GiroDisc Racing Brakes & Technologies
D1-078 Girodisc Alfa Romeo 4C Front Replacement Rings
$680.00
D1-078 Girodisc Alfa Romeo 4C Front Replacement Rings
Upgrade your Alfa Romeo 4C’s stopping power with Girodisc D1-078 305mm front replacement rings. Designed as direct replacements for Girodisc’s two-piece rotor systems, these precision-machined rings bolt onto your existing Girodisc aluminum hats using the supplied floating hardware kit. Each ring is made from Girodisc’s proprietary high-carbon cast iron for improved thermal control, consistent pedal feel, and fade-free braking under demanding conditions.
Vehicle Fitment
Compatible with:• Alfa Romeo 4C (2015–2020)• Fits Girodisc 305mm two-piece front rotor systemsNote: These rings are designed for Girodisc aluminum hats only. They are not compatible with OEM one-piece or carbon-ceramic rotors.
Features
• Sold as a left/right pair with complete floating hardware kit• Direct replacements for Girodisc 305mm two-piece front rotors• CNC-machined from high-carbon iron alloy for strength and consistent performance• Directional curved vanes optimize cooling and reduce heat buildup• Maintains OEM brake bias, ABS, and ESC calibration• Lightweight two-piece design reduces unsprung weight• Designed exclusively for Girodisc aluminum hats
Specifications
• Diameter: 305 mm• Position: Front• Material: High-carbon cast iron• Mount type: Floating two-piece system• Includes: Two rotor rings and hardware kit• Sold/priced per pair
Girodisc D1-078 Alfa Romeo 4C Front Ring FAQs
Can these be used with factory Alfa Romeo rotors? No. These are designed only for Girodisc aluminum hats and cannot mount to OEM one-piece rotors or hardware.
Do these rotors improve braking over stock? Yes. The high-carbon alloy and floating design improve thermal stability, reduce fade, and enhance braking modulation during aggressive driving or track sessions.
What pad compounds are recommended? For street and light track use, Ferodo DS2500 or Hawk HPS 5.0 provide excellent control. For racing, Pagid RS29 or Endless ME20 deliver superior high-temp performance.
What torque should I use on the rotor bolts? Torque each fastener to 12 ft-lbs (16 Nm) using blue Loctite. Recheck after one full heat cycle to ensure proper float and hardware security.
Enhance your Alfa Romeo 4C’s agility and braking consistency with Girodisc D1-078 305mm front replacement rings — precision-built for lightweight performance, heat control, and lasting durability.
GiroDisc Racing Brakes & Technologies
D1-114 Girodisc BMW E9X 335i Front Replacement Rings
$680.00
D1-114 Girodisc BMW E9X 335i Front Rings
Restore confidence in your BMW’s braking performance with Girodisc D1-114 355mm front replacement rings. These precision-engineered components bolt directly to your existing Girodisc aluminum hats using the included floating hardware kit. Each ring is machined from Girodisc’s proprietary high-carbon cast iron alloy, delivering enhanced cooling, fade resistance, and consistent pedal feedback for both street and track use.
Vehicle Fitment
Compatible with:• BMW E90 335i Sedan (2007–2011)• BMW E92 335i Coupe (2007–2013)• BMW E93 335i Convertible (2007–2013)• Compatible with models equipped with OEM Performance Brake Package or Girodisc two-piece front rotorsNote: Designed exclusively for Girodisc 355mm two-piece front rotor systems. Not compatible with OEM one-piece or carbon-ceramic discs.
Features
• Sold as a left/right pair with complete floating hardware kit• Direct replacements for Girodisc 355mm two-piece front rotors• CNC-machined from high-carbon cast iron for superior strength and heat control• Directional curved vanes improve airflow and cooling during extended braking• Maintains OEM brake bias, ABS, and DSC calibration• Precision-balanced for vibration-free operation and consistent modulation• Designed exclusively for Girodisc aluminum hats
Specifications
• Diameter: 355 mm• Position: Front• Material: High-carbon cast iron• Mount type: Floating two-piece system• Includes: Two rotor rings and new hardware kit• Sold/priced per pair
Girodisc D1-114 BMW E9X 335i Front Ring FAQs
Can these be installed with OEM BMW rotor hats? No. The D1-114 rings are designed for Girodisc aluminum hats only and will not fit factory one-piece rotors.
Which brake pads are ideal for this setup? For street use, Ferodo DS2500 or Hawk HPS 5.0 pads provide quiet operation and smooth bite. For track use, Pagid RS29 or Carbotech XP10 offer consistent friction under high heat.
What torque should be applied to the hardware? Torque each bolt to 12 ft-lbs (16 Nm) using blue Loctite, and recheck after one full heat cycle or initial track session.
Are these rotors directional? Yes. Each rotor is labeled for left and right installation, ensuring the curved vanes circulate air efficiently for maximum cooling performance.
Upgrade your BMW 335i’s braking system with Girodisc D1-114 355mm front replacement rings — designed for precision, cooling, and reliability on the street or track.
GiroDisc Racing Brakes & Technologies
D1-185 Girodisc Subaru WRX STI (’18+) Front Replacement Rings
$680.00
D1-185 Girodisc Subaru WRX STI (2018+) Front Replacement Rings
Bring your WRX STI’s braking system back to full strength with Girodisc D1-185 340 mm front replacement rings. These high-performance rings bolt directly to your existing Girodisc aluminum hats using the included floating hardware kit. Each ring is CNC-machined from Girodisc’s proprietary high-carbon iron alloy for superior thermal control, consistent bite, and fade-resistant performance in street or track conditions.
Vehicle Fitment
Compatible with:• Subaru WRX STI (2018 and newer, Brembo 6-piston front calipers)Note: Designed for Girodisc 340 mm two-piece front rotor systems. Not compatible with OEM one-piece rotors or earlier 4-piston STI setups.
Features
• Sold as a left/right pair with complete floating hardware kit• Direct replacements for Girodisc 340 mm two-piece front rotors• High-carbon iron construction for stable performance at high temperatures• Directional curved vanes improve airflow and cooling efficiency• Maintains OEM brake bias and ABS calibration• Precision-balanced for quiet, vibration-free operation• Designed exclusively for Girodisc aluminum hats
Specifications
• Diameter: 340 mm• Position: Front• Material: High-carbon cast iron• Mount type: Floating two-piece system• Includes: Two rotor rings and new hardware kit• Sold/priced per pair
Girodisc D1-185 Subaru WRX STI (2018+) Front Replacement Ring FAQs
Do these fit directly on the OEM Subaru rotor hats? No. The D1-185 rings are specific to Girodisc aluminum hats and will not fit factory one-piece rotors.
What torque should I use for the drive-pin bolts? Girodisc recommends 12 ft-lbs (16 Nm) with blue Loctite applied to each fastener; safety-wire if desired for track use.
Are these compatible with aftermarket pads like Ferodo DS2500 or Hawk DTC-60? Yes. These rings work with all STI-fit pad compounds and perform best after a proper bedding cycle.
How long do these typically last under heavy track use? Track-driven STIs see roughly 25–35 hours of hard use per set; street cars often exceed 50,000 miles depending on pad material and driving style.
Enhance your Subaru WRX STI with Girodisc D1-185 340 mm front replacement rings — precision-engineered for heat resistance, longevity, and confidence lap after lap.
GiroDisc Racing Brakes & Technologies
D1-204 Girodisc Kia Stinger GT / Genesis G70 Front Replacement Rings
$680.00
Girodisc Kia Stinger GT, Genesis G70 Front Replacement Rings
Give your Stinger GT or Genesis G70 the braking precision it deserves with Girodisc D1-204 355 mm front replacement rings. Designed to bolt directly to your existing Girodisc aluminum hats using the supplied floating hardware kit, these rings combine advanced metallurgy with proven motorsport engineering for fade-free, predictable braking whether you’re carving corners or commuting daily.
Vehicle Fitment
Compatible with:• Kia Stinger GT (2018 – present, front)• Genesis G70 3.3T (2019 – present, front)Note: These rings fit Girodisc 355 mm two-piece front rotor systems only and are not compatible with OEM one-piece rotors or other brands.
Features
• Sold as a left/right pair with complete floating hardware kit• Direct replacements for Girodisc 355 mm two-piece front rotors• High-carbon cast-iron construction for superior heat management and strength• Directional curved vanes maximize cooling airflow• Maintains OEM brake bias and ABS/ESC functionality• Precision-balanced for quiet, vibration-free performance• Designed exclusively for Girodisc aluminum hats
Specifications
• Diameter: 355 mm• Position: Front• Material: High-carbon cast iron• Mount type: Floating two-piece system• Includes: Two rotor rings and new hardware kit• Sold/priced per pair
Girodisc D1-204 Kia Stinger GT / Genesis G70 Front Replacement Ring FAQs
Can I reuse my factory rotor hats? No. These rings are built specifically for Girodisc aluminum hats and will not bolt to OEM rotors.
Are they compatible with OEM Brembo calipers? Yes. They maintain the factory offset and pad contact area for both Kia and Genesis Brembo setups.
How do they handle track temperatures? The high-carbon alloy and curved-vane design ensure stable performance and minimal fade through long sessions.
Do these require any special bedding procedure? Yes — use a standard pad/rotor bedding cycle of 8–10 gradual stops to transfer pad material and optimize performance.
Upgrade your Kia Stinger GT or Genesis G70 with Girodisc D1-204 355 mm front replacement rings — precision-machined for cooling, consistency, and confidence on both street and track.
GiroDisc Racing Brakes & Technologies
D2-114 Girodisc BMW E9X 335i Rear Replacement Rings
$680.00
Girodisc BMW E9X 335i Rear Rings
Maintain the precise braking feel of your BMW 335i with Girodisc D2-114 rear replacement rings. These direct-fit 328mm rings are designed to bolt onto your existing Girodisc aluminum hats, letting you replace only the rotor surface instead of the full assembly. Each set includes both left and right rings plus a complete floating hardware kit, restoring your braking performance to factory-fresh condition.
Vehicle Fitment
Compatible with:• BMW 335i / 335is (E90 / E92 / E93 chassis)• BMW 335d (E90 chassis)Note: For vehicles equipped with Girodisc 328mm two-piece rear rotor systems. Not compatible with OEM or carbon-ceramic rotors.
Features
• Sold as a left/right pair with new hardware kit• Direct replacements for Girodisc 328mm two-piece rear rotors• CNC-machined from high-carbon cast iron for improved heat capacity• Directional curved vanes enhance cooling efficiency• Maintains OEM brake bias and ABS function• Designed exclusively for Girodisc aluminum hats – not compatible with OEM or other brands
Specifications
• Diameter: 328mm• Position: Rear• Material: High-carbon cast iron• Mount type: Floating two-piece system• Includes: Two rings and hardware kit• Sold/priced per pair• MSRP: $680.00
Girodisc D2-114 Replacement Ring FAQs
Will these fit OEM BMW rotors? No. These are designed specifically for Girodisc two-piece rotor systems and will not bolt to factory rotors.
Are both sides included? Yes. Each D2-114 kit includes both left and right replacement rings plus a complete hardware set.
Why replace only the rings? Replacing just the rings saves cost and retains your Girodisc hats, providing consistent braking and reduced unsprung weight.
Do I need to replace the hardware? Yes. Always use the supplied new hardware to ensure safe and precise installation.
Upgrade your BMW E9X 335i braking system with Girodisc D2-114 rear replacement rings — precision-engineered for thermal efficiency, strength, and fade-free performance on both street and track.
GiroDisc Racing Brakes & Technologies
D2-217 Girodisc Hyundai N 314mm Rear Replacement Rotor Rings
$680.00
Girodisc Hyundai N 314mm Rear Replacement Rotor Rings
The Girodisc D2-217 Rear Replacement Rotor Rings are precision-built replacements for Girodisc two-piece rear rotors on Hyundai’s high-performance N models, including the Veloster N, Elantra N, Kona N, and i30 N. These 314mm iron rings are designed to restore braking performance, cooling efficiency, and reliability while maintaining the lightweight and serviceable design of your Girodisc system.
Precision Replacement for Hyundai N Performance Applications
Each Girodisc D2-217 replacement ring is manufactured in the USA from Girodisc’s proprietary cast iron alloy, optimized for heat resistance, durability, and consistent braking feel. The curved vane internal design acts as a centrifugal air pump, pulling cooling air through the rotor to reduce fade and warping during aggressive driving or track use. Sold as a matched pair, the kit includes all new hardware and installs directly onto your existing Girodisc aluminum hats.
Features
• Size: 314mm x 20mm (D2-217 configuration)• Direct replacement rings for Girodisc Hyundai N rear rotors• Proprietary cast iron alloy poured and machined in the USA• Curved vane internal geometry for superior cooling• Includes full hardware kit for installation• Reuses Girodisc aluminum hats• Maintains OEM brake bias and ABS calibration• Sold/priced per pair• Not compatible with OEM or other aftermarket hats
Vehicle Fitment
• Hyundai Veloster N – Rear• Hyundai Elantra N – Rear• Hyundai Kona N – Rear• Hyundai i30 N – Rear• Designed for Girodisc two-piece rotor systems• Will not fit OEM or non-Girodisc hats
Girodisc D2-217 Rear Replacement Rotor Rings FAQs
Can I reuse my existing Girodisc aluminum hats? Yes. These replacement rings bolt directly to your Girodisc aluminum hats using the supplied hardware.
Are these compatible with OEM rotors? No. Girodisc replacement rings are designed exclusively for Girodisc two-piece rotor systems and will not fit OEM or other aftermarket hats.
What’s included in the kit? Two iron rotor rings (left and right) and a full hardware set for reassembly, including bolts, washers, and drive pins.
Are the rotors directional? Yes. Each rotor features directional curved vanes to ensure optimal cooling and airflow during rotation—install the left and right rings accordingly.
Do these improve performance over OEM rotors? Absolutely. Girodisc systems reduce unsprung weight, improve heat dissipation, and deliver more consistent braking response compared to factory rotors.
Are they sold individually or as a pair? The Girodisc D2-217 Hyundai N 314mm Rear Replacement Rotor Rings are sold and priced per pair and include all necessary hardware for installation.
Maintain your Hyundai N’s braking performance with Girodisc D2-217 Rear Replacement Rotor Rings—engineered in the USA for superior cooling, endurance, and precision stopping power lap after lap.
GiroDisc Racing Brakes & Technologies
D2-204 Girodisc Kia Stinger GT, Genesis G70 Rear Replacement Rings
$680.00
Girodisc Kia Stinger GT, Genesis G70 Rear Replacement Rings
Maintain the exceptional braking performance of your Kia Stinger GT or Genesis G70 with Girodisc D2-204 rear replacement rings. These 350mm rotor rings are precision-engineered to restore stopping power, reduce fade, and ensure consistent braking performance under both spirited street driving and track-day conditions.
Vehicle Fitment
Compatible with:• 2018–2025 Kia Stinger GT (3.3T models with Brembo brakes)• 2019–2025 Genesis G70 (3.3T models with performance brake package)Note: These are friction rings only. They are designed to bolt directly to your existing Girodisc aluminum hats using the supplied floating hardware kit.
Engineered for Precision, Performance, and Longevity
Each Girodisc ring is crafted from a proprietary high-carbon iron alloy, cast and machined entirely in the USA. The curved directional vanes act as centrifugal pumps, channeling cooling air through the disc to control temperatures during heavy braking. Whether you’re daily driving or lapping at the circuit, Girodisc replacement rings deliver quiet operation, reduced wear, and consistent braking confidence.
Features
• Direct replacements for Girodisc 350mm rear rotors• Compatible with Kia Stinger GT and Genesis G70 3.3T models• Proprietary high-carbon iron for superior thermal stability• Curved directional vanes enhance airflow and cooling• Fully machined, balanced, and finished in the USA• Includes new floating hardware kit• Sold/priced per pair
Specifications
• Diameter: 350mm• Position: Rear• Material: High-carbon cast iron• Includes: Two rotor rings and complete hardware kit• Made in the USA• Sold/priced per pair
Girodisc D2-204 Replacement Ring FAQs
Do these fit factory rotors? No. These rings are designed only for Girodisc two-piece rotor assemblies and will not fit OEM Kia or Genesis rotors.
Are these suitable for track use? Yes. Girodisc replacement rings are engineered for both street and motorsport applications, providing stable performance at high temperatures.
Do they include all necessary hardware? Yes. Every set comes with new floating drive pins, washers, and bolts for reassembly.
When should I replace the rings? Replace when the rotors reach minimum thickness or show cracks extending to the outer edge.
Keep your high-performance Kia or Genesis braking sharp and consistent with Girodisc D2-204 rear replacement rings — proudly made in the USA for drivers who demand precision and reliability.
GiroDisc Racing Brakes & Technologies
GD328.28.54 Girodisc 328x28mm Replacement Rings
$680.00
Girodisc 328x28mm Replacement Rings (D54)
Need new rings for your Brembo or StopTech big brake kit? Girodisc has you covered. These 328x28mm replacement rings are 100% plug-and-play with your existing hats, offering factory-fit compatibility, superior cooling, and precise braking performance. Each kit includes new floating pin hardware, so installation is seamless and secure.
Vehicle Fitment
These replacement rings fit Girodisc, Brembo, and StopTech two-piece rotor systems utilizing 328x28mm discs. Ideal for performance and track-focused vehicles that need consistent braking performance and rebuildable rotor assemblies.Note: These are friction rings only and install onto existing aluminum hats using the included hardware.
Precision-Built for Performance
The disc is made from Girodisc’s proprietary cast iron alloy, poured in the USA and machined in-house to exacting tolerances. Each rotor uses 48 curved directional vanes designed to function as a centrifugal pump, drawing air through the rotor to keep temperatures stable under high-stress braking. This engineering ensures exceptional fade resistance, consistent pedal feel, and extended rotor life — perfect for both street and circuit use.
Features
• Direct replacement for Girodisc, Brembo, and StopTech 328x28mm applications• Includes new floating hardware kit (two sets)• High-carbon iron alloy for strength and crack resistance• 48 curved vanes for efficient heat evacuation• Machined and balanced in the USA• Bolt-on fitment with existing aluminum hats• Sold/priced per pair
Specifications
• Application: 328x28mm two-piece rotor systems (D54)• Material: Proprietary high-carbon cast iron• Vane count: 48 curved directional• Includes: Two rotor rings and two hardware kits• Made in the USA• Sold/priced per pair
Girodisc GD328.28.54 Replacement Ring FAQs
Will these fit my Brembo or StopTech big brake kit? Yes — these are designed to bolt directly to existing 328x28mm hats for both Brembo and StopTech systems using the D54 configuration.
Do the replacement rings include hardware? Yes. Each pair ships with two complete hardware kits for installation, including new floating pins, washers, and bolts.
Do I need to buy new hats? Not unless your existing hats are damaged. Girodisc rings are made to reuse your original hats for cost-effective rebuilds.
Can these be used for racing? Absolutely. Girodisc’s metallurgy and vane design are track-proven for endurance and sprint racing, providing stable, fade-resistant performance.
Rebuild your Brembo or StopTech big brake kit the right way with Girodisc GD328.28.54 328x28mm replacement rings — precision, performance, and value engineered for serious braking.
GiroDisc Racing Brakes & Technologies
D1-012 Girodisc BMW E46 M3 Front Replacement Rings (345×28 mm)
$680.00
D1-012 Girodisc BMW E46 M3 Front Replacement Rings (345×28 mm)
Rings only, sold as a pair with new hardware. Reuse your existing Girodisc aluminum hats. These rings are designed exclusively for Girodisc hats and will not fit OE or other aftermarket hats.
Vehicle Fitment
BMW E46 M3 (ZCP/Competition Package) – Front
BMW E46 M3 CSL – Front
Serviceable Two-Piece Design
High-carbon iron rings with 48 curved vanes move air efficiently to control temperatures. New drive pins, clips, and Belleville washers restore proper float and clamp force when refreshing your rotors.
Dimensions
Diameter: 345 mm
Thickness: 28 mm
Weight: ~17.5 lb per rotor assembly (complete A1-012)
Features
Replacement rings only; includes hardware
Direct fit for Girodisc A1-012 front rotor assemblies
High-carbon iron; USA-poured and machined
Sold/priced per pair
D1-012 FAQs
Minimum thickness? Replace at 26 mm, or sooner if a crack reaches the ring’s edge.
Caliper compatibility? Works with OEM ZCP/CSL calipers and popular swaps such as Brembo 996 and Megane RS when paired with the correct hats/brackets.
GiroDisc Racing Brakes & Technologies
D1-309 Girodisc Audi with Brembo 18Z Front Replacement Rings
$680.00
Girodisc Audi with Brembo 18Z Front Replacement Rings
D1-309 are rings only, sold in pairs with new hardware. Reuse your existing Girodisc aluminum hats. These rings are engineered exclusively for Girodisc hats and are not compatible with OE or other aftermarket hats.
Vehicle Fitment
Audi S4 (B5) – Front, with Brembo 18Z caliper conversion (for A1-309 kits)
Audi A6 (C5) 2.7T – Front, with Brembo 18Z caliper conversion (for A1-309 kits)
Audi Allroad (C5) 2.7T – Front, with Brembo 18Z caliper conversion (for A1-309 kits)
Fitment note: These replacement rings are for Girodisc hats only.
Cost-Effective Service
High-carbon iron rings with curved vanes maintain cooling performance and thermal stability under repeated stops. New drive pins, clips, and Belleville washers restore the floating interface and clamp force.
Features
Replacement rings only; includes fresh hardware
Direct fit for Girodisc A1-309 front rotor kits
High-carbon iron; USA-poured and machined
Curved vane internal design for airflow
Sold/priced per pair
D1-309 FAQs
When should rings be replaced? At Girodisc’s service thickness or if a crack propagates to the outer edge.
Do I need to re-bed pads? Yes — perform a proper bed-in after ring replacement.
Torque specs? Use the torque/sequence included with the ring hardware kit.
GiroDisc Racing Brakes & Technologies
D2-044 Girodisc Mercedes A45, CLA45, GLA45 Rear Replacement Rings
$680.00
Girodisc Mercedes A45, CLA45, GLA45 Rear Replacement Rings
Maintain top-tier braking performance in your AMG with Girodisc rear replacement rings for the Mercedes A45, CLA45, and GLA45. These precision-engineered high-carbon iron rings are direct replacements for your existing Girodisc two-piece rotor assemblies, restoring factory fit and race-level stopping confidence.
Vehicle Fitment
Compatible with:• Mercedes-AMG A45 (All Years)• Mercedes-AMG CLA45 (All Years)• Mercedes-AMG GLA45 (All Years)Note: These are replacement friction rings only, designed to bolt directly to existing Girodisc aluminum hats using the included hardware kit.
Performance-Driven Design
Each Girodisc ring is crafted from proprietary high-carbon cast iron for exceptional durability, heat control, and resistance to cracking under heavy braking. The directional curved vane design acts as an internal pump to pull air through the disc, reducing brake fade and maintaining consistent pedal feel. Machined and finished entirely in the USA, Girodisc replacement rings ensure long service life and repeatable braking performance for high-output AMG models.
Features
• Direct replacement for Girodisc rear rotor assemblies on AMG A45, CLA45, and GLA45• Proprietary high-carbon cast iron delivers superior heat dissipation• Directional vane design maximizes airflow and cooling• Includes complete hardware kit for installation• Designed for use with Girodisc aluminum hats only• Made in the USA• Sold/priced per pair
Specifications
• Application: Rear axle• Vehicles: Mercedes-AMG A45, CLA45, GLA45• Material: High-carbon cast iron• Includes new hardware• Made in the USA• Sold/priced per pair
Girodisc D2-044 Replacement Ring FAQs
Are these compatible with OEM Mercedes brake hats? No. These rings are designed exclusively for Girodisc aluminum hats and will not fit OEM assemblies.
Do these include new hardware? Yes. Every set includes new drive pins, bolts, and washers for proper installation and long-term reliability.
Can these be used with performance brake pads? Absolutely. Girodisc rings perform best when paired with high-performance street or track compounds such as Pagid, Ferodo, or Endless.
How do these improve braking over stock rotors? The two-piece design reduces unsprung mass and improves heat transfer, giving you better pedal modulation and quicker cooling after repeated hard stops.
Equip your AMG A45, CLA45, or GLA45 with Girodisc D2-044 replacement rings for consistent, fade-free braking under the most demanding street or track conditions.
GiroDisc Racing Brakes & Technologies
D1-171 Girodisc Replacement Front Rotor Rings
$680.00
D1-171 Girodisc Front Rotor Ring Replacement Kit
REPLACEMENT ROTOR RINGS ONLY. INCLUDES NEW INSTALLATION HARDWARE. DOES NOT INCLUDE ALUMINUM HATS.
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.
These Girodisc replacement rotor rings are direct replacements for the iron discs on your Girodisc two-piece rotors, and no modifications are necessary. New cap screws and washers are included with these replacement rotors. We do not recommend re-using the old hardware.
The replacement rotor rings and hat mount together through a floating mount system which utilizes 8-10 high strength alloy steel drive pins manufactured by Girodisc in the USA to their own specifications and are cadmium plated for corrosion resistance. The alloy drive pins transfer the load from braking while maintaining the axial and radial float between the disc rotor and hat. The pins are secured by grade 12 cap screws with hardened washers and mounted with anti-noise spring washers to allow for heat expansion while eliminating the rattle and noise associated with floating rotors.
The two-piece Girodisc design allows for rotor ring-only replacement to minimize replacement costs and deliver outstanding performance and cooling.
Sold/priced per pair.
GiroDisc Racing Brakes & Technologies
D1-130 Girodisc Audi B8 S4/S5 Front Replacement Rings
$680.00
D1-130 Girodisc Audi B8 S4, S5 Front Replacement Rings
Enhance your Audi S4 or S5’s braking performance with Girodisc D1-130 345mm front replacement rings. These precision-machined rings bolt directly to your existing Girodisc aluminum hats using the supplied floating hardware kit. Each ring is crafted from Girodisc’s proprietary high-carbon cast iron, delivering improved cooling, reduced fade, and exceptional pedal consistency during high-performance street or track use.
Vehicle Fitment
Compatible with:• Audi S4 (B8/B8.5, 2010–2016)• Audi S5 Coupe & Cabriolet (B8/B8.5, 2008–2017)• Audi SQ5 (2014–2017)Note: Designed exclusively for Girodisc 345mm two-piece front rotor systems. Not compatible with OEM one-piece or carbon-ceramic rotors.
Features
• Sold as a left/right pair with complete floating hardware kit• Direct replacements for Girodisc 345mm two-piece front rotors• CNC-machined from high-carbon iron alloy for maximum strength and heat resistance• Directional curved vanes promote airflow and enhance heat dissipation• Maintains factory brake bias, ABS, and ESC calibration• Balanced and inspected to eliminate vibration• Designed exclusively for Girodisc aluminum hats
Specifications
• Diameter: 345 mm• Position: Front• Material: High-carbon cast iron• Mount type: Floating two-piece system• Includes: Two rotor rings and hardware kit• Sold/priced per pair
Girodisc D1-130 Audi B8 S4/S5 Front Ring FAQs
Can I use these rings with the OEM Audi rotor hats? No. These rings are only compatible with Girodisc aluminum hats and cannot mount to factory one-piece or ceramic setups.
Which pad compounds are recommended? For street and light track use, Ferodo DS2500 are ideal. For aggressive track applications, use Pagid RS29 for consistent high-temperature performance.
Are these rotors directional? Yes. Each rotor is clearly marked for left or right installation, ensuring the curved vanes channel air correctly through the disc for optimal cooling.
What torque specification should I use on the hardware? Tighten all hardware bolts to 12 ft-lbs (16 Nm) using blue Loctite, and recheck torque after one full heat cycle or track session.
Upgrade your Audi’s braking system with Girodisc D1-130 345mm front replacement rings — engineered for precision cooling, superior modulation, and performance that endures lap after lap.
GiroDisc Racing Brakes & Technologies
D2-100 Girodisc Audi B7 RS4 Rear Replacement Rings
$680.00
Girodisc Audi B7 RS4 Rear Rings
Refresh your Audi B7 RS4’s braking system with Girodisc D2-100 324mm rear replacement rings. These direct-fit rings are engineered to bolt directly onto your existing Girodisc aluminum hats, allowing you to replace only the wear surface instead of the full rotor assembly. Each kit includes both left and right rings along with all new floating hardware for an easy, complete installation.
Vehicle Fitment
Compatible with:• Audi B7 RS4 (2007–2008, rear)Note: Designed for Girodisc 324mm two-piece rear rotor systems. Not compatible with OEM or carbon-ceramic rotors.
Features
• Sold as a left/right pair with new floating hardware kit• Direct replacements for Girodisc 324mm two-piece rear rotors• High-carbon cast iron construction improves heat management and durability• Curved directional vanes enhance airflow and reduce fade• Maintains OEM brake bias and ABS calibration• Designed exclusively for Girodisc aluminum hats – not compatible with OEM or other brands
Specifications
• Diameter: 324mm• Position: Rear• Material: High-carbon cast iron• Mount type: Floating two-piece system• Includes: Two rings and hardware kit• Sold/priced per pair
Girodisc D2-100 Audi RS4 Rear Replacement Ring FAQs
Do these rings work with the factory Audi RS4 brake pads? Yes, the Girodisc D2-100 rings are fully compatible with factory RS4 pad compounds as well as popular track options from Pagid, Ferodo, and Hawk.
How should I bed the new Girodisc rings after installation? Perform 8–10 moderate stops from 60 mph to 10 mph, allowing the brakes to cool between runs. This evenly transfers pad material and prevents uneven deposits.
Are these rings suitable for track use? Absolutely. The high-carbon alloy and floating design provide consistent performance under repeated high-temperature braking.
Can these rotors be resurfaced or turned? No. Due to the directional vane design and strict tolerances, resurfacing is not recommended — replacement rings are the correct service method.
Upgrade your Audi B7 RS4 braking system with Girodisc D2-100 324mm rear replacement rings — precision-engineered for cooling, durability, and consistent braking performance on street or track.
GiroDisc Racing Brakes & Technologies
GD332.32.52 Girodisc Replacement Brake Rotors (Brembo-Stoptech)
$680.00
FITS: BREMBO / STOPTECH 332x32mm BIG BRAKE KITS
REPLACEMENT ROTOR DISCS ONLY, DOES NOT INCLUDE ALUMINUM HAT.
Competition Motorsport is an Authorized dealer for GiroDisc products and we are one of the largest stocking dealers in the country. We ship most products same or next business day to ensure we meet your delivery deadline.
The GiroDisc replacement rotor system is a direct rotor disc replacement for the GiroDisc 2-piece hat and rotor and no modifications are necessary.
The rotor and hat mount together through a floating mount system which utilizes 8-10 high strength alloy steel drive pins manufactured by GiroDisc in the USA to our own specifications and are cadmium plated for corrosion resistance. The alloy drive pins transfer the load from the brake action while maintaining the axial and radial float between the disc rotor and hat. The pins are secured by grade 12 cap screws with hardened washers and mounted with anti-noise spring washers to allow for heat expansion while eliminating the rattle and noise associated with floating rotors.
The 2-piece GiroDisc design allows for rotor only replacement to minimize replacement costs and deliver outstanding performance and cooling.
Sold/Priced per pair.
GiroDisc Racing Brakes & Technologies
D1-117 Girodisc Corvette C6 Z06, Grand Sport Front Replacement Rings
$680.00
D1-117 Girodisc Corvette C6 Z06, Grand Sport Front Replacement Rings
Renew your Corvette’s braking performance with Girodisc D1-117 355mm front replacement rings. These rings are designed to bolt directly to existing Girodisc aluminum hats using the supplied floating hardware kit. Crafted from Girodisc’s proprietary high-carbon cast iron alloy, they deliver outstanding thermal management, consistent bite, and fade-free braking under extreme heat, making them the perfect upgrade for both track-day drivers and daily enthusiasts.
Vehicle Fitment
Compatible with:• Chevrolet Corvette C6 Z06 (2006–2013)• Chevrolet Corvette C6 Grand Sport (2010–2013)Note: Designed exclusively for Girodisc 355mm two-piece front rotor systems. Not compatible with OEM one-piece or carbon-ceramic rotors.
Features
• Sold as a left/right pair with complete floating hardware kit• Direct replacements for Girodisc 355mm two-piece front rotors• CNC-machined from high-carbon cast iron for superior thermal control• Directional curved vanes optimize cooling and airflow during repeated hard stops• Maintains OEM brake balance, ABS, and traction control calibration• Precision-balanced for smooth, vibration-free braking• Designed exclusively for Girodisc aluminum hats
Specifications
• Diameter: 355 mm• Position: Front• Material: High-carbon cast iron• Mount type: Floating two-piece system• Includes: Two rotor rings and full hardware kit• Sold/priced per pair
Girodisc D1-117 Corvette C6 Z06, Grand Sport Front Replacement Ring FAQs
Do these fit OEM Corvette rotor hats? No. The D1-117 rings are designed only for Girodisc aluminum hats and cannot mount to OEM one-piece or carbon-ceramic assemblies.
Which brake pads are best for these rotors? For street performance, use Ferodo DS2500 or Hawk HPS 5.0. For track driving, Pagid RS29 or Hawk DTC-70 deliver excellent high-temperature stability and modulation.
Do I need to bed the rotors before track use? Yes. Perform 8–10 medium-pressure stops from 60 mph to evenly transfer pad material to the rotor, then allow the brakes to cool before full use.
Are these rotors directional? Yes. Each ring is marked for left and right installation. Proper orientation ensures correct airflow through the internal vanes for maximum cooling.
Upgrade your Corvette’s stopping power with Girodisc D1-117 355mm front replacement rings — engineered for precision, endurance, and race-proven heat control on street or track.
