GiroDisc Racing Brakes & Technologies
A2-232 Girodisc 2-Piece Rear Brake Rotors – Nissan GT-R
$2,031.00
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
A2-238 Girodisc 380mm 2pc Rear Brake Rotors
$2,451.00
Girodisc Rear Brake Rotors – Porsche 991 GT3 Cup Car
The Girodisc A2-238 Rear Rotor Set (380x30mm) is a direct replacement for the OE cup car discs used on the Porsche 991 GT3 Cup. Engineered for performance and reliability under extreme track conditions, these rotors bolt directly to your car and work seamlessly with the original calipers and ABS system—no modifications required.
Race-Proven Two-Piece Design
Each Girodisc rotor is designed and manufactured in the USA with precision components to ensure durability and superior thermal management. The central hat section is CNC-machined from U.S.-sourced 6061-T6 aircraft-grade aluminum, while the outer ring is made from Girodisc’s proprietary cast iron alloy, poured and machined entirely in-house. The curved vane design actively pumps cooling air through the disc, reducing temperatures during intense braking to prevent fade and warping.
A2-238 Girodisc 380mm 2pc Rear Brake Rotor Features
• Direct replacement for OEM Porsche 991 GT3 Cup rear discs (380x30mm)• Two-piece floating rotor design for optimal heat management• 6061-T6 aluminum hats machined from U.S.-sourced billet• Proprietary cast iron rotor rings with curved vane cooling geometry• 12 high-strength alloy steel drive pins with cadmium plating• Anti-noise spring washers eliminate rattle while maintaining full float• Class 12.9 hardware and hardened washers for secure mounting• Significantly reduces unsprung and rotational mass• Reusable hats—replace only rings when worn• Sold/priced per pair• Optional center-lock drive pin kit available
A2-238 Girodisc 380mm 2pc Rear Brake Rotor Vehicle Fitment
• Porsche 991 GT3 Cup (All model years) – Rear• Fits OEM calipers and ABS• Center-lock wheel option available upon request
A2-238 Girodisc 380mm 2pc Rear Brake Rotor FAQs
Do these rotors fit directly without modifications? Yes. The Girodisc A2-238 system is a direct bolt-on replacement for OEM rear discs on the 991 GT3 Cup.
What is the advantage of a two-piece floating rotor? The floating design allows the iron rotor ring to expand under heat without stressing the aluminum hat, improving performance, reducing weight, and preventing cracking or distortion.
Can I reuse the aluminum hats? Yes. Once the cast iron rings wear out, you can replace just the rings and retain the existing hats and hardware.
Do these rotors make noise? No. The use of anti-noise spring washers ensures quiet operation even when cold, while maintaining true floating capability under heat.
Are these rotors sold individually? No. The Girodisc A2-238 rotors are sold as a pair for the rear axle.
Is a center-lock version available? Yes. Girodisc offers a specific drive pin option for vehicles equipped with OEM center-lock hubs—select this option when ordering.
Enhance your Porsche 991 GT3 Cup’s braking performance with the Girodisc A2-238 2-Piece Rear Brake Rotors (380x30mm)—precision-engineered, race-proven, and built to handle the most demanding conditions on track.
GiroDisc Racing Brakes & Technologies
A2-239 Girodisc 2pc Rear Brake Rotors (ZL1 Gen 5)
$1,541.00
Competition Motorsport is an authorized dealer for Girodisc products. As one of the largest stocking dealers in the country, we ship most Girodisc products the same or next business day to ensure we meet your delivery deadline.
Fits Chevrolet Camaro ZL1 Gen 5
The Girodisc system is a direct replacement for the OE disc, they will bolt directly to the car and work with OE calipers perfectly. By upgrading your brakes with lightweight high performance replacements as opposed to a big brake kit, your factory bias is maintained as well as your ABS efficiency.
The central hat section of the Girodisc rotor is made from strictly USA-sourced 6061-T6 aircraft specification aluminum. The disc is made from Girodisc's own proprietary cast iron, poured in the USA and machined from start to finish in house at Girodisc. The rotor utilizes a curved-vane design, developed in racing to act as a centrifugal pump forcing cool air through the disc.
The disc and hat have a floating mount system, which utilizes 12 high-strength alloy steel drive pins, manufactured in the US by Girodisc and cadmium plated for long-lasting corrosion resistance. These pins take the loads from braking while maintaining the axial and radial float between the hat and disc. They are secured by class 12.9 cap screws and hardened washers.
In order to keep the rotors from making noise when cold, the pins are mounted with anti-noise springs on the disc side, allowing the iron disc to expand as it heats up while eliminating the rattle and noise commonly associated with floating rotors. This float also allows the rotor to self center between the brake pads.
Once the Girodisc system is in place, you simply replace the cast iron discs when needed. This reduces cost over time by allowing you to re-use the aluminum central hats.
Sold/priced per pair
GiroDisc Racing Brakes & Technologies
A2-240 Girodisc Rear Iron Rotor Conversion – Mercedes E63 / CLS63 / SLS
$2,031.00
Girodisc Rear Iron Rotor Conversion – Mercedes E63 / CLS63 / SLS
The Girodisc A2-240 Rear Iron Rotor Conversion Kit converts your factory steel rear rotors to a high-performance two-piece floating iron rotor system for Mercedes E63, CLS63, and SLS models. It allows you to upgrade your brake system without replacing OEM hub components—delivering improved thermal management, reduced weight, and far better consistency under track or aggressive use.
Upgrade from Steel to Performance Iron
Mercedes E63, CLS63, and SLS vehicles often come with large, heavy steel rear rotors. The Girodisc A2-240 conversion lets you retain the stock hub assembly but convert to lightweight, high-quality cast-iron friction rings mounted on a 6061-T6 aluminum hat. This floating rotor system improves cooling, allows thermal expansion, and reduces unsprung and rotational mass while maintaining OEM caliper compatibility.
Features
• Conversion kit for Mercedes E63, CLS63, and SLS rear rotors• Converts factory rotor hubs to floating two-piece design• Machined 6061-T6 aluminum hat compatible with OEM hub• Proprietary cast-iron friction rings poured and machined in-house• Floating mount system with alloy steel drive pins and anti-noise spring washers• Cadmium-plated hardware and class 12.9 fasteners included• Reduces weight, improves cooling, and enhances brake response• Rings are replaceable—reuse hats and hardware in future• Sold as a complete kit
Vehicle Fitment
• Mercedes C-class E63 AMG – Rear• Mercedes CLS63 AMG – Rear• Mercedes SLS AMG – Rear• Designed to mate with existing hubs and calipers without modification
Girodisc A2-240 Rear Iron Rotor Conversion FAQs
Will I need new hubs or calipers? No. The A2-240 kit is designed to adapt to OEM hubs and calipers for a seamless conversion.
What advantages does the floating two-piece design offer over stock steel rotors? The floating design allows thermal growth, improves cooling under load, and reduces unsprung and rotational mass, all contributing to better pedal feel and reduced fade.
Are the ring components replaceable? Yes. When the iron rings wear out, you can replace them while reusing the aluminum hats and hardware to lower long-term costs.
Is this kit sold per axle? Yes. The A2-240 conversion comes as a complete rear rotor kit for both sides of the axle.
Will this affect my ABS or brake balance? No. This is a conversion that maintains the original geometry and balance while providing enhanced performance characteristics.
Convert your Mercedes E63, CLS63, or SLS rear braking setup to next-level performance with the Girodisc A2-240 Rear Iron Rotor Conversion. Enjoy reduced weight, improved thermal control, and enhanced braking confidence under load.
GiroDisc Racing Brakes & Technologies
A2-242 Girodisc 2-Piece Rear Brake Rotors – Corvette C8 Z51
$1,541.00
Girodisc Rear Brake Rotors – Corvette C8
The Girodisc A2-242 Rear Rotor Kit is a direct replacement upgrade for the factory C8 Z51 rear brake discs. Designed to bolt directly to the car without modification, these lightweight high-performance rotors deliver better heat management, improved braking consistency, and reduced unsprung weight—all while maintaining the factory brake bias and ABS performance.
Precision-Built Performance for the C8 Z51
The Girodisc A2-242 system replaces the OEM one-piece rotor with a two-piece floating design that improves cooling and reduces rotational mass. The central hat section is CNC-machined from U.S.-sourced 6061-T6 aircraft-grade aluminum, while the rotor rings are cast from Girodisc’s proprietary high-carbon iron alloy. The curved vane internal geometry acts as a centrifugal air pump to cool the discs during aggressive track driving, preventing fade and extending pad life.
Features
• Direct bolt-on replacement for Corvette C8 Z51 rear rotors• Two-piece floating rotor design for improved cooling and serviceability• Proprietary cast-iron rings poured and machined in the USA• Lightweight 6061-T6 aluminum hat reduces unsprung weight• Curved vane internal design for efficient heat dissipation• 10 high-strength alloy steel drive pins with anti-noise spring washers• Cadmium-plated hardware and class 12.9 cap screws• Reusable aluminum hats—only replace rings when worn• Sold/priced per pair
Vehicle Fitment
• Chevrolet Corvette C8 Z51 (All Years) – Rear• Compatible with factory calipers and ABS• Maintains OEM brake balance and fitment
Girodisc A2-242 Rear Rotors – Corvette C8 Z51 FAQs
Do these rotors fit the stock calipers? Yes. The Girodisc A2-242 rotors bolt directly to the OEM calipers with no modifications required.
What are the benefits of a two-piece floating rotor design? The floating mount allows the rotor to expand freely with heat, improving pedal feel, reducing cracking, and extending component life.
Will these rotors affect my ABS or brake bias? No. They’re engineered to maintain the factory bias and ABS tuning while improving overall performance.
Are replacement rings available? Yes. Girodisc offers replacement iron rings so you can reuse your aluminum hats and hardware, lowering long-term maintenance costs.
Do these rotors make noise? The floating hardware uses anti-noise spring washers to eliminate rattling when cold while maintaining full float under heat.
Are these sold individually? No. The Girodisc A2-242 rotors are sold as a matched pair for the rear axle.
Upgrade your Corvette C8 Z51 with the Girodisc A2-242 2-Piece Rear Brake Rotors—precision-engineered for superior cooling, weight reduction, and unmatched stopping performance lap after lap.
GiroDisc Racing Brakes & Technologies
A2-248 Girodisc Rear Rotors for Mercedes E63 / GT53
$2,031.00
Girodisc Rear Rotors – Mercedes E63 / GT53
The Girodisc A2-248 rear rotor set offers a direct-fit upgrade for the Mercedes E63 and GT53 platforms. Combining track-grade engineering with bolt-on simplicity, these two-piece rotors deliver better heat management, consistent brake feel, and reduced rotational weight—while retaining compatibility with OEM calipers and ABS systems.
Purpose-Built for Street and Track Use
Each rotor uses a curved-vane internal geometry to actively draw cooling air through the disc, preventing hotspots under hard braking. The hub is machined from 6061-T6 aluminum while the friction ring is cast from Girodisc’s proprietary iron alloy—machined in-house from start to finish. A floating mount system with drive pins and anti-noise washers allows expansion and self-centering, enhancing consistency and longevity.
Features
• Designed for Mercedes E63 / GT53 rear axle fitment• Two-piece rotor design: lightweight aluminum hub + machined cast-iron ring• Curved-vane internal airflow geometry• Floating mount with alloy steel drive pins and anti-noise washers• Reduced unsprung and rotational mass for sharper response• Repairable design: replace ring, reuse hub and hardware• Sold/priced per pair
Vehicle Fitment
• Mercedes-AMG E63 — rear axle• Mercedes-AMG GT 53 — rear axle• Always confirm rotor diameter, bolt pattern, and caliper clearance before ordering
Girodisc A2-248 Rear Rotors FAQs
Do they bolt to stock calipers? Yes, the A2-248 system is designed for OEM compatibility—no modifications needed.
How does the floating design benefit braking? Float allows the disc to expand and self-center under thermal load, reducing stress and improving pedal consistency.
Are replacement rings available? Yes. When rings wear out, you can replace just the ring while reusing the hub and hardware to save cost.
Is the rotor sold individually or as a pair? The A2-248 kit includes both rear rotors and is sold per pair.
What kind of pads and fluid should I use? To get the most out of these rotors, use a high-temperature brake fluid and performance brake pads; they help manage fade and keep braking consistent over multiple laps.
Choose the Girodisc A2-248 for your Mercedes E63 or GT53 and enjoy advanced braking performance, precision engineering, and long-term serviceability built for the road and track.
GiroDisc Racing Brakes & Technologies
A2-248DS Girodisc Mercedes E63 / GT53 Rear Rotors (Dimpled & Slotted)
$2,171.00
Girodisc Mercedes E63 / GT53 Rear Rotors (Dimpled & Slotted)
The Girodisc A2-248DS Rear Rotors are a direct replacement for the OEM discs on the Mercedes E63 and GT53. These precision-machined, dimpled and slotted rotors deliver superior braking performance, enhanced cooling, and a substantial reduction in weight. Designed to bolt directly to the car with no modifications required, they maintain the factory brake bias and ABS efficiency while improving response and durability.
Performance Upgrade & Weight Reduction
Each Girodisc assembly is engineered to be approximately 8.1 lbs lighter per rotor than the factory units (16.6 lbs vs. 24.7 lbs). This significant reduction in unsprung and rotational mass allows for improved acceleration, sharper turn-in, and better suspension feedback.
Engineering Excellence
The central hat section of the rotor is crafted from 6061-T6 aircraft-grade aluminum, precision-machined and anodized for strength and corrosion resistance. The outer disc is made from Girodisc’s proprietary high-carbon cast iron alloy, poured and machined in the USA to exacting tolerances. The dimpled and slotted surface design improves pad bite, reduces glazing, and enhances gas evacuation during high-temperature operation.
Floating Mount System
Girodisc rotors utilize a fully floating mount system that connects the iron ring to the aluminum hat using 10 cadmium-plated steel drive pins. The assembly is secured by class 12.9 cap screws and hardened washers, allowing axial and radial movement as the rotor expands under heat. Anti-noise spring washers eliminate rattle and vibration, maintaining quiet operation while preserving true race-grade performance.
Vehicle Fitment
Mercedes-Benz E63 AMG (All variants compatible with iron rotor setup)
Mercedes-Benz GT53 (All compatible rear applications)
Technical Specifications
Part Number: A2-248DS
Position: Rear
Design: Dimpled & Slotted
Material: High-carbon cast iron rotor ring with 6061-T6 aluminum hat
Vane Design: Curved directional vanes
Weight Reduction: 8.1 lbs per rotor vs OEM
Sold/Price: Per pair
FAQs for Girodisc A2-248DS
Are these a direct fit? Yes. The Girodisc A2-248DS rotors bolt directly to the OEM hubs and work with the factory calipers—no modifications required.
What’s the benefit of dimpled and slotted rotors? This design enhances pad cleaning, improves initial bite, and reduces brake fade during high-temperature driving.
Do they make noise? Girodisc’s floating design uses anti-noise spring washers for quiet, street-friendly operation while retaining track-ready performance.
Are the rotors rebuildable? Yes. The iron rings are replaceable—simply reuse the aluminum hats and replace the rings when worn.
Upgrade your Mercedes E63 or GT53 with Girodisc dimpled and slotted rear rotors for the perfect balance of lightweight precision, durability, and performance on the road or track.
GiroDisc Racing Brakes & Technologies
A2-250 Girodisc Porsche GT2 RS Clubsport Rear Rotors
$2,794.00
Porsche GT2 RS Clubsport Front Rotors
The Girodisc system is a direct replacement for the OE front rotors on the Porsche GT2 RS Clubsport. Designed and engineered for the most demanding track environments, these lightweight 2-piece floating rotors bolt directly to the car with no modifications required. They maintain OEM brake bias and ABS functionality while delivering superior cooling, reduced fade, and exceptional braking precision under extreme racing conditions.
Motorsport-Grade Design, Precision-Built in the USA
Each Girodisc rotor assembly is meticulously engineered and manufactured in-house using premium materials. The hat is CNC-machined from 6061-T6 aircraft-grade aluminum for strength and reduced weight, while the rotor rings are made from Girodisc’s proprietary high-carbon iron alloy. The 380mm diameter and 32mm thickness provide greater thermal capacity, ensuring consistent performance through repeated high-speed braking events. The floating mount system allows for controlled expansion under heat, eliminating warping and vibration.
Vehicle Fitment
Porsche 911 GT2 RS Clubsport (991.2)
Porsche 935 (991-based, 2019–2021)
Features
Direct OEM Replacement: Installs directly to factory hubs and calipers with no modifications required.
High Thermal Capacity: Large 380x32mm rotor design for superior heat management and fade resistance.
Lightweight Two-Piece Construction: Reduces unsprung and rotational mass for sharper handling and acceleration.
Curved Vane Cooling: Internal directional vanes pump air through the rotor to maintain consistent braking temperatures.
Floating Mount System: Twelve high-strength drive pins secured with anti-noise spring washers allow the rotor to expand under heat while preventing rattle.
Made in the USA: Fully machined and assembled from U.S.-sourced materials to meet professional racing standards.
FAQs – Porsche GT2 RS Clubsport Front Rotors
Are these rotors compatible with OEM calipers? Yes, they bolt directly to the factory Porsche calipers with no modifications required.
Can they be used on the street? While designed for track use, they function flawlessly for limited street driving as well.
Do they improve performance over OEM rotors? Yes—these rotors offer better cooling, reduced fade, and lighter rotational weight for more consistent lap times.
Are they sold as a pair? Yes, all Girodisc rotors are sold and priced per pair.
Upgrade your Porsche GT2 RS Clubsport with Girodisc’s 2-piece floating front rotors. Experience unmatched braking consistency, reduced fade, and the durability demanded by world-class motorsport performance.
GiroDisc Racing Brakes & Technologies
A2-260 Girodisc Mercedes G63 Rear Rotors
$2,521.00
A2-260 Girodisc Mercedes G63 Rear Rotors
The Girodisc A2-260 Rear Rotors are precision-engineered to replace the heavy factory discs on the Mercedes-Benz G63 AMG. Designed as a direct bolt-on upgrade with no modifications required, these 2-piece floating rotors provide exceptional braking performance while shedding significant unsprung and rotational weight. The result is sharper acceleration, improved suspension response, and reduced heat buildup during aggressive driving.
Lightweight, High-Performance Construction
Each rotor features a CNC-machined 6061-T6 aluminum hat paired with Girodisc’s proprietary cast iron outer ring, manufactured in the USA. This combination reduces each rotor’s weight by approximately 8.1 pounds compared to stock (16.6 lbs vs. 24.7 lbs), dramatically improving responsiveness without compromising braking efficiency. The high-carbon iron construction ensures optimal thermal stability and consistent performance under repeated heavy braking.
Advanced Cooling and Floating Design
The rotors incorporate a curved vane design developed from motorsport applications, functioning like a centrifugal pump to force cooling air through the disc. Girodisc’s floating mount system uses 10 cadmium-plated steel drive pins secured with class 12.9 cap screws and hardened washers. This design allows the disc to expand radially under high temperatures without distortion while anti-noise spring washers ensure quiet street operation.
Vehicle Fitment
Mercedes-Benz G63 AMG (all variants with factory iron rotors)
Direct bolt-on replacement for OEM rear rotors
No modifications or additional hardware required
Technical Specifications
CMS Number: A2-260
Position: Rear
Design: 2-piece floating rotor assembly
Material: Proprietary cast iron ring with 6061-T6 aluminum hat
Vane Design: Curved internal vanes for improved cooling
Weight Savings: ~8.1 lbs per rotor
Hardware: Cadmium-plated steel drive pins with anti-noise washers
Rebuildable: Yes — reusable hat with replacement rings
Sold/Price: Per pair
FAQs for Girodisc A2-260
Do these rotors fit without modification? Yes, the Girodisc A2-260 rear rotors bolt directly to the G63 AMG hub and work perfectly with factory calipers.
What benefits do these provide over OEM rotors? They reduce unsprung mass, enhance cooling, and maintain brake balance and ABS efficiency while delivering faster suspension response.
Are these rotors noisy? No. The anti-noise spring washers eliminate rattle while allowing proper float for thermal expansion.
Can the rotor rings be replaced? Yes. Girodisc rotors are fully rebuildable—just replace the rings when worn and reuse the hats and hardware.
Upgrade your Mercedes G63 AMG with Girodisc’s lightweight, rebuildable rear rotors—engineered to deliver superior cooling, reduced weight, and exceptional braking consistency on both road and track.
GiroDisc Racing Brakes & Technologies
A2-260DS Girodisc Dimpled & Slotted Rear Rotors – Mercedes G63
$2,661.00
Girodisc Dimpled & Slotted Rear Rotors
The Girodisc A2-260DS dimpled & slotted rear rotor kit is engineered to deliver superior braking performance for your Mercedes G63. This two-piece rotor set combines race-proven features—floating mount, cooling vanes, and dimpled/slotted disc surface—to manage heat, reduce fade, and maintain dependable pedal feel under the most demanding conditions.
High-Performance Design for Luxury Off-Road Braking
The rotor hat is crafted from U.S.-sourced 6061-T6 aluminum and precisely machined for strength and weight savings. The friction ring is made from Girodisc’s proprietary cast iron, flux poured and fully machined in-house. Its dimpled & slotted surface improves pad bite and gas/heat dissipation, while the curved-vane internal geometry acts like a cooling pump to push air through the rotor during high-speed driving or spirited off-road use.
Features
• Fitment: Mercedes G63 rear axle• Two-piece rotor design: cast iron ring + aluminum hat• Dimpled & slotted rotor face for enhanced pad bite and heat control• Curved-vane internal geometry for active airflow & cooling• Floating mount system with cadmium-plated alloy steel drive pins and anti-noise washers• Class 12.9 hardware for high torque load retention• Reduces unsprung weight and improves braking consistency• Rings are replaceable—reuse hats and hardware when rings wear out• Sold/priced per pair
Vehicle Fitment
• Mercedes-AMG G63 4×4² / G63 AMG (various years) – Rear • Check your rotor diameter and caliper compatibility before order
Girodisc A2-260DS Rear Rotors FAQs
Will these work with OEM calipers? Yes. The Girodisc A2-260DS kit is designed to bolt directly to stock calipers with no modifications.
What is the benefit of dimpled & slotted surfaces? These features help evacuate gases, maintain pad surface contact, and improve initial bite, especially under heavy use.
Why use a floating two-piece design? The floating mount allows thermal growth of the ring without stress, reduces warpage, and helps self-center the rotor between pads.
Are replacement rings available? Yes. Replacement cast iron rings can be purchased—allowing you to keep your original hats and hardware.
Is this kit sold as a pair? Yes. The A2-260DS kit includes two rear rotors, sold as a pair.
What brake pads and fluid should I use? Performance or track-rated pads combined with high-temperature fluid is recommended to fully capitalize on the cooling and consistency advantages of this rotor setup.
Upgrade your Mercedes G63’s braking performance with the precision, cooling capability, and longevity of the Girodisc A2-260DS Dimpled & Slotted Rear Rotors
GiroDisc Racing Brakes & Technologies
A2-264 Girodisc McLaren 620R Rear Rotors
$2,794.00
McLaren 620R Rear Rotors
The Girodisc system is a direct replacement for the OE rear rotors on the McLaren 620R. Designed for uncompromising track and street performance, these lightweight 2-piece floating rotors bolt directly to the car without any modifications. They maintain factory brake bias and ABS calibration while significantly improving heat dissipation, reducing unsprung mass, and enhancing overall braking consistency.
Precision-Engineered for the Ultimate Track Weapon
Built to handle the extreme braking loads of high-performance McLaren applications, Girodisc rotors are fully machined and assembled in the USA using aerospace-grade materials. The rotor hats are CNC-cut from 6061-T6 aluminum and anodized for durability, while the rings are cast from Girodisc’s proprietary high-carbon iron alloy. This advanced metallurgy ensures strength, thermal stability, and smooth pedal modulation even after repeated heat cycles.
Girodisc A2-264 Vehicle Fitment
McLaren 620R (2020+)
McLaren 570S GT4 (rear fitment)
McLaren 600LT (rear conversion fitment, verify caliper clearance)
Features
Direct OEM Replacement: Bolts directly to factory hubs and calipers—no modifications required.
Lightweight Two-Piece Design: Reduces rotational mass and improves suspension response for sharper handling.
Curved Vane Cooling: Directional internal vanes act as a centrifugal pump to move air through the disc and dissipate heat efficiently.
Floating Mount System: Ten high-strength alloy drive pins and anti-noise spring washers allow controlled expansion while eliminating vibration or rattle.
Replaceable Rotor Rings: The aluminum hats are reusable—only replace the iron rotor rings when worn.
Made in the USA: Engineered, cast, and machined at Girodisc’s U.S. facility to motorsport standards.
FAQs – Girodisc A2-264McLaren 620R Rear Rotors
Are these rotors a direct fit for OEM calipers? Yes, they fit perfectly with the factory McLaren 620R calipers and mounting hardware.
Do they improve cooling over stock rotors? Yes, the curved vane design and floating mount system drastically enhance cooling and prevent warping under high stress.
Can they be used with performance pads? Absolutely. They’re compatible with both OEM and aftermarket racing pad compounds.
Are they sold as a pair? Yes, Girodisc rotors are sold and priced per pair.
Upgrade your McLaren 620R’s rear braking performance with Girodisc’s lightweight floating rotors. Built for endurance, precision, and confidence lap after lap—engineered to match the 620R’s race-bred character.
GiroDisc Racing Brakes & Technologies
A2-266 Girodisc 2-Piece Rear Brake Rotors – GT4 Clubsport
$2,451.00
Girodisc 2-Piece Rear Brake Rotors – GT4 Clubsport
The Girodisc A2-266 rear rotor set is a direct, bolt-on replacement for the OE cup car disc on the GT4 Clubsport platform. Using a lightweight aluminum hat and a proprietary cast-iron ring, these two-piece rotors reduce unsprung weight, improve cooling, and deliver repeatable performance under heavy track use while working perfectly with factory calipers and ABS.
Race-bred construction, bolt-on simplicity
Each rotor features a curved-vane internal design that pumps cooling air through the disc, managing temperatures during long stints. The floating mount uses high-strength alloy steel drive pins and anti-noise spring washers to allow axial and radial float, letting the ring expand with heat and self-center between the pads for consistent pedal feel.
Features
• Direct replacement for OE GT4 Clubsport rear discs• Two-piece design: proprietary cast-iron rings with 6061-T6 aluminum hats (U.S. sourced)• Curved-vane internal geometry for superior cooling• Floating drive-pin system with cadmium-plated hardware and class 12.9 cap screws• Anti-noise spring washers minimize rattle while allowing thermal growth• Reduced unsprung and rotational mass for sharper response• Rings are replaceable; reuse hats when the rings wear out• Sold/priced per pair
Vehicle Fitment
• Porsche Cayman GT4 Clubsport (981) – rear• Porsche 718 Cayman GT4 Clubsport (982) – rear• Note: If your car is equipped with OEM center-lock wheels, select the center-lock drive pin option.
Girodisc A2-266 Rear Rotors – GT4 Clubsport FAQs
Do these rotors fit with the stock calipers and ABS? Yes. They bolt on with no modifications and maintain factory brake bias and ABS functionality.
What is the benefit of the two-piece floating design? It reduces weight, improves cooling, and allows the iron ring to expand under heat without coning or cracking, maintaining a consistent pedal with fewer hot spots.
Are replacement rings available? Yes. When the rings are worn, simply replace the cast-iron rings and reuse the aluminum hats and hardware where applicable.
How many drive pins are used? The A2-266 utilizes a high-strength floating system with multiple alloy steel pins and anti-noise spring washers to allow controlled float and quiet operation.
Are these sold individually or as a set? Sold/priced per pair for the rear axle.
What pads and fluid do you recommend? Pairing performance pads with a quality high-temperature fluid completes a reliable track package and helps prevent fade under extended use.
Upgrade the rear brakes on your GT4 Clubsport with Girodisc A2-266 two-piece rotors for lighter weight, cooler running, and confidence-inspiring consistency every session.
GiroDisc Racing Brakes & Technologies
A2-270 Girodisc Dodge Viper TA Rear Rotors
$1,611.00
Girodisc Dodge Viper TA Rear Rotors
The Girodisc A2-270 Rear Rotor Kit is a lightweight, performance-engineered brake upgrade for the Dodge Viper TA. Designed to replace the factory rotors directly with no modifications, these 2-piece, fully floating assemblies deliver improved cooling, reduced unsprung weight, and increased responsiveness under hard braking.
Lightweight 2-Piece Construction
Each Girodisc assembly combines a CNC-machined 6061-T6 aluminum hat with a proprietary high-carbon cast iron rotor ring. The 2-piece floating configuration significantly reduces rotating mass and unsprung weight, resulting in better suspension response, sharper handling, and faster acceleration. These rotors provide superior heat dissipation and a firmer, more consistent brake pedal feel on both street and track.
Race-Proven Floating Mount System
Girodisc’s advanced floating mount system connects the rotor ring and hat using precision-engineered, cadmium-plated steel drive pins. These pins are secured with grade 12.9 cap screws and hardened washers, allowing the rotors to expand and contract under heat while maintaining axial and radial float. Anti-noise spring washers prevent rattle and ensure quiet operation for street driving.
Vehicle Fitment
Dodge Viper TA (Time Attack)
Compatible with OEM calipers and pads
Direct bolt-on installation — no modifications required
Technical Specifications
CMS Number: A2-270
Position: Rear
Design: 2-piece floating rotor
Material: Proprietary cast iron rotor with 6061-T6 aluminum hat
Vane Design: Curved internal vanes for enhanced cooling
Hardware: Cadmium-plated drive pins, class 12.9 screws, anti-noise washers
Rebuildable: Yes — replaceable iron rings, reusable aluminum hats
Sold/Price: Per pair
FAQs for Girodisc A2-270
Are these rotors a direct replacement for my OEM setup? Yes, the Girodisc A2-270 rotors are a direct bolt-on replacement for the factory Viper TA rotors and work perfectly with OEM calipers.
What advantages do Girodisc rotors offer? They provide superior cooling, reduced weight, and improved pedal consistency for both track and street driving.
Can I replace the rings later? Yes, Girodisc rotors are fully rebuildable—simply replace the iron rotor rings when worn and reuse the aluminum hats.
Do these rotors make noise? No. The anti-noise spring washers eliminate rattling while maintaining the benefits of a fully floating rotor system.
Upgrade your Dodge Viper TA with Girodisc A2-270 Rear Rotors to experience track-proven braking performance, reduced weight, and long-term serviceability—all proudly engineered and manufactured in the USA.
GiroDisc Racing Brakes & Technologies
A2-271 Girodisc Chevrolet Camaro SS (6th Gen) Rear Rotors
$1,611.00
Girodisc Chevrolet Camaro SS (6th Gen) Rear Rotors
The Girodisc A2-271 Rear Rotors are a precision-engineered, direct replacement for the OEM discs on the sixth-generation Chevrolet Camaro SS. Designed to enhance braking performance, reduce weight, and improve cooling, these 2-piece floating rotors deliver track-ready reliability and street-friendly refinement—all while retaining factory fitment and ABS function.
Lightweight Construction & Improved Cooling
By upgrading to Girodisc’s two-piece rotor design, you eliminate unnecessary rotational mass. The lightweight 6061-T6 aluminum hat significantly reduces unsprung weight, improving suspension response and acceleration. The cast-iron outer rings are produced from Girodisc’s proprietary high-carbon alloy, featuring curved internal vanes that act as a centrifugal pump to draw cooling air through the rotor—perfect for high-performance driving and track sessions.
Race-Grade Floating Mount System
The rotors utilize a fully floating mount system that connects the rotor ring to the hat via 10 high-strength alloy steel drive pins. Each pin is cadmium-plated for corrosion resistance and secured with class 12.9 cap screws and hardened washers. Girodisc incorporates anti-noise spring washers to allow thermal expansion while maintaining a rattle-free, quiet operation suitable for both street and track use.
Vehicle Fitment
Chevrolet Camaro SS (6th Generation, 2016+)
Compatible with factory rear calipers
No modifications required — direct bolt-on replacement
Technical Specifications
CMS Number: A2-271
Position: Rear
Design: 2-piece floating rotor
Material: High-carbon cast iron ring with 6061-T6 aluminum hat
Vane Design: Curved directional vanes
Hardware: Cadmium-plated steel drive pins, class 12.9 cap screws
Rebuildable: Yes — replace the rotor rings, reuse the hats
Sold/Price: Per pair
FAQs for the Girodisc A2-271
Are these rotors a direct fit? Yes, the Girodisc A2-271 rear rotors are a direct bolt-on replacement using the OEM calipers and hardware—no modifications needed.
Do they improve braking performance? Absolutely. The reduced rotational mass improves throttle response and suspension compliance, while the curved vanes enhance cooling and fade resistance.
Are they noisy? No. The floating hardware design uses anti-noise spring washers to eliminate rattle and vibration during street driving.
Are these rotors rebuildable? Yes. The rotor rings can be replaced independently, allowing cost-effective rebuilds and extended service life.
Upgrade your Chevrolet Camaro SS (6th Gen) with Girodisc’s lightweight, performance-engineered rear rotors for improved stopping power, cooling efficiency, and long-term value.
GiroDisc Racing Brakes & Technologies
A2-272 Girodisc Porsche 992 GT3, 718 GT4 RS Rear Rotors
$2,451.00
A2-272 Girodisc Porsche 992 GT3, 718 GT4 RS Rear Rotors
Direct‑replacement 2‑piece rear rotors for the 992 GT3/GT3RS and 718 GT4 RS. Bolt‑on fit with factory calipers and pads; floating design controls heat and mass for consistent performance.
A2-272 Girodisc Porsche Rear Rotor Vehicle Fitment
Porsche 992 GT3/GT3RS – Rear (OEM iron brake cars)
Porsche 718 Cayman GT4 RS – Rear
Design & Cooling
High‑carbon iron rings with curved vanes improve airflow and heat capacity. 6061‑T6 aluminum hats are reusable; spring‑preloaded hardware manages thermal growth while minimizing noise.
A2-272 Girodisc Porsche Rear Rotor Features
Direct OE replacement; no modifications required
2‑piece floating construction
Reusable hats; ring‑only service
Sold/priced per pair
GiroDisc Racing Brakes & Technologies
A2-278 Girodisc Ferrari Portofino/Roma Rear Iron Rotor Conversion
$2,661.00
Girodisc Ferrari Portofino / Roma Rear Iron Rotor Conversion
The Girodisc A2-278 Rear Iron Rotor Conversion is engineered to replace the factory rear rotors on Ferrari Portofino and Roma models, offering a robust, high-performance iron alternative built for track use and aggressive street driving. This system integrates seamlessly with the OEM brake setup while providing enhanced durability, cooling, and serviceability.
Design & Engineering
Each rotor merges a 6061-T6 aluminum hat with a proprietary high-carbon cast iron ring, produced and polished in-house. This 2-piece floating configuration allows thermal expansion without distortion. The rotor’s 48 curved vanes act as an internal centrifugal pump, pulling air inward from the hub to cool the disc efficiently under repeated demands.
The floating mount system uses cadmium-plated steel drive pins in concert with Belleville washers and spring clips to maintain pad alignment, prevent rattle, and allow precise rotational movement. This ensures quiet operation during street use while retaining full racing capability.
Vehicle Fitment
Ferrari Portofino (non-CCM models)
Ferrari Roma (excluding carbon ceramic brake variants)
Technical Specifications
Part Number: A2-278
Position: Rear
Material: High-carbon cast iron rotor ring with aluminum hat
Vane Count: 48 curved directional vanes
Hardware: Cadmium-plated steel drive pins, Belleville washers, spring clips
Rebuildable: Replace rotor rings while reusing hats and hardware
Sold/Price: Per pair
Advantages
Improved thermal capacity over OEM cast rotors
Reduced replacement cost compared to carbon ceramic systems
Floating design maintains brake consistency and pad centering
Quiet operation with no rattle in street use
Precision-engineered and manufactured in the USA
FAQs for Girodisc A2-278
Does this require modifications? No. It’s a direct fit replacement for non-CCM Portofino and Roma rears.
Is this suitable for track use? Yes. The conversion is designed to handle elevated heat and repeated high-load braking cycles.
Can I replace only the iron rings? Yes. Replacement rotor rings are available for long-term maintenance without replacing the aluminum hats.
Upgrade your Ferrari Portofino or Roma with Girodisc’s rear iron rotor conversion—premium cooling, lower operating cost, and consistent brake performance.
