GiroDisc Racing Brakes & Technologies
D2-285 Girodisc Ferrari 488 Challenge Evo Rear Replacement Rings
$1,150.00
Girodisc Ferrari 488 Challenge Evo Rear Replacement Rings
Restore your 488 Challenge Evo’s braking edge with Girodisc rear replacement rings, engineered for uncompromising track performance. These high-carbon iron rings are direct replacements for your existing Girodisc two-piece rotors, delivering race-ready thermal stability, smooth pedal modulation, and rebuildable longevity lap after lap.
Vehicle Fitment
Compatible with:• Ferrari 488 Challenge Evo (All Years)Note: These are replacement rotor rings only and are designed to bolt directly to Girodisc aluminum hats using the included hardware kit.
Track-Focused Engineering
Each Girodisc ring is machined from proprietary high-carbon cast iron for superior heat management and crack resistance under extreme braking conditions. The curved vane internal design acts as a centrifugal air pump, efficiently pulling cool air through the disc to lower operating temperatures and reduce fade. Manufactured and finished in the USA, Girodisc replacement rings ensure factory-grade fit and race-grade reliability for serious competition use.
Features
• Direct replacement for Girodisc rear rotors on Ferrari 488 Challenge Evo• Proprietary high-carbon iron casting ensures strength and heat control• Curved directional vane design improves airflow and cooling efficiency• Includes new high-strength assembly hardware• Compatible only with Girodisc aluminum hats• Made and machined in the USA• Sold/priced per pair
Specifications
• Application: Rear axle• Vehicle: Ferrari 488 Challenge Evo• Material: High-carbon cast iron• Includes replacement hardware• Made in the USA• Sold/priced per pair
Girodisc D2-285 Replacement Ring FAQs:
Are these rotors or just the rings? These are replacement friction rings only, designed to mount to your existing Girodisc aluminum hats using the supplied hardware.
Will these fit OEM Ferrari rotor hats? No. Girodisc rings are engineered exclusively for Girodisc hats and will not fit OEM or other aftermarket systems.
What’s included in the kit? Each set includes two replacement rings and a full hardware kit with drive pins, washers, and fasteners.
When should the rings be replaced? Replace your rings once they reach minimum thickness or if cracks extend to the outer edge. This maintains consistent, safe braking performance on track.
Equip your Ferrari 488 Challenge Evo with Girodisc D2-285 replacement rings and maintain the braking precision and durability demanded by serious racers worldwide.
GiroDisc Racing Brakes & Technologies
A2-270 Girodisc Dodge Viper TA Rear Rotors
$1,150.00
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
$1,150.00
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
A1-076 Girodisc Cadillac CTS-V (1st Gen) Front Rotors
$1,150.00
Girodisc Cadillac CTS-V (1st Gen) Front Rotors
The Girodisc front rotors for the first-generation Cadillac CTS-V are engineered for serious performance without compromising everyday drivability. Designed as a direct replacement for the stock rotors, they deliver improved heat management, faster response, and reduced weight — all while maintaining perfect compatibility with your factory calipers and ABS system.
Upgrade Your CTS-V Braking Confidence
Each rotor features a lightweight 6061-T6 aluminum hat mated to Girodisc’s proprietary high-carbon cast iron rings. The curved vane internal design acts like a centrifugal pump, channeling air through the rotor to keep temperatures under control during aggressive driving or track sessions. The result? Shorter stopping distances and fade-free braking lap after lap.
Girodisc A1-076 Features
• Direct replacement for OEM Cadillac CTS-V front rotors• Two-piece floating design for reduced unsprung weight• 6061-T6 aircraft-grade aluminum hat, machined in the USA• High-carbon iron rotor ring with curved internal vanes• Anti-noise spring washers eliminate rattle and vibration• Fully rebuildable — replace only the iron ring when worn• Bolts directly to factory calipers, no modification required
Vehicle Fitment
Compatible with:• 2004–2007 Cadillac CTS-V (1st Generation)Direct bolt-on upgrade. Works perfectly with factory calipers and brake system.
FAQs: Girodisc Cadillac CTS-V (1st Gen) Front Rotors
Do I need special brake pads for these rotors? No, Girodisc rotors are compatible with OEM or aftermarket performance pads designed for the CTS-V.
Will they reduce brake fade? Yes. The curved vane design and high-carbon alloy allow much better cooling under hard braking than the stock rotors.
Are these rotors street-legal? Absolutely. They are engineered for both daily driving and track use, offering quiet operation and long-term durability.
How much lighter are they than stock? Each Girodisc rotor saves several pounds of rotating mass, improving acceleration, cornering, and suspension response.
Step up your Cadillac CTS-V’s braking performance with Girodisc — precision-built, American-made rotors that deliver race-proven stopping power on the street or track.
GiroDisc Racing Brakes & Technologies
A1-151 Girodisc Porsche 996 GT3 Cup Front Rotors
$1,150.00
Porsche 996 GT3 Cup Front Rotors
The Girodisc Front Rotors for the Porsche 996 GT3 Cup are designed as a high-performance, lightweight replacement for the factory brake discs. Precision-engineered to deliver superior cooling, consistency, and durability, these rotors maintain factory balance and ABS performance while dramatically reducing unsprung and rotational weight for improved acceleration and handling.
Direct Replacement Rotors for the 996 GT3 Cup
The Girodisc system is a true bolt-on replacement for the OEM front rotors—no modifications are required. By upgrading to Girodisc’s two-piece floating rotor design, you preserve the car’s factory brake bias and ABS calibration while gaining a significant performance advantage. Each Girodisc front rotor weighs approximately 21.0 lbs compared to 25.6 lbs for the stock units, reducing weight where it matters most and improving suspension response and steering feedback.
Vehicle Fitment
These Girodisc Front Rotors are engineered specifically for:
Porsche 996 GT3 Cup (All model years)
Direct OEM replacement for factory rotors on Porsche 996 GT3 Cup cars. Compatible with original calipers, pads, and mounting hardware.
Features
The central hat section is made from U.S.-sourced 6061-T6 aircraft-grade aluminum, providing strength and reduced unsprung weight. The rotor rings are cast from Girodisc’s proprietary iron alloy, poured and machined entirely in-house in the USA. Each disc incorporates a curved vane internal design developed in racing to act as a centrifugal pump, pulling cooling air through the rotor to dissipate heat and reduce fade under extreme use.
The floating mount system uses 10 high-strength alloy steel drive pins, cadmium plated for long-lasting corrosion resistance and secured with class 12.9 cap screws and hardened washers. Anti-noise spring washers on the rotor side allow for thermal expansion while preventing rattles and noise, ensuring a smooth, quiet operation. The floating design also enables the rotor to self-center between pads, maintaining optimal brake feel and consistent pad contact throughout the temperature range.
Once installed, only the iron rotor rings need replacement as they wear, allowing the aluminum hats to be reused—significantly lowering long-term operating costs while delivering world-class performance on the track.
FAQs: Porsche 996 GT3 Cup Front Rotors
Do these rotors fit the factory GT3 Cup calipers? Yes, the Girodisc system bolts directly to the car and is fully compatible with the factory GT3 Cup calipers and pad shape.
How much lighter are these than OEM rotors? Each Girodisc front rotor saves approximately 4.6 lbs compared to the stock unit, improving both suspension response and acceleration.
Are these rotors suitable for endurance racing? Absolutely. Girodisc rotors are designed to withstand sustained high temperatures and heavy use in professional motorsport environments.
Do I need to change brake pads when installing Girodisc rotors? You can continue using the factory pad shape, or upgrade to any high-performance compound compatible with the GT3 Cup calipers.
Can I replace just the iron rings later? Yes, Girodisc rotors are designed for serviceability—once installed, only the iron rings need replacing when worn.
Enhance your Porsche 996 GT3 Cup’s braking power with the Girodisc Front Rotors—precision-engineered, track-proven, and made entirely in the USA for professional-level performance and reliability.
GiroDisc Racing Brakes & Technologies
A1-191 Girodisc Audi RS3 Sportback (8V) Front Rotors
$1,150.00
Audi RS3 Sportback (8V) Front Rotors
Girodisc 2-piece floating front rotors are a direct replacement for the RS3 Sportback (8V) factory discs—no modifications required. They preserve OEM brake bias and ABS while improving cooling and pedal consistency.
Each rotor weighs ~24.0 lbs versus ~27.4 lbs for stock, cutting unsprung and rotating mass for quicker response and acceleration.
Precision-Engineered Performance
Vehicle Fitment
Audi RS3 Sportback (8V)
Features
Direct OEM fit: Bolts to factory hubs and calipers with zero modifications.
Curved vane ventilation: Directional vanes act as a centrifugal pump to move cooling air through the disc.
Floating mount hardware: Ten high-strength alloy steel drive pins with anti-noise spring washers allow silent thermal float.
Serviceable design: Reuse the aluminum hats and replace only the iron rings when worn.
Made in the USA: Hats machined from 6061-T6; rings poured and finished in-house by Girodisc.
FAQs
Do these fit OEM calipers? Yes. They are designed as a true bolt-on for the RS3 8V front brakes.
Will I notice pedal feel improvements? Reduced mass and better ventilation deliver a firmer, more consistent pedal under repeated stops.
Are they street friendly? Absolutely—quiet operation with anti-noise hardware, yet durable for track days.
Sold individually or as a pair? Sold and priced per pair.
Upgrade your RS3 8V with Girodisc floating rotors for cooler operation, reduced fade, and confidence-inspiring braking on street or circuit.
GiroDisc Racing Brakes & Technologies
A1-197 Girodisc Audi RS3 Sportback (8P) Front Rotors
$1,150.00
Audi RS3 Sportback (8P) Front Rotors
Give your Audi RS3 the braking performance it deserves with Girodisc’s lightweight 2-piece floating front rotors. Designed as a direct replacement for the factory discs, they reduce weight, improve cooling, and maintain perfect OEM brake bias and ABS function. These rotors are ideal for RS3 owners who demand consistent performance on both the street and track.
Lightweight Design. Maximum Control.
Built in the USA from premium materials, each Girodisc rotor features a 6061-T6 aluminum hat paired with proprietary high-carbon iron rings. The curved internal vane design draws cooling air through the rotor, keeping brake temperatures stable under repeated hard stops. This design not only prevents fade but also sharpens pedal response for predictable, confident braking.
Vehicle Fitment
Audi RS3 Sportback (8P, 2009–2012)
Audi TT RS (8J) front brake setup
Features
Direct OEM Fit: Bolts to factory hubs and calipers with no modifications.
Two-Piece Floating Construction: Reduces unsprung mass and increases thermal efficiency.
Curved Vane Cooling: Internal directional vanes pull air through the disc for consistent temperature control.
Noise-Free Hardware: Anti-noise spring washers prevent rattles while maintaining precise float.
Replaceable Rings: Reuse the hats—simply replace the iron rings when worn.
Made in the USA: Machined, cast, and assembled in-house under strict quality control.
FAQs – Audi RS3 Sportback Front Rotors
Are these rotors plug-and-play? Yes, they install directly on factory hubs and calipers with no changes required.
Will they fit the TT RS? Yes, they’re compatible with the 8J TT RS brake system as well.
Do they reduce fade? Absolutely—the curved vane system enhances airflow, preventing overheating under heavy braking.
Are they street-friendly? Yes, these rotors are quiet and smooth enough for daily use while excelling on track.
Upgrade your Audi RS3’s braking system with Girodisc’s precision floating rotors for unmatched stopping power, cooler operation, and lasting reliability.
GiroDisc Racing Brakes & Technologies
A1-270 Girodisc Dodge Viper TA, ACR-X Front Rotors
$1,150.00
Dodge Viper TA, ACR-X Front Rotors
The Girodisc system is a direct replacement for the OE front discs on the Dodge Viper TA and ACR-X. No modifications are necessary—the rotors bolt directly to the car and work seamlessly with factory calipers. By upgrading to these lightweight, high-performance rotors instead of a full big-brake kit, you’ll maintain your OEM brake bias and ABS calibration while dramatically improving braking performance and heat control.
Track-Proven Design, Made in the USA
Each Girodisc rotor is engineered and machined in the United States using premium materials for maximum reliability under the most demanding conditions. The central hat section is CNC-machined from 6061-T6 aircraft-grade aluminum, while the cast-iron rings are poured from Girodisc’s proprietary high-carbon alloy for exceptional durability and thermal stability. With a 48-vane directional cooling design, these rotors act as centrifugal pumps, pulling cool air through the disc to reduce fade and extend pad life.
Vehicle Fitment
Dodge Viper TA (Time Attack)
Dodge Viper ACR-X
Dodge Viper SRT (with factory Brembo calipers)
Features
Direct OEM Replacement: Fits factory hubs and calipers—no modifications required.
Lightweight Construction: Significantly reduces unsprung and rotational mass for improved handling and responsiveness.
48 Curved Directional Vanes: Provide superior cooling and consistent performance during repeated hard stops.
Floating Mount System: Uses 8–10 high-strength alloy steel drive pins and anti-noise spring washers for silent, precise operation under thermal expansion.
Made in the USA: Fully machined and assembled at Girodisc’s facility from domestically sourced materials.
FAQs – Dodge Viper TA, ACR-X Front Rotors
Do these rotors fit the OEM calipers? Yes, they’re designed to work perfectly with the stock Brembo calipers on the Viper TA and ACR-X models.
Can these be used for track racing? Absolutely. Girodisc rotors are built to withstand repeated track abuse while remaining quiet and reliable for street use.
Do they come with hardware? All necessary hardware is included, and installation is a direct bolt-on.
Are they sold individually or in pairs? Each listing is sold and priced per pair.
Upgrade your Dodge Viper’s braking system with Girodisc lightweight, floating two-piece rotors. Experience reduced fade, quicker cooling, and precise brake modulation for every lap and every stop.
GiroDisc Racing Brakes & Technologies
A1-012 Girodisc BMW E46 M3 Front Rotors (345×28 mm, ZCP/CSL)
$1,150.00
A1-012 Girodisc BMW E46 M3 Front Rotors (345×28 mm, ZCP/CSL)
These Girodisc A1-012 2-piece rotors are a direct replacement for the BMW E46 M3 with the 345 mm front brake setup found on Competition Package (ZCP) and CSL models. At just ~17.5 lb per rotor, the fully floating design helps shed unsprung and rotating mass while retaining OEM calipers, ABS, and brake bias.
Vehicle Fitment
BMW E46 M3 (ZCP/Competition Package) – Front
BMW E46 M3 CSL – Front
High-Carbon Rings & Curved-Vane Cooling
The rings are machined from a proprietary high-carbon iron casting for durability and heat capacity. 48 curved internal vanes act as a centrifugal pump, drawing cooling air through the hub to stabilize temps under hard use. The 2-piece design allows reuse of the aluminum hat with D1-012 rings when needed.
Dimensions
Diameter: 345 mm
Thickness: 28 mm
Weight: ~17.5 lb per rotor assembly
Features
Direct OEM replacement for ZCP/CSL 345 mm front rotors
2-piece floating construction reduces unsprung & rotational mass
Reusable 6061-T6 aluminum hats; black anodized finish
High-strength cadmium-plated hardware, spring clips & Belleville washers
Manufactured and assembled in Bellingham, WA
Sold/priced per pair
A1-012 FAQs
Does this fit non-ZCP E46 M3? It’s designed for the 345 mm ZCP/CSL front package. Non-ZCP cars typically use smaller front rotors.
Minimum service thickness? Replace rings at 26 mm, or sooner if a crack reaches the outer edge.
Which replacement rings? Use D1-012 front rings (pair with hardware) for Girodisc hats.
Aftermarket calipers? The geometry is compatible with common swaps (e.g., Brembo 996 and Megane RS kits) as well as the OEM sliding calipers used on ZCP/CSL.
GiroDisc Racing Brakes & Technologies
A1-298 Girodisc Audi 8Y RS3 Front Rotors
$1,150.00
A1-298 Girodisc Audi 8Y RS3 Front Rotors
These Girodisc A1-298 2-piece slotted front rotors are a direct bolt-on for the 2022+ Audi RS3 (8Y) with factory iron brakes. Floating construction reduces unsprung and rotational mass while preserving OE calipers, ABS, and brake bias. (For cars optioned with front carbon-ceramic brakes, see the separate Iron Conversion kit A1-355.)
Vehicle Fitment
Audi RS3 (8Y) 2022+ – Front
Direct fit for OEM iron-brake cars. For PCCB/CCB cars, use the dedicated Iron Conversion listing.
High-Carbon Rings & Curved-Vane Cooling
Proprietary high-carbon iron rings and curved internal vanes act as a centrifugal pump to pull cooling air through the rotor. Spring-preloaded floating hardware allows thermal growth while minimizing noise for street use.
Features
Direct OE replacement; no modifications required
2-piece floating design reduces unsprung/rotational mass
High-carbon iron rings; reusable 6061-T6 aluminum hats
Cadmium-plated high-strength hardware with spring clips & Belleville washers
Manufactured and assembled in Bellingham, WA
Sold/priced per pair
A1-298 FAQs
Does this fit carbon-ceramic (PCCB/CCB) cars? No — for CCB cars use the A1-355 Front Iron Conversion.
Do I need new calipers or brackets? No — the rotors bolt to OE hubs and work with the factory calipers.
GiroDisc Racing Brakes & Technologies
A1-311 Girodisc Audi B9 S4, S5, SQ5 Front Rotors
$1,150.00
A1-311 Girodisc Audi B9 S4, S5, SQ5 Front Rotors
These Girodisc A1-311 two-piece front rotors are a direct, bolt-on replacement for the B9 S4, S5, and SQ5. The fully floating design sheds unsprung weight and improves cooling versus OE one-piece rotors while retaining factory calipers, ABS, and brake bias.
Vehicle Fitment
Audi S4 (B9) – Front
Audi S5 (B9) – Front
Audi SQ5 (B9) – Front
High-Carbon Rings, Curved Vanes
Proprietary high-carbon iron rings use curved internal vanes to draw cooling air through the disc. Reusable 6061-T6 aluminum hats and cadmium-plated drive pins control thermal growth and maintain quiet street manners.
Features
Direct OE replacement; no mods required
Two-piece floating design reduces unsprung weight
High-carbon iron rings with curved vane cooling
Reusable aluminum hats; new hardware included
Manufactured and assembled in Bellingham, WA
A1-311 FAQs
Pad compatibility? Works with OE or performance pad compounds.
Bed-in needed? Yes—perform a standard bedding procedure after install.
Front ring part number? D1-311 front replacement rings.
Related Products
D1-311 Girodisc Audi B9 S4, S5, SQ5 Front Replacement Rings
A2-130 Girodisc Audi B8/B9 Rear Rotors
D2-130 Girodisc Audi 330mm Rear Replacement Rings
GiroDisc Racing Brakes & Technologies
A1-310 Girodisc Mercedes A45, CLA45, GLA45 Front Rotors
$1,150.00
A1-310 Girodisc Mercedes A45, CLA45, GLA45 Front Rotors
The Girodisc A1-310 two-piece front rotors are a direct, bolt-on upgrade for the AMG 45 platform. They retain factory calipers and brake bias while reducing unsprung weight and improving heat management compared to one-piece OE discs.
Vehicle Fitment
Mercedes-AMG A45 (W176) – Front
Mercedes-AMG CLA45 (C117) – Front
Mercedes-AMG GLA45 (X156) – Front
Lightweight, High-Flow Design
The curved-vane iron rings act as a centrifugal pump to pull air through the disc, while the reusable 6061-T6 aluminum hats and floating hardware maintain quiet street manners and race-ready thermal expansion control.
Features
Direct OE replacement; no modifications required
2-piece floating construction with reusable aluminum hats
High-carbon iron rings with curved internal vanes for cooling
Cadmium-plated high-strength drive pins with Belleville springs
Manufactured and assembled in Bellingham, WA
Sold/priced per pair
A1-310 FAQs
Will these work with factory pads? Yes — they’re compatible with OE and performance pad compounds.
Any noise from the floating hardware? Spring washers pre-load the pins to prevent rattles during street use.
Do I need new lines or brackets? No, these mount to stock hubs and calipers with OE hardware.
What rings replace these later? Use D1-310 front replacement rings.
Related Products
A2-044 Girodisc Mercedes A45, CLA45, GLA45 Rear Rotors
D1-310 Girodisc Mercedes A45, CLA45, GLA45 Front Replacement Rings
D2-044 Girodisc Mercedes A45, CLA45, GLA45 Rear Replacement Rings
GiroDisc Racing Brakes & Technologies
A2-307 Girodisc Toyota GR Supra, BMW Rear Brake Rotors
$1,150.00
Girodisc Toyota , BMW Rear Brake Rotors
These Girodisc A2-307 2-piece rear rotors directly replace the 345 mm rear rotor package on Toyota GR Supra 3.0 and select BMW G-chassis models. Floating construction reduces rotating mass and improves cooling while maintaining OE parking brake and ABS.
Vehicle Fitment
Toyota GR Supra 3.0 (A90/A91) – Rear
BMW G20/G21 M340i – Rear
BMW G22/G23 M440i – Rear
BMW G20/G22 with optional M Sport brakes – Rear
BMW G01 X3 M40i & G02 X4 M40i – Rear
BMW G29 Z4 M40i – Rear
Applies to vehicles equipped with the 345 mm rear rotor package.
Curved-Vane Cooling
High-carbon iron rings with 48 curved vanes act as a centrifugal pump to move air through the disc. Reusable hats and spring-preloaded floating hardware allow thermal expansion without rattle for street use.
Girodisc A2-307 Features
Direct OE replacement; no modifications required
2-piece floating construction reduces unsprung/rotational mass
High-carbon iron rings; reusable 6061-T6 aluminum hats
48-vane internal geometry for airflow and cooling
Manufactured and assembled in Bellingham, WA
Sold/priced per pair
FAQs for the Girodisc A2-307
Minimum service thickness? Replace rear rings at 22 mm or sooner if a crack reaches the edge.
Parking brake and shields? Retained — dimensions keep OE parking brake function and shield clearances.
Related Products
D2-307 Girodisc Toyota GR Supra, BMW 345mm Rear Replacement Rings
A1-307 Girodisc Toyota GR Supra, BMW 348mm Front Rotors
D1-307 Girodisc Toyota GR Supra, BMW 348mm Front Replacement Rings
GiroDisc Racing Brakes & Technologies
A1-307 Girodisc 2 Pc Front Brake Rotors (348mm)
$1,150.00
A1-307 Girodisc Toyota GR Supra, BMW 348mm Front Rotors
Price: $1,150.00
These Girodisc A1-307 2-piece front rotors are a direct bolt-on for the Toyota GR Supra 3.0 and BMW G-chassis models equipped with a 348 mm front rotor. Floating construction trims unsprung/rotational mass while preserving OE caliper/ABS function. Replacement rings: D1-307.
Vehicle Fitment
Toyota GR Supra 3.0 (A90/A91) – Front
BMW G20/G21 M340i – Front
BMW G22/G23 M440i – Front
BMW G20/G22 with optional M Sport brakes – Front
BMW G01 X3 M40i & G02 X4 M40i – Front
BMW G29 Z4 M40i – Front
Above applications reflect the 348 mm front rotor package on G-chassis cars.
High-Carbon Rings, 72 Curved Vanes
Proprietary high-carbon iron rings use 72 curved vanes to pull cooling air through the hub for stable temperatures under repeated hard stops. Reusable 6061-T6 hats and cadmium-plated hardware maintain quiet, street-friendly float.
Features
Direct OE replacement; no modifications required
2-piece floating design reduces unsprung/rotational mass
High-carbon iron rings; reusable aluminum hats
72-vane internal geometry for strong airflow
Manufactured and assembled in Bellingham, WA
Sold/priced per pair
A1-307 FAQs
Minimum service thickness? Replace front rings at 34 mm or sooner if a crack reaches the edge.
Do these require new calipers? No — they bolt to OE hubs and run with factory calipers/ABS.
Which rings fit later? D1-307 front replacement rings.
Related Products
D1-307 Girodisc Toyota GR Supra, BMW 348mm Front Replacement Rings
A2-307 Girodisc Toyota GR Supra, BMW 345mm Rear Rotors
D2-307 Girodisc Toyota GR Supra, BMW 345mm Rear Replacement Rings
Stilo S.r.l.
Stilo Venti WRC Composite Helmet | FIA 8859-2015 & SA2020
$1,150.00
Stilo Venti WRC Composite Helmet
Uncompromising Safety and Performance
The Stilo Venti WRC helmet line, including the Venti WRC Composite, is an update of Stilo's legendary WRC helmets worn by multiple rally racing champions. The Stilo Venti WRC Composite helmet features several improvements, most notably the innovative wireless (WL) communication system. An available wireless key allows the driver and co-driver to continue to communicate even when outside the race car.
The new Stilo Venti WRC Composite auto racing helmet features lightweight construction using the smallest of Stilo's helmet shells for the lightest, most compact helmet available. The Stilo Venti WRC Composite helmet is FIA 8859-2015 and SA2020 certified. With its unique ventilation system, the Stilo Venti WRC Composite helmet offers superior airflow, keeping you cool and focused during long races and under extreme conditions.
The interior padding of the Stilo Venti WRC Composite helmet can be easily removed and cleaned, ensuring a fresh and comfortable fit for every race. The Venti WRC Composite is equipped with innovative noise-canceling features and a redesigned mic boom with improved geometry for maximum sound quality and visibility.
The Stilo Venti WRC Composite helmet has an all-new aggressive design featuring an adjustable visor, allowing you to customize your field of view for different driving conditions (e.g., low sun). The Stilo Venti WRC Composite helmet is a professional helmet at the pinnacle of safety, performance, and value in motorsport.
Wireless Communication Innovations Only From Stilo
The microphone boom in the Stilo Venti WRC Composite has been reshaped to reject more cabin noise, improving communication clarity between driver and co-driver. The dynamic noise-canceling microphone is adjustable to allow for optimum spacing from the mouth, further reducing noise and improving clarity. The speakers in the Stilo Venti WRC Composite helmet sit in noise-attenuating ear muffs, greatly reducing external noise and improving comfort. The Stilo Venti WRC helmet's electronics are compatible with traditional wired amplifiers or the new wireless amplifiers.
The Stilo Venti WRC helmet is supplied with factory-fitted HANS post anchors as standard.
Stilo Venti WRC Composite Helmet Details:
Manufacturer: Stilo Helmets
Manufacturer part no.:AA0220BG2T
Homologation: FIA 8859-2015 and Snell SA2020
Shell material: Fiberglass Kevlar MSF(Multi-Sandwich Fiber)
Weight1: Small Shell ~3.3 lbs; Medium Shell ~3.4 lbs; Large Shell ~3.6 lbs.
Adjustable peak visor
HANS post anchors pre-installed
Also available with FIA 8860-2018 certification
How to Measure Your Head for a Properly-Fitting Racing Helmet
The most effective auto racing helmet is one that fits your head properly. Your helmet should fit snug all around your head without putting undue pressure on any point. It should not move around when you shake your head side-to-side or up-and-down. (If it does, imagine what it will do in a crash.)
To measure your head, have an assistant use a dressmaker's tape or a piece of string to measure the circumference of your head. Start at a point about an inch above your eyebrows, looping around the back of your head at the point that results in the largest measurement, and finally around to the front again. It's a good idea to take two or three measurements to make sure you have the largest one.
This helmet will ship with signature required for delivery.
1 Weight may vary based on installed accessories.
GiroDisc Racing Brakes & Technologies
A2-211 Girodisc Chevrolet Camaro SS, ZL1 Rear Rotors
$1,150.00
Girodisc Chevrolet Camaro SS, ZL1 Rear Rotors
Upgrade your Camaro’s stopping power with Girodisc’s lightweight two-piece rear rotors. Designed as a direct replacement for factory units, these precision-engineered rotors reduce unsprung weight while improving braking consistency and cooling performance for both street and track use.
Lightweight, Track-Proven Performance
Each Girodisc rotor is crafted from proprietary cast iron with a billet 6061-T6 aluminum hat, machined and assembled in the USA. The floating two-piece design allows the rotor to expand under heat without warping or distortion, maintaining consistent pad contact and pedal feel. The result is better modulation, reduced fade, and faster recovery lap after lap.
Features
• Direct replacement for factory rear rotors – no modifications required• Aircraft-grade 6061-T6 aluminum hats with durable anodized finish• Proprietary high-carbon cast iron discs made and machined in the USA• Floating mount system using cadmium-plated alloy steel drive pins• Curved directional vanes promote superior air flow and heat dissipation• Lighter than OEM rotors, improving suspension response and acceleration• Fully serviceable design – only replace iron rings when worn
Vehicle Fitment
Chevrolet Camaro SS (2016–present)Chevrolet Camaro ZL1 (2017–present)Fits models equipped with factory Brembo rear calipers.
Girodisc A2-211 Rear Rotor FAQs:
Do these Girodisc rotors fit both manual and automatic Camaro SS models? Yes, they fit all 2016+ Camaro SS and ZL1 models equipped with the factory Brembo brake system, regardless of transmission.
Will I need to upgrade my brake pads when installing these? It’s highly recommended to use a fresh set of pads compatible with iron rotors to ensure proper bedding and optimal braking performance.
How much lighter are Girodisc rotors compared to OEM units? Each rotor typically weighs 3–5 lbs less than the OEM cast iron equivalent, significantly reducing unsprung and rotational mass.
Are Girodisc rotors suitable for daily driving? Absolutely. Girodisc rotors deliver exceptional street manners while being durable enough for heavy track use.
Enhance your Camaro’s braking performance and shed unnecessary weight with Girodisc’s precision-engineered rear rotors. Order today and experience smoother, stronger stops on every drive.