc rotor is designed and manufactured in the USA from premium materials. The hat is CNC-machined from 6061-T6 aircraft-grade aluminum for strength and reduced weight. The iron rotor rings are cast from Girodisc’s proprietary high-carbon alloy, developed to withstand extreme temperatures and ensure consistent performance under repeated hard stops. The internal curved vane design acts as a centrifugal air pump, pulling cooling air through the disc to keep brake temperatures under control during spirited or track driving.
Girodisc A1-216 Vehicle Fitment
Audi RS4 (B9, 2018+)
Audi RS5 (B9, Coupe & Sportback, 2018+)
Features
Direct OEM Fit: Bolts directly to factory calipers and hubs with no adapters or modifications needed.
Lightweight Two-Piece Design: Reduces rotational and unsprung mass for faster suspension response and improved cornering.
Curved Vane Cooling: Directional vanes actively pump air through the disc to improve cooling efficiency and prevent fade.
Floating Mount System: Twelve high-strength steel drive pins with anti-noise spring washers allow thermal expansion without rattle or vibration.
Serviceable Construction: The aluminum hats are reusable—only replace the cast-iron rings when worn.
Made in the USA: Fully machined and assembled domestically with tight quality control.
FAQs –Girodisc A1-216 Audi B9 RS4 / RS5 Front Rotors
Are these rotors compatible with OEM calipers? Yes, they fit the factory RS-series Brembo calipers directly—no adjustments required.
Will these improve braking feel? Absolutely. You’ll notice a more consistent, responsive pedal with improved modulation under high heat.
Are Girodisc rotors quieter than stock? Yes—the floating hardware includes anti-noise spring washers that eliminate the rattling common to other two-piece designs.
Can these rotors handle track use? Definitely. They’re designed for sustained high temperatures, making them ideal for both spirited road use and heavy circuit work.
Give your Audi RS4 or RS5 the braking confidence it deserves with Girodisc’s precision-built floating front rotors. Engineered to deliver unmatched cooling, control, and reliability—whether you’re charging mountain roads or braking deep into a corner at the track.
GiroDisc Racing Brakes & Technologies
A1-220 Girodisc 2pc Front Brake Rotors for BMW F8X M2/M3/M4 w/CCB (Gold Calipers)
$1,450.00
BMW F8X M2 / M3 / M4 400mm Front Rotors
Upgrade your BMW’s stopping power with Girodisc 400mm 2-piece floating front rotors for the F8X M2, M3, and M4. Designed as a direct bolt-on replacement for factory discs, these rotors require no modifications and work flawlessly with OEM calipers. Lighter, stronger, and more thermally efficient than stock, they transform your braking consistency and control on both street and track.
Precision Performance Meets German Engineering
Each Girodisc rotor is crafted in the USA from motorsport-grade materials to meet the demands of high-performance BMWs. The hat is CNC-machined from 6061-T6 aluminum to reduce weight and unsprung mass, while the cast-iron rotor rings are made from Girodisc’s proprietary high-carbon alloy. Internal curved vanes act as centrifugal pumps, pulling air through the rotor to keep braking temperatures stable during spirited driving and heavy track sessions.
Vehicle Fitment
BMW M2 (F87, Competition & CS)
BMW M3 (F80)
BMW M4 (F82, F83, including Competition & GTS)
Features
Direct OEM Fit: Installs with factory calipers and hardware — no adapters needed.
400mm Two-Piece Floating Design: Reduces rotational and unsprung weight for quicker response and improved handling.
Curved Vane Internal Cooling: Acts as a centrifugal pump, forcing cool air through the disc for optimal heat management.
Floating Mount System: Twelve high-strength steel drive pins and anti-noise spring washers allow precise thermal expansion with silent operation.
Replaceable Iron Rings: The aluminum hat is reusable — simply swap in new rings when needed.
Made in the USA: Designed, cast, and machined domestically under tight performance tolerances.
FAQs – BMW F8X M2 / M3 / M4 400mm Front Rotors
Do these rotors fit stock BMW calipers? Yes, they’re a direct replacement designed for OEM calipers and hardware.
Will I notice a difference in pedal feel? Absolutely — reduced weight and improved ventilation give a firmer, more consistent pedal under repeated stops.
Are these rotors track-capable? Yes. Girodisc rotors are engineered for track use yet remain quiet and reliable for everyday driving.
Do they come as a set? Yes, all Girodisc rotors are sold and priced per pair.
Take your F8X BMW’s braking to the next level with Girodisc’s lightweight 400mm floating rotors. Engineered for high-speed stability and race-ready heat control, they deliver unmatched stopping confidence wherever you drive.
GiroDisc Racing Brakes & Technologies
A2-172 Girodisc Chevrolet Camaro Z/28 (5th Gen) Rear Iron Rotor Conversion
$1,450.00
Girodisc Chevrolet Camaro Z/28 (5th Gen) Rear Iron Rotor Conversion
Upgrade your 5th-Gen Camaro Z/28 with Girodisc’s rear iron rotor conversion, engineered as a direct replacement for the OEM carbon-ceramic rotors. This high-performance setup delivers superior heat control, lower replacement costs, and the same confident braking feel that made the Z/28 a track legend.
Direct Carbon-Ceramic Replacement, Built to Perform
The Girodisc system is a true bolt-on solution—no modifications or adapters needed. Each rotor features a CNC-machined 6061-T6 aluminum hat mated to Girodisc’s proprietary cast-iron friction rings, both made in the USA. The floating two-piece design manages heat expansion under hard braking, maintaining perfect pad contact and preventing warping. Curved internal vanes act like centrifugal pumps to pull cooling air through the discs, keeping temperatures in check lap after lap.
Features
• Direct replacement for OEM carbon-ceramic rear rotors• Billet 6061-T6 aluminum hats with hard-anodized finish• Proprietary cast-iron rings poured and machined in the USA• Floating mount system with cadmium-plated steel drive pins• Anti-noise spring washers eliminate rattle while allowing float• Curved vane design improves airflow and cooling• Fully rebuildable—replace only the rotor rings when worn• Sold/priced per pair
Vehicle Fitment
Chevrolet Camaro Z/28 (2014–2015, 5th Generation)Fits OEM carbon-ceramic brake systems with factory Brembo calipers.
Girodisc A2-172 Rear Rotor FAQs:
Why switch from carbon-ceramic to iron rotors? Iron rotors offer greater heat capacity, improved modulation, and dramatically reduced replacement cost—ideal for track-day or endurance use where carbon ceramics can degrade quickly.
Are these a direct fit for the Z/28’s carbon-ceramic setup? Yes. They bolt directly to the factory hubs and work with the original Brembo calipers and parking-brake system.
Do these affect ABS or stability control? No. Girodisc rotors maintain factory geometry and tone-ring compatibility, so all electronic systems function normally.
What difference will I feel when driving? Expect smoother pedal feedback, improved heat management under repeated hard braking, and more consistent stopping power throughout a session.
Upgrade your Camaro Z/28 with Girodisc’s rear iron rotor conversion and experience the durability, balance, and braking precision trusted by serious track drivers everywhere.
GiroDisc Racing Brakes & Technologies
A1-172 Girodisc 2pc Front Brake Rotors for Chevy Camaro Z/28 (Gen 5)
$1,450.00
Chevrolet Camaro Z/28 (5th Gen) Front Iron Rotor Conversion
The Girodisc Front Iron Rotor Conversion for the fifth-generation Chevrolet Camaro Z/28 provides a lightweight, high-performance alternative to the factory carbon-ceramic rotors. Designed as a direct replacement for the OE discs, this system bolts on with no permanent modifications required. For optimal performance and reasonable rotor weight, it requires brake pads with a swept area (annulus) of 66mm or less, using the FMSI #1405 pad shape.
Performance and Design
By switching from carbon-ceramic to iron rotors, drivers benefit from improved heat management, reduced replacement costs, and consistent braking performance under repeated heavy use. The Girodisc design maintains factory brake bias and ABS functionality while significantly improving serviceability.
Features
- Direct replacement for the OEM front carbon-ceramic rotors.
- Requires the FMSI #1405 pad shape (available in multiple compounds).
- Two-piece floating rotor assembly combines a proprietary cast iron friction ring with a precision-machined 6061-T6 aluminum hat.
- Curved internal vanes act as a centrifugal pump to maximize cooling airflow through the rotor.
- Floating mount system with 12 high-strength alloy steel drive pins allows axial and radial float to accommodate heat expansion and reduce stress.
- Anti-noise spring washers eliminate the rattle typically associated with floating rotors during street use.
- Cadmium-plated hardware ensures long-term corrosion resistance and durability.
- Lightweight two-piece design lowers rotational and unsprung mass, improving acceleration, steering response, and suspension control.
Specifications
Rotor Type: Two-piece floatingMaterial: Proprietary cast iron with 6061-T6 aluminum hatPad Requirement: FMSI #1405 (66mm swept area or less)Mount Hardware: 12 high-strength alloy steel drive pins, class 12.9 cap screwsOrigin: Designed, cast, and machined in the USAFitment: Chevrolet Camaro Z/28 (5th Gen)
FAQs: Chevrolet Camaro Z/28 (5th Gen) Front Iron Rotor Conversion
Why do I need to use a different pad shape? The Girodisc rotors are optimized for a 66mm pad annulus to maintain ideal weight and thermal characteristics. The required pad shape is FMSI #1405.
Can I reuse my OEM pads? No. The OEM pads are too large for the reduced swept area and may cause overheating or excessive wear.
Will this affect my ABS or brake balance? No. The system retains the factory brake bias and integrates seamlessly with the stock calipers and ABS tuning.
Are these rotors noisy? The use of spring washers in the floating mount design minimizes rattle and vibration while still allowing full float under thermal load.
What happens when the rotors wear out? The aluminum hats are reusable; you only need to replace the cast iron friction rings and reassemble with new hardware.
Ordering Information
Sold and priced per pair. Includes left and right front Girodisc rotors for the Chevrolet Camaro Z/28 (5th Gen). Requires FMSI #1405 brake pads for installation.
GiroDisc Racing Brakes & Technologies
A1-145 Girodisc Corvette C6 ZR1 / C7 (Z07 CCM) Front Iron Rotor Conversion
$1,450.00
Corvette C6 ZR1, C7 (Z07 CCM) Front Iron Rotor Conversion
The Girodisc Front Iron Rotor Conversion provides a direct, lightweight, and track-ready replacement for the OEM carbon ceramic rotors found on the Corvette C6 ZR1 and C7 Z06/Z07 with the carbon brake package. Designed to bolt directly to the car with no modifications, these rotors maintain OEM brake bias, ABS calibration, and pedal feel while offering greater durability and cost-effective serviceability.
To optimize performance and keep overall weight in check, this system requires brake pads with a swept area (annulus) of 66mm or less. Girodisc recommends the FMSI 1405 pad shape, which is widely used across performance applications and available in multiple compounds to suit your driving needs. These rotors deliver consistent, fade-free braking performance under the most demanding conditions, from street use to full race duty.
Precision-Engineered Performance
Vehicle Fitment
Chevrolet Corvette C6 ZR1
Chevrolet Corvette C7 Z06 / Z07 Package (CCM Brakes)
Features
Direct CCM-to-iron conversion: Replaces OEM carbon ceramic rotors with precision-engineered iron rotors that bolt directly to the factory calipers.
Lightweight design: Maintains low rotational mass while improving heat dissipation and long-term durability.
Curved vane cooling: Directional vanes act as centrifugal pumps to channel air through the rotors, reducing fade during sustained hard braking.
Floating mount system: Twelve cadmium-plated drive pins and spring washers allow for thermal expansion while eliminating unwanted noise or vibration.
Serviceable construction: Replaceable iron rings and reusable aluminum hats for long-term value and lower running costs.
U.S.-made quality: Machined from domestic 6061-T6 aluminum and proprietary cast iron entirely in-house at Girodisc’s Washington facility.
Girodisc A1-145 FAQs
Do these replace OEM carbon ceramic rotors? Yes. They are designed as a direct bolt-on conversion for ZR1 and Z07 CCM systems.
What brake pads should I use? Use a pad with a 66mm annulus or less—FMSI 1405 shape is recommended and available in multiple compounds.
Will my brake bias or ABS be affected? No. Girodisc ensures full compatibility with OEM brake balance and electronic control systems.
Are they quieter than CCM brakes? Yes, the anti-noise washers eliminate rattle while retaining full floating function.
How are they sold? Rotors are sold and priced per pair.
Upgrade your C6 or C7 Corvette with Girodisc’s precision-engineered iron rotor conversion for cooler, quieter, and more consistent braking—built for endurance and performance, mile after mile.
GiroDisc Racing Brakes & Technologies
A2-145 Girodisc Corvette C7 (Z07 CCM) Rear Iron Rotor Conversion
$1,450.00
Girodisc Corvette C7 (Z07 CCM) Rear Iron Rotor Conversion
For Corvette owners running the Z07 carbon-ceramic package, Girodisc’s rear iron rotor conversion delivers a cost-effective and performance-proven upgrade. Designed to replace the factory CCM discs directly, this setup improves heat management and serviceability while retaining full compatibility with OEM calipers and the integrated parking brake.
Vehicle Fitment
Chevrolet Corvette C7 Z06 (Z07 Performance Package, 2015–2019)Chevrolet Corvette C7 Grand Sport (Z07 Performance Package, 2017–2019)Compatible with OEM Brembo carbon-ceramic calipers and factory parking brake system.
Engineered for Precision and Durability
The Girodisc system bolts directly to the factory hubs with no modifications required. Each rotor features a CNC-machined 6061-T6 aluminum hat paired with Girodisc’s proprietary high-carbon cast-iron friction ring. The floating two-piece design allows for controlled thermal expansion, maintaining consistent pad contact and pedal feel even during extended track use. Internal curved vanes draw cooling air through the disc, preventing fade and ensuring stable temperatures under repeated hard braking.
Features
• Direct replacement for OEM CCM rear rotors—no adapters required• 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 drive pins• Anti-noise spring washers prevent rattle while maintaining float• Curved vane internal design for superior airflow and cooling• Fully rebuildable—replace only the rotor rings when worn• Sold/priced per pair
Girodisc A2-145 Rear Rotor FAQs:
Why convert from carbon-ceramic to iron rotors? Iron rotors provide more consistent pedal feel, superior heat tolerance, and drastically lower maintenance costs—ideal for track use or frequent spirited driving.
Do these work with the stock Brembo calipers and parking brake? Yes. The Girodisc rotors are designed for a perfect OEM fit, retaining all factory brake functions and hardware.
Will switching to iron rotors affect braking balance? No. The Girodisc system preserves factory rotor dimensions and maintains the original brake bias and ABS calibration.
Are these suitable for heavy track use? Absolutely. The floating two-piece design and improved heat capacity make them ideal for endurance track sessions and repeated high-load braking.
Give your C7 Z07-equipped Corvette reliable, track-ready stopping power with Girodisc’s rear iron rotor conversion—precision-machined for performance, consistency, and long-term durability.
GiroDisc Racing Brakes & Technologies
A1-100 Girodisc Audi B7 RS4 380mm Front Rotors, incl. caliper spacers
$1,450.00
Audi B7 RS4 380mm Front Rotors
Girodisc 380mm front rotors give the Audi B7 RS4 a substantial braking upgrade without requiring a big brake kit. These 2-piece floating rotors are a direct replacement for the factory discs and include caliper spacers for perfect fitment. With a larger diameter than OEM (380mm vs. 365mm), they deliver greater braking torque, improved heat capacity, and a lighter overall feel at the pedal—ideal for both aggressive street driving and full track use.
Each rotor combines a 6061-T6 aluminum hat with Girodisc’s proprietary high-carbon cast-iron rotor rings, all machined in-house in the USA. The internal curved vane design functions like a centrifugal air pump, drawing cooling air through the rotor to stabilize temperatures under repeated hard stops. The result: better braking control, reduced fade, and longer pad life.
Big Stopping Power, No Big Brake Kit Required
Vehicle Fitment
Audi B7 RS4 (2006–2008)
Girodisc A1-100 Features
Direct bolt-on upgrade: Includes caliper spacers for easy installation—no additional modifications needed.
380mm rotor diameter: Increases brake torque and thermal capacity over stock 365mm discs.
Lightweight 2-piece construction: Reduces unsprung and rotational mass for sharper handling response.
Curved vane cooling system: Actively circulates air through the rotors to minimize fade during repeated stops.
Floating hardware design: Allows thermal expansion without distortion for consistent pad contact.
Made in the USA: Machined and assembled entirely in-house by Girodisc.
Girodisc A1-100 FAQs
Do these rotors fit directly to the factory RS4 calipers? Yes. They include caliper spacers and hardware to bolt up perfectly to OEM calipers.
Are these rotors lighter than OEM? Yes. At approximately 22.6 lbs per rotor vs. 25.5 lbs stock, they reduce unsprung mass and rotational inertia.
Do they improve braking performance? Absolutely. The increased size and advanced vane design provide stronger, more consistent braking under heat.
Do I need any special modifications? No. Installation is straightforward—just use the included caliper spacers.
How are they sold? Sold and priced per pair.
Give your Audi RS4 sharper, cooler, and more confident stopping power with Girodisc 380mm front rotors—engineered for precision and performance without compromise.
GiroDisc Racing Brakes & Technologies
A1-034 Girodisc Audi, Lamborghini 380mm Front Rotors, incl. spacers & bolts
$1,450.00
Audi, Lamborghini 380mm Front Rotors, incl. spacers & bolts
Step up your braking performance with Girodisc two-piece floating front rotors for Audi and Lamborghini models equipped with 365mm factory rotors. This 380mm upgrade increases braking force and cooling capacity while maintaining factory ABS and bias. The included caliper spacers and hardware make installation straightforward, transforming your car’s stopping power without the need for a full big brake kit.
Precision Engineering for Exotic Performance
Each Girodisc rotor is manufactured in the USA from proprietary high-carbon cast iron, mated to a 6061-T6 aluminum hat for exceptional strength and reduced weight. The curved vane internal design acts like a centrifugal pump, pulling air through the rotor to dissipate heat under high-stress driving. The fully floating design prevents warping and ensures consistent, quiet operation through anti-noise spring washers that allow the rotor to expand naturally under heat.
Vehicle Fitment
• Audi R8 (Gen 1, 2007–2015)• Audi RS5 (B8, 2013–2015)• Lamborghini Gallardo (All models with 365mm front rotors)
Features
• Direct-fit upgrade with included caliper spacers and bolts• Larger 380mm diameter for increased braking torque and cooling• Lightweight two-piece floating rotor design• U.S.-sourced 6061-T6 aluminum hats• Proprietary cast iron rotor rings with curved internal vanes• Floating drive pin system with anti-noise spring washers• Improved heat management and fade resistance• Sold/priced per pair
Audi & Lamborghini Front Rotor FAQs:
Do these rotors require modification? No, they are a direct-fit upgrade with the included spacers and hardware.
Will they fit factory calipers? Yes, these rotors work with OEM calipers using the supplied caliper spacers.
What are the benefits of the larger 380mm size? The increased diameter provides greater braking leverage, reduced fade, and better heat dissipation during repeated stops.
Can I replace just the rings later? Yes, Girodisc offers replacement rings to reuse your existing aluminum hats, saving cost over time.
Upgrade your Audi or Lamborghini with Girodisc’s high-performance 380mm front rotors—precision-built to deliver the braking power and control your supercar deserves.
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
A2-056 Girodisc Mercedes E63, CLS63, C63 Black Series Rear Rotors
$1,450.00
Girodisc Mercedes E63, CLS63, C63 Black Series Rear Rotors
Give your AMG the braking performance it deserves with Girodisc lightweight two-piece rear rotors. Engineered as a precise OEM replacement, these rotors reduce unsprung weight, enhance pedal feel, and maintain flawless factory balance—all while offering superior thermal control for both road and track driving.
Vehicle Fitment
Mercedes-Benz E63 AMG (W211, W212)Mercedes-Benz CLS63 AMG (W219, W218)Mercedes-Benz C63 AMG Black Series (C204)Direct OEM replacement compatible with factory calipers and hardware.
Race-Bred Engineering for Street and Track
The Girodisc system bolts directly to your vehicle with no modifications required. Each rotor combines a CNC-machined 6061-T6 aluminum hat with Girodisc’s proprietary cast-iron friction ring, both designed and produced in the USA. The two-piece floating assembly allows for controlled expansion under heat, maintaining consistent pad contact and eliminating distortion. Internal curved vanes act as centrifugal pumps, channeling air through the rotor to prevent heat soak during heavy braking.
Features
• Direct OEM replacement—no modification required• 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 and ensure proper float• Curved vane internal design maximizes airflow for better cooling• 14.4 lbs vs. 22.5 lbs OEM—saves over 8 lbs per corner• Retains factory ABS function and brake bias• Fully rebuildable—replace only the friction rings when needed• Sold/priced per pair
Girodisc A2-056 Rear Rotor FAQs:
Are these rotors a direct fit for AMG models? Yes. Girodisc designed these rotors to bolt directly onto E63, CLS63, and C63 Black Series models without any modification or additional hardware.
What kind of performance gains can I expect? You’ll notice reduced fade, quicker braking response, and sharper pedal feel thanks to lower weight and better cooling efficiency.
Do they work with OEM brake pads? Absolutely. They’re fully compatible with factory pads and calipers, or you can upgrade to performance pads for track use.
Are they rebuildable? Yes. When the friction rings wear out, you can replace just those components, keeping your aluminum hats and saving long-term costs.
Experience confident, consistent braking on every drive with Girodisc rear rotors—precision-built for AMG performance without compromise.
AiM Sportline
AiM Sports MXm Compact Dash Logger
$1,449.00
AiM Sports MXm Compact Dash Logger
The MXm from AiM is the compact dash logger with big features to put all the information you need right at your fingertips. It samples and shows key info like speed, lap times, RPM, gears, data from a nine-axis inertial platform, multiple math channels and much more. It is compact (5.4 x 3.5 x 1.3 in.), making it perfect for sports cars and bikes, and it's plug-and-play for ease-of-use. Complete but simple, MXm is the perfect device for both Pro and Amateur drivers.
WIDE RANGE OF DATA SOURCES
MXm samples data from your ECU, its internal GPS and inertial platform (accelerometer, gyro and magnetometer), four fully configurable analog inputs, three digital inputs (two speed + one coil RPM input), and predefined math channels. For the most demanding, the MXm can be connected to the Lambda controller and a SmartyCam HD to create a fully-integrated AiM information suite.
INTEGRATED SHIFT LIGHTS & ALARM
MXm features a five-LED shift light array. Choose from a host of advanced multicolored RGB shift light patterns that can be customized to your needs, and for each unique gear when required. MXm also features two fully configurable RGB alarm LEDs: you can choose the conditions that turn them on/off, their color, and select a solid alarm or flashing one (and the flash frequency.)
DUAL POWER OUTLETS
MXm features two power outputs that can supply up to 15A each. These outputs can turn on/off depending on the value of analog or digital inputs to the MXm. They can automatically actuate external systems, such as switching on/off additional lights, activating/de-activating cooling fans or circulation pumps, etc.
SHARP LCD
MXm features a high contrast LCD display with an outstanding black to white ratio. The wide 268 x 128-pixel graphical LCD offers great flexibility in information display and alerts. The screen can be backlighted in one of the seven available colors, and an ambient light sensor keeps the backlight at optimum brightness.
CUSTOMIZABLE LAYOUT
You can organize the huge quantity of data captured by MXm into your own custom pages, choosing from a wide range of page styles, data to be shown, their end of scale and unit of measure. At the end of each session, you can review an on-screen summary of your best laps, max/min RPM, speed and temperatures.
WIFI CONNECTIVITY
Makes it even more convenient to configure, calibrate, and download your data wirelessly, using a secure 802.11 connection. No need to move your PC close to the vehicle anymore, you can do it from your trailer up to 50 yards away.
SMARTYCAM COMPATIBILITY
SmartyCam on-board cameras, for professional recording of your races, with your real-time data overlayed on videos.
RACE STUDIO 3 DATA ANALYSIS
Race Studio 3 is the true engine of your MXm. With Race Studio 3, you can analyze all data recorded by MXm and downloaded to your PC. RS3 generates graphs, histograms, and tables to help you study your performance, providing an objective support to correct mistakes and improve your driving. You can even compare two laps watching the video recorded by SmartyCam HD cameras!
RS3 can create, modify, delete, import and export MXm configurations with all channels, ECU drivers, math channels, display pages, digital outputs, alarms, shift lights and expansions.
Forgeline Motorsports
Forgeline GA3R Wheel
$1,429.00
FORGELINE GA3R WHEEL
After over 20 years of involvement with teams in virtually every sports car racing series in the world, Forgeline knows what it takes to produce a lightweight racing wheel that can withstand the fierce conditions of the sport. This knowledge has been applied to their latest and greatest, the best three-piece wheel that they have ever made: the GA3R.Forgeline's signature I-Beamed Spoke technology reduces weight and adds strength and rigidity to the spokes of the wheel. The hidden titanium assembly hardware delivers a smooth, clean look, making wheel cleaning faster and easier. The design of the GA3R's center allows plenty of room for caliper clearance and extreme brake fitment. Forgeline employs a proprietary fast-drying, super-strength sealer that is highly resistant to leaks and allows for quick and easy repairs.The Forgeline GA3R is truly designed for racing. Each wheel is engineered with a 2100-lb. load rating to ensure strength and integrity when subjected to the massive forces encountered on the stickiest race tires. It is the only wheel actually warranted for use in racing applications!The GA3R is produced using Forgeline's traditional forging method, milled from a 6061-T6 aluminum billet with heat-treated rim shells. Like any Forgeline wheel, the GA3R is fully customizable in fitment and finish, including center lock applications. It is available in 17-, 18-, 19-, and 20-inch sizes in virtually any width and offset.
FEATURES:
Extremely Lightweight and Very Strong
Forged 6061-T6 Aluminum
Three-Piece Competition Wheel
Stepped-Lip Design
I-Beamed Spoke Technology
Hidden, Lightweight Titanium Fasteners
Generous Brake Clearance
Heat-Treated Rim Shells
2100-lb. Street-Tire Load Rating
Warranted for Racing
Unlimited Customizable Fitment and Finish Options
COBB Tuning Products, LLC
COBB Accessport V3 for Porsche 981 Cayman & Boxster (All)
$1,425.00
COBB Tuning Accessport V3 for Porsche 981
The COBB Accessport V3 is the most powerful and flexible ECU tuning upgrade available for the Porsche 981 Cayman and Boxster. Porsche’s factory ECU calibration is intentionally conservative, leaving unrealized horsepower and torque on the table. COBB’s OTS (off-the-shelf) maps unlock sharper throttle response, broader midrange torque, and more top-end power across the rev range.
As you continue to modify your 981, the Accessport grows with your build—supporting performance upgrades such as high-flow intakes, plenums, and larger throttle bodies. It truly is the last engine management device your 981 will ever need.
Setup takes about 20 minutes: download your preferred COBB maps, connect the Accessport to the OBD2 port, flash the ECU, and enjoy an immediate transformation. Your original factory map is automatically backed up, allowing you to return to stock whenever you choose.
Available OTS Maps:Stage 1 maps are designed for a stock engine configuration. Stage 2 maps support high-flow intake plenums and the 82mm throttle body—both of which produce a tuning upgrade you can feel from the driver’s seat.
The Accessport V3 features a large, full-color, high-resolution display; customizable multi-gauge layouts; numerous mounting options; and enough memory for up to 100 calibrations. This is your new Accessport—and the last tuning tool your Porsche will ever need.
Warning: Installing the Accessport over anything other than OEM or COBB software may result in ECU/TCU failure.
Supported Vehicles
981 Cayman
2014–2016 Porsche Cayman MT / PDK
2014–2016 Porsche Cayman S MT / PDK
2015–2016 Porsche Cayman GTS MT / PDK
2016 Porsche Cayman GT4 MT
2016 Porsche Cayman GT4 Clubsport PDK
981 Boxster
2013–2016 Porsche Boxster MT / PDK
2013–2016 Porsche Boxster S MT / PDK
2015–2016 Porsche Boxster GTS MT / PDK
2016 Porsche Boxster Spyder MT
Features
Large full-color high-resolution display
Customizable multi-gauge monitoring layout
In-vehicle mount with integrated on/off switch
User-customizable startup screen
Interchangeable faceplates
COBB Tuning Dyno Graphs
Key Benefits
Unlocks major horsepower and torque gains across the rev range
Improves throttle response and overall drivability
Supports OTS maps for common bolt-on performance upgrades
Monitors up to six engine parameters in real time
Customizable gauge layouts for street, track, or dyno use
Quick installation with easy map flashing and switching
Backs up factory tune and can revert to stock anytime
High-resolution display with interchangeable faceplates
Competition Motorsport | sales@competitionmotorsport.com | (844) 438-7244
COBB Tuning Products, LLC
COBB Accessport V3 for Porsche 991.1 Carrera (All Naturally Aspirated)
from $1,425.00
COBB Accessport V3 for Porsche 991.1 Carrera (Naturally Aspirated)
The COBB Accessport V3 is the most flexible and best-selling ECU upgrade for all naturally aspirated Porsche 991.1 Carrera models. Porsche’s factory mapping is intentionally conservative—COBB’s performance calibrations unlock sharper throttle response, improved midrange torque, and stronger power delivery across the entire rev range.
The Accessport also grows with your build. COBB’s off-the-shelf (OTS) maps are professionally designed to support the most common bolt-on upgrades, including the IPD Competition Plenum and 82mm throttle body. It’s truly the last engine management solution you’ll ever need.
Setup is simple: download your preferred maps from COBB, connect the Accessport to the OBD2 port, and flash your ECU in about 20 minutes. Your factory tune is safely backed up so you can revert to stock at any time.
Warning: Installing this Accessport over anything other than OEM or COBB software may result in ECU/TCU failure. Contact us at (844) 438-7244 with any questions.
Stage 1 Maps
Stage 1 calibrations are designed for stock engine configurations but also work exceptionally well with the IPD Competition Plenum and upgraded throttle body. Sharper response, better drivability, and improved performance you can feel on road or track.
The Accessport V3 features a large full-color display, customizable gauge layouts, multiple bezel options, and space for up to 100 calibrations. This is your new Accessport—and likely the last tuning device your Porsche will ever need.
Confirmed Applications
2012–2016 Porsche 911 (991) Carrera MT, PDK
2012–2016 Porsche 911 (991) Carrera S MT, PDK
2013–2016 Porsche 911 (991) Carrera 4 MT, PDK
2013–2016 Porsche 911 (991) Carrera 4S MT, PDK
2013–2016 Porsche 911 (991) Carrera S X51 MT, PDK
2015–2016 Porsche 911 (991) Carrera 4 GTS MT, PDK
2015–2016 Porsche 911 (991) Carrera GTS MT, PDK
Features
Large full-color high-resolution screen
Customizable multi-gauge display
In-vehicle mount with on/off switch
User-customizable startup screen
Interchangeable faceplates
COBB Accessport V3 Dyno Graphs
Key Benefits
Significant improvements in throttle response and midrange torque
Compatible with IPD Competition Plenum and 82mm throttle body
Stores up to 100 maps with fast, intuitive ECU flashing
Customizable live-data monitoring for track or street
Supports NA performance builds with OTS tuning options
Backs up your stock ECU file for quick restoration
Large full-color screen for easy data viewing
Perfect upgrade for daily, spirited, and track driving
Competition Motorsport | sales@competitionmotorsport.com | (844) 438-7244
