GiroDisc Racing Brakes & Technologies
D1-159 Girodisc McLaren 394mm Front Replacement Rings
$1,504.00
D1-159 Girodisc McLaren 394mm Front Replacement Rings
Renew your McLaren’s braking performance with Girodisc D1-159 394mm front replacement rings. These precision-engineered components bolt directly to your existing Girodisc aluminum hats using the supplied floating hardware kit. Each ring is machined from Girodisc’s proprietary high-carbon cast iron for superior thermal control, balanced response, and fade-free braking under extreme track conditions.
Vehicle Fitment
Compatible with:• McLaren 540C / 570S / 570GT / 600LT (Front)• McLaren 650S / 675LT (Front)• McLaren MP4-12C (Front)Note: Designed for Girodisc 394mm two-piece front rotor systems. Not compatible with OEM carbon-ceramic rotors or one-piece iron discs.
Features
• Sold as a left/right pair with complete floating hardware kit• Direct replacements for Girodisc 394mm two-piece front rotors• CNC-machined from high-carbon cast iron for durability and high-temperature stability• Directional curved vanes accelerate airflow for maximum cooling efficiency• Maintains factory brake bias, ABS, and stability control calibration• Precision-balanced for smooth, vibration-free operation• Designed exclusively for Girodisc aluminum hats used in McLaren iron-conversion systems
Specifications
• Diameter: 394 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 D1-159 McLaren 394mm Front Replacement Ring FAQs
Can I use these with McLaren’s OEM carbon-ceramic rotors? No. These are for Girodisc steel rotor conversions only and will not fit OEM ceramic brake hardware.
What pad compounds are best suited for these rotors? For street/track mix, Pagid RS29 or Ferodo DS2500 pads are excellent. For full track duty, Pagid RSL1 or Endless ME20 are ideal high-temp options.
Are these rotors directional? Yes. Each rotor is marked for left and right orientation to ensure the curved vanes channel airflow correctly through the disc for optimal cooling.
What’s the service life of these rotors under track use? Typically 20–30 hours of hard circuit time depending on track layout, pad compound, and cooling efficiency. Street-driven cars often exceed 40,000 miles.
Upgrade your McLaren’s braking precision with Girodisc D1-159 394mm front replacement rings — race-bred components engineered for stability, cooling, and performance at any speed.
GiroDisc Racing Brakes & Technologies
D1-162 Girodisc Ford Shelby GT350 Front Replacement Rings
$1,261.00
Girodisc Ford Shelby GT350 Front Rings
Maintain peak braking performance in your GT350 or GT350R with Girodisc D1-162 394mm front replacement rings. These high-performance rings bolt directly to your existing Girodisc aluminum hats using the included floating hardware kit. Machined from Girodisc’s proprietary high-carbon cast iron, they deliver superior heat dissipation, reduced unsprung weight, and consistent braking power under the extreme temperatures of track use.
Vehicle Fitment
Compatible with:• Ford Mustang Shelby GT350 (2016–2020)• Ford Mustang Shelby GT350R (2016–2020)Note: Designed exclusively for Girodisc 394mm 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 394mm two-piece front rotors• CNC-machined from high-carbon cast iron for maximum strength and heat resistance• Directional curved vanes increase airflow and cooling• Maintains OEM brake bias and ABS calibration• Precision-balanced to eliminate vibration and ensure smooth braking• Designed exclusively for Girodisc aluminum hats
Specifications
• Diameter: 394 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 D1-162 Ford Shelby GT350 Front Replacement Ring FAQs
Do these work with OEM GT350 hats? No. The Girodisc D1-162 rings are designed to bolt only to Girodisc aluminum hats. OEM one-piece or carbon-ceramic systems are not compatible.
What pad compounds pair best with these rotors? For mixed street/track driving, Ferodo DS2500 or Hawk HPS 5.0 are excellent choices. For full track use, Girodisc recommends Pagid RSL 1 or Carbotech XP12 compounds.
What torque should I use for the hardware bolts? Torque each bolt to 12 ft-lbs (16 Nm) with blue Loctite, and recheck after the first full heat cycle.
Are these rotors directional? Yes. Each rotor is marked for left and right use. Installing them correctly ensures proper airflow through the curved cooling vanes for maximum heat dissipation.
Upgrade your GT350’s braking confidence with Girodisc D1-162 394mm front replacement rings — engineered for precision, strength, and endurance on street or circuit.
GiroDisc Racing Brakes & Technologies
D1-163 Girodisc 390x34mm Front Replacement Rings
$1,476.00
Girodisc 390x34mm Front Rings
Service your performance braking system with Girodisc D1-163 390x34mm front replacement rings. These precision-machined components 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 alloy to ensure exceptional heat dissipation, consistent friction characteristics, and long-term reliability under heavy braking loads.
Vehicle Fitment
Compatible with:• Custom and motorsport applications using Girodisc 390x34mm two-piece front rotors• Commonly fitted to upgraded systems on Porsche, BMW, and Audi track platforms using large six-piston calipersNote: Designed exclusively for Girodisc 390x34mm two-piece front rotor systems. Verify hat bolt pattern and offset before installation.
Features
• Sold as a left/right pair with complete floating hardware kit• Direct replacements for Girodisc 390x34mm two-piece front rotors• CNC-machined from high-carbon cast iron for optimal thermal stability• Directional curved vanes channel airflow for maximum cooling• Maintains proper brake bias and ABS calibration• Precision-balanced to prevent vibration or pulsation• Designed exclusively for Girodisc aluminum hats
Specifications
• Diameter: 390 mm• Thickness: 34 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 D1-163 Front Replacement Ring FAQs
What cars typically use this 390x34mm rotor size? This ring size is common on large six-piston BBK setups from Brembo, AP Racing, and StopTech used on Porsche 991, BMW F8X, and Audi RS applications when fitted with Girodisc hats.
Can these be installed on non-Girodisc hats? No. The mounting pattern and float hardware are specific to Girodisc aluminum hats. Using other hats may cause clearance or balance issues.
What torque should I apply to the floating hardware? Torque each bolt to 12 ft-lbs (16 Nm) with blue Loctite. Recheck after the first heat cycle to ensure hardware seating.
How do I know when it’s time to replace the rings? Replace when rotor thickness reaches the minimum spec or if radial cracking extends beyond 70% of the face slot length — whichever occurs first.
Girodisc D1-163 390x34mm front replacement rings deliver precision, durability, and race-proven performance for drivers demanding the highest level of stopping power and thermal control.
GiroDisc Racing Brakes & Technologies
D1-168 Girodisc Lamborghini Gallardo Super Trofeo Front Replacement Rings
$1,719.00
Girodisc Lamborghini Gallardo Super Trofeo Front Replacement Rings
Maintain the world-class stopping power of your Gallardo Super Trofeo with Girodisc D1-168 380mm front replacement rings. Designed as direct replacements for the Girodisc two-piece racing rotor system, these rings bolt directly to your existing Girodisc aluminum hats using the supplied floating hardware kit. Precision-machined from high-carbon cast iron, they deliver consistent braking torque, improved thermal stability, and unmatched fade resistance through repeated high-G deceleration.
Vehicle Fitment
Compatible with:• Lamborghini Gallardo LP570-4 Super Trofeo (2009–2013)• Lamborghini Gallardo LP560-4 and LP550 models with Super Trofeo braking upgrades• Reiter Engineering Gallardo GT3 and GT3 FL2Note: Designed exclusively for Girodisc 380mm two-piece front rotor systems. Not compatible with OEM carbon-ceramic or one-piece rotors.
Features
• Sold as a left/right pair with complete floating hardware kit• Direct replacements for Girodisc 380mm two-piece front rotors• High-carbon cast-iron construction ensures stability and fade resistance at race temperatures• Directional curved vanes maximize airflow and cooling efficiency• Precision-machined and balanced in the USA• Maintains OEM brake bias and pedal feel• Designed exclusively for Girodisc aluminum hats used in Super Trofeo systems
Specifications
• Diameter: 380 mm• Thickness: 34 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 D1-168 Lamborghini Front Ring FAQs
Can these rotors be used with OEM carbon-ceramic systems? No. The D1-168 rings are designed for Girodisc steel rotor conversions and will not fit OEM carbon-ceramic hardware.
What pad compounds are recommended for track use? Pagid RS29, Ferodo DS3.12, or Endless ME20 are ideal for maintaining consistent friction under race conditions.
Do these require any special bedding-in procedure? Yes. Use Girodisc’s recommended procedure — 8–10 moderate stops from 60 mph to evenly transfer pad material, followed by full cooldown before track use.
What’s the expected service life for endurance racing? Under typical Super Trofeo race conditions, these rings can deliver 20–30 hours of track use before inspection or replacement, depending on pad aggressiveness and cooling setup.
Refresh your Gallardo Super Trofeo’s braking confidence with Girodisc D1-168 380mm front replacement rings — engineered for durability, balance, and fade-free performance in the world’s most demanding racing environments.
GiroDisc Racing Brakes & Technologies
D1-169 Girodisc Ford Focus RS Front Replacement Rings
$1,118.00
D1-169 Girodisc Ford Focus RS Front Rings
Revive the braking performance of your Focus RS with Girodisc D1-169 350mm front replacement rings. Designed as direct replacements for Girodisc two-piece rotors, these precision-machined rings bolt directly to your existing aluminum hats using the supplied floating hardware kit. Each ring is crafted from Girodisc’s proprietary high-carbon iron alloy, offering superior heat resistance, fade-free stopping power, and consistent pedal feel even during repeated hard braking.
Vehicle Fitment
Compatible with:• Ford Focus RS (MK3, 2016–2018)• Focus RS equipped with Brembo 4-piston front calipersNote: Designed exclusively for Girodisc 350mm 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 350mm two-piece front rotors• CNC-machined from high-carbon cast iron for maximum strength and heat control• Directional curved vanes promote efficient air cooling through the disc• Maintains OEM brake bias, ABS, and ESC performance• Precision-balanced for vibration-free braking• Designed exclusively for Girodisc aluminum hats
Specifications
• Diameter: 350 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 D1-169 Ford Focus RS Front Ring FAQs
Do these fit the factory Focus RS rotors or hats? No. These are designed specifically for Girodisc aluminum hats and will not fit the OEM Brembo one-piece setup.
What pad compounds pair best with these rotors? For mixed use, Ferodo DS2500 or Hawk HPS 5.0 pads work best. For track, use DS1.11 or Carbotech XP10 for optimal bite and temperature range.
What torque should I use for the floating hardware bolts? Tighten to 12 ft-lbs (16 Nm) with blue Loctite. Recheck torque after the first heat cycle for best reliability.
Are these rotors directional? Yes. Each rotor is marked for left or right use — follow the engraved rotation arrow to ensure correct vane airflow during installation.
Upgrade your Focus RS braking system with Girodisc D1-169 350mm front replacement rings — engineered for balance, cooling, and repeatable high-performance stopping power.
GiroDisc Racing Brakes & Technologies
D1-171 Girodisc Replacement Front Rotor Rings
$974.00
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
D1-174 Girodisc Acura NSX Front Replacement Rings
$1,476.00
Girodisc Acura NSX Front Replacement Rings
Bring your Acura NSX braking system back to peak performance with Girodisc 370mm front replacement rings. Designed as direct replacements for existing Girodisc two-piece rotor assemblies, these high-carbon iron rings deliver the heat control, balance, and precision stopping power the NSX platform demands.
Vehicle Fitment
Compatible with:• 2017–2022 Acura NSX (NC1)• 1991–2005 Acura NSX (with Girodisc or comparable 370mm big brake kit)Note: These are friction rings only. They attach directly to existing Girodisc aluminum hats using the supplied hardware kit.
Engineered for Performance and Longevity
Each Girodisc replacement ring is made from a proprietary high-carbon cast iron alloy, developed to handle the extreme heat and stress of performance driving. Precision-machined and balanced in the USA, these rings feature a curved vane internal design that acts as a centrifugal air pump, drawing air through the rotor to maintain consistent cooling under high-speed braking. Whether you’re on canyon roads or the track, Girodisc ensures consistent pedal feel and fade-free braking.
Features
• Direct replacement for 370mm Girodisc front rotor assemblies• Designed for Acura NSX (NC1) and earlier models with Girodisc big brake kits• High-carbon iron construction for thermal stability and durability• Curved directional vanes improve airflow and cooling• Machined, balanced, and finished in the USA• Includes new floating hardware kit• Sold/priced per pair
Specifications
• Diameter: 370mm• Position: Front• Material: High-carbon cast iron• Includes: Two rotor rings and full hardware kit• Made in the USA• Sold/priced per pair
Girodisc D1-174 Replacement Ring FAQs
Are these compatible with OEM NSX rotors? No. These replacement rings are designed specifically for Girodisc two-piece rotor systems or equivalent aluminum-hat setups.
Do they include hardware? Yes. Each pair ships with a complete hardware kit including floating pins, washers, and bolts.
Will these work on both first- and second-generation NSX models? They fit directly on the second-gen NSX (NC1) and first-gen models equipped with Girodisc 370mm rotor systems or compatible hats.
Are these suitable for track driving? Absolutely. Girodisc rotors are built for high-performance and endurance use, maintaining stable braking through repeated high-heat cycles.
Restore the legendary stopping power of your NSX with Girodisc D1-174 370mm front replacement rings — precision-engineered, American-made, and built for uncompromising performance.
GiroDisc Racing Brakes & Technologies
D1-179 Girodisc Audi 370x34mm Front Replacement Rings
$1,261.00
D1-179 Girodisc Audi Front Rings
Restore peak braking precision in your Audi RS or S model with Girodisc D1-179 370x34mm front replacement rings. These precision-machined components bolt directly to your existing Girodisc aluminum hats using the included floating hardware kit. Constructed from high-carbon cast iron, they offer improved heat management, reduced unsprung weight, and fade-free performance during aggressive street or track use.
Vehicle Fitment
Compatible with:• Audi RS5 (B8/B8.5, 2013–2015)• Audi RS4 (B8, 2013–2015)• Audi S6 / S7 (C7, 2013–2018)• Audi A6 / A7 3.0T with Performance Brake PackageNote: Designed exclusively for Girodisc 370x34mm two-piece front rotor systems. Not compatible with OEM one-piece or carbon-ceramic rotors.
Features
• Sold as a left/right pair with full floating hardware kit• Direct replacements for Girodisc 370x34mm two-piece front rotors• Cast from proprietary high-carbon iron alloy for superior thermal stability• Directional curved vanes channel air for maximum cooling• Maintains OEM brake bias and ABS/ESC function• Dynamically balanced for smooth, vibration-free operation• Designed exclusively for Girodisc aluminum hats
Specifications
• Diameter: 370 mm• Thickness: 34 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 D1-179 Audi 370x34mm Front Ring FAQs
Will these fit OEM Audi rotor hats? No. The D1-179 rings are specifically designed to mount to Girodisc aluminum hats only, not factory or carbon-ceramic hats.
What pad compounds work best with these rotors? They perform excellently with Ferodo DS2500, Pagid RS29, and Hawk HP+ pads, depending on your driving style and heat demands.
Do they require a specific bedding process? Yes. Perform 8–10 medium stops from 60–10 mph to evenly transfer pad material, then cool completely before heavy use.
Are these rotors directional? Yes. Each rotor is marked for left and right sides — follow the arrow cast into the hat mounting area to ensure proper airflow and cooling direction.
Upgrade your Audi’s braking system with Girodisc D1-179 370x34mm front replacement rings — precision-balanced for endurance, consistency, and maximum confidence on the road or at the track.
GiroDisc Racing Brakes & Technologies
D1-183 Girodisc Ferrari 458 / 488 Challenge Front Replacement Rings
$1,504.00
Girodisc Ferrari 458, 488 Challenge Front Replacement Rings
Keep your Ferrari Challenge braking system at peak performance with Girodisc 380mm front replacement rings. These direct-fit iron rings are designed for high-performance racing applications, delivering consistent braking, superior heat management, and the precision feel Ferrari drivers demand on track.
Vehicle Fitment
Compatible with:• Ferrari 458 Challenge• Ferrari 488 Challenge• Ferrari 488 Challenge EvoNote: These are friction rings only. They attach directly to existing Girodisc aluminum hats using the included floating hardware kit.
Race-Bred Performance and Quality
Girodisc front replacement rings are engineered and machined in the USA from a proprietary high-carbon cast iron alloy, formulated for maximum thermal stability and durability. Each rotor uses a curved directional vane design to pull air through the disc during rotation, acting as a centrifugal pump to improve cooling and minimize fade under extreme race conditions. The result is predictable, fade-free braking through every corner — lap after lap.
Features
• Direct replacement for Girodisc 380mm front rotor assemblies• Designed for Ferrari 458, 488, and 488 Challenge Evo race cars• Proprietary high-carbon iron alloy for endurance-grade heat control• Curved directional vanes for maximum airflow and cooling• Machined and balanced in the USA• Includes complete hardware kit• Sold/priced per pair
Specifications
• Diameter: 380mm (approx.)• Position: Front• Material: High-carbon cast iron• Includes: Two replacement rings and new hardware• Made in the USA• Sold/priced per pair
Girodisc D1-183 Replacement Ring FAQs
Are these compatible with OEM carbon-ceramic rotors? No. These are for Girodisc two-piece iron assemblies only and will not fit OEM carbon-ceramic setups.
Do I need new aluminum hats? No. These rings are designed to bolt directly to your existing Girodisc hats using the included hardware.
Do these include new hardware? Yes. Each pair ships with a complete floating hardware kit, including pins, washers, and bolts.
Can these handle extended track use? Absolutely. Girodisc replacement rings are endurance-proven for Ferrari Challenge applications, offering consistent thermal stability and long service life under repeated high loads.
Renew your Ferrari Challenge braking system with Girodisc D1-183 380mm front replacement rings — precision-engineered in the USA for durability, cooling, and world-class performance.
GiroDisc Racing Brakes & Technologies
D1-185 Girodisc Subaru WRX STI (’18+) Front Replacement Rings
$974.00
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
D1-186 Girodisc Replacement Rotors
$1,261.00
Girodisc D1-186 Replacement Rotor Rings (Discs)
Girodisc replacement rotor rings are direct replacements for the iron discs on your Girodisc A1-186 two-piece rotors, with no modifications necessary. New cap screws and washers are included with these replacement rotors. We do not recommend re-using the old hardware.
(This kit is contains two cast-iron discs and associated hardware. No aluminum center hat.)
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 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.
Rotor ring-only replacement helps to minimize costs and deliver outstanding performance.
Sold/priced per pair.
GiroDisc Racing Brakes & Technologies
D1-187 Girodisc Audi 400mm Front Replacement Rings,
$1,261.00
D1-187 Girodisc Audi 400mm Front Replacement Rings
Maintain the incredible stopping power of your Audi RS with Girodisc D1-187 400mm front replacement rings. These precision-machined rings bolt directly to your existing Girodisc aluminum hats using the supplied floating hardware kit. Engineered from high-carbon cast iron, they deliver consistent performance under heat, reduced fade, and improved pedal modulation compared to OEM rotors.
Vehicle Fitment
Compatible with:• Audi RS6 (C7, 2014–2018)• Audi RS7 (C7, 2014–2018)• Audi S8 (D4, 2013–2018)• Audi S6 / S7 Performance Package (C7, optional 400 mm brakes)Note: These fit Girodisc 400 mm two-piece front rotor systems only. 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 400 mm two-piece front rotors• CNC-machined from high-carbon cast iron for stability under repeated high-heat braking• Directional curved vanes force airflow through the rotor for superior cooling• Maintains factory brake bias and ABS calibration• Balanced to within 2 grams for vibration-free performance• Designed exclusively for Girodisc aluminum hats
Specifications
• Diameter: 400 mm• Position: Front• Material: High-carbon cast iron• Mount type: Floating two-piece system• Includes: Two rotor rings and complete hardware kit• Sold/priced per pair
Girodisc D1-187 Audi 400 mm Front Ring FAQs
Can I reuse the OEM Audi rotor hats with these rings? No. The bolt pattern and float hardware differ; these are designed for Girodisc hats only.
What torque specs should I use on the hardware? Tighten the drive bolts to 12 ft-lbs (16 Nm) using blue Loctite, then safety-wire if applicable per Girodisc instructions.
Are these compatible with the RS6/RS7 factory ceramic brake option? No. The D1-187 rings fit the steel rotor conversion or factory iron brake systems only.
Do they work with aftermarket track pads like Pagid RS or Ferodo DS series? Yes. These rotors pair well with all high-friction track compounds and resist heat cracking during repeated heavy stops.
Upgrade your Audi RS or S model with Girodisc D1-187 400 mm front replacement rings — the track-tested, service-friendly solution for maximum cooling and consistent stopping power.
GiroDisc Racing Brakes & Technologies
D1-194 Girodisc BMW F8X Essex/AP Racing BBK Front Replacement Rings
$1,261.00
Girodisc BMW F8X Essex/AP BBK Front Replacement Rings
Restore your BMW M3 or M4’s braking power with Girodisc D1-194 front replacement rings for the Essex/AP Racing big brake kit (A1-194). These 372 mm high-carbon cast-iron rings are direct replacements for the original Girodisc/AP rotor assemblies, designed to bolt onto existing aluminum hats using the included floating hardware kit. Engineered for maximum cooling efficiency and consistent pedal feel, they’re the ideal service solution for track-focused M cars.
Vehicle Fitment
Compatible with:• BMW F80 M3 (Front)• BMW F82 / F83 M4 (Front)• BMW M2 Competition (F87, Front)Note: Designed for the Essex/AP Racing big brake kit using Girodisc A1-194 rotor assemblies. Not compatible with OEM or other aftermarket rotors.
Features
• Sold as a left/right pair with full floating hardware kit• Direct replacements for Girodisc 372 mm AP Racing BBK rotors• CNC-machined from high-carbon cast iron for exceptional thermal stability• Directional curved vanes maximize airflow and heat dissipation• Maintains brake balance and ABS calibration for both street and track setups• Precision-balanced for smooth, vibration-free braking• Designed for Girodisc aluminum hats used in Essex/AP Racing BBK systems
Specifications
• Diameter: 372 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 D1-194 BMW F8X Essex/AP BBK Front Replacement Ring FAQs
Are these rings compatible with OEM M3/M4 rotors? No. They’re designed only for Girodisc aluminum hats used in the Essex/AP Racing big brake kit.
Will these fit the AP Racing CP9660 calipers? Yes. They’re designed for the A1-194 rotor assemblies paired with AP CP9660 front calipers in the Essex/AP BBK.
Can these handle full track use with race pads? Absolutely. The D1-194 rings are engineered for high thermal stress and work flawlessly with aggressive pad compounds.
Do they require new hats or just rings? You can reuse your existing Girodisc hats; these rings bolt directly on using the included hardware kit.
Refresh your BMW M3 or M4’s Essex/AP Racing BBK with Girodisc D1-194 front replacement rings — precision-engineered for cooling, longevity, and race-proven performance on every lap.
GiroDisc Racing Brakes & Technologies
D1-203 Girodisc Porsche 718 / 991.2 / 992.1 Carrera Front Replacement Rings
$1,261.00
Girodisc Porsche 718, 991.2, 992.1 Carrera Front Replacement Rings
Refresh the braking precision of your Porsche Carrera with Girodisc D1-203 350 mm front replacement rings. These precision-engineered rings bolt directly to your existing Girodisc aluminum hats using the included floating hardware kit. Cast from Girodisc’s proprietary high-carbon iron alloy, they deliver enhanced cooling, consistent friction, and fade-free braking in both street and track environments.
Vehicle Fitment
Compatible with:• Porsche 718 Cayman / Boxster S & GTS (Front)• Porsche 991.2 Carrera / Carrera S (Front)• Porsche 992.1 Carrera / Carrera S (Front)Note: Designed exclusively for Girodisc 350 mm two-piece front rotor systems. Not compatible with OEM PCCB or one-piece iron rotors.
Features
• Sold as a left/right pair with complete floating hardware kit• Direct replacements for Girodisc 350 mm two-piece front rotors• CNC-machined from high-carbon cast iron for superior thermal stability• Directional curved vanes enhance airflow and reduce heat buildup• Maintains factory brake bias and ABS calibration• Precision-balanced for vibration-free operation• Designed exclusively for Girodisc aluminum hats – not compatible with OEM or other brands
Specifications
• Diameter: 350 mm• Position: Front• Material: High-carbon cast iron• Mount type: Floating two-piece system• Includes: Two rotor rings and complete hardware kit• Sold/priced per pair
Girodisc D1-203 Porsche 718 / 991.2 / 992.1 Carrera Front Replacement Ring FAQs
Are these compatible with Porsche PCCB carbon-ceramic systems? No. The D1-203 rings are designed for Girodisc steel two-piece systems only and will not fit PCCB setups.
Do they fit both 718 and 992 Carrera models? Yes. They share identical rotor dimensions and fitment when using Girodisc hats designed for each chassis.
How do they compare to OEM rotors in performance? Girodisc rings provide improved cooling efficiency, reduced unsprung weight, and lower replacement cost over OEM options.
Are they quiet enough for street driving? Yes. The floating system is engineered for minimal noise during daily use while maintaining full race-level durability under heat.
Upgrade your Porsche 718, 991.2, or 992.1 Carrera with Girodisc D1-203 350 mm front replacement rings — precision-built for balanced braking, exceptional cooling, and long-term performance on road or track.
GiroDisc Racing Brakes & Technologies
D1-204 Girodisc Kia Stinger GT / Genesis G70 Front Replacement Rings
$974.00
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
D1-206 Girodisc Front Replacement Rotor Rings | McLaren 390mm
$1,504.00
Girodisc D1-206 Front Replacement Rotor Rings
Restore your braking system’s performance with Girodisc D1-206 front replacement rotor rings. These precision-engineered 355mm rotors are direct replacements for existing Girodisc two-piece front rotor assemblies, offering exceptional heat management, balance, and consistency under the toughest driving conditions.
Vehicle Fitment
Compatible with:• Audi B8/B8.5 S4 (2010–2016)• Audi B8/B8.5 S5 (2010–2017)• Audi SQ5 (2014–2017)Note: These are friction rings only. They attach to existing Girodisc aluminum hats using the supplied floating hardware kit.
Engineered for Performance and Reliability
Each Girodisc replacement ring is made from a proprietary high-carbon iron alloy, cast and machined entirely in the USA. The internal curved vane design acts as a centrifugal pump, pulling cooling air through the rotor to minimize heat and fade. This ensures consistent braking performance and long-term durability on both street and track.
Features
• Direct replacement for Girodisc two-piece front rotors• High-carbon cast iron for improved heat dissipation• 355mm diameter for enhanced braking torque and cooling• Directional curved vane design for efficient airflow• Machined, balanced, and assembled in the USA• Includes complete floating hardware kit• Sold/priced per pair
Specifications
• Diameter: 355mm• Position: Front• Material: High-carbon cast iron• Includes: Two rotor rings and new hardware kit• Made in the USA• Sold/priced per pair
Girodisc D1-206 Replacement Ring FAQs
Will these fit OEM Audi rotors? No. These replacement rings are designed for use with Girodisc two-piece rotor systems only.
Do they include new hardware? Yes. Each pair comes with a full hardware kit for secure and simple installation.
Can I install these myself? Installation is straightforward for anyone familiar with brake service. A torque wrench and Loctite are recommended for hardware installation.
Are these suitable for track use? Absolutely. Girodisc rotors are engineered for high-performance driving, maintaining consistent pedal feel through repeated high-heat cycles.
Get the most from your Audi’s braking system with Girodisc D1-206 front replacement rings — precision-engineered, track-proven, and proudly made in the USA.
