GiroDisc Racing Brakes & Technologies
D1-250 Girodisc Porsche GT2 RS Clubsport Front Replacement Rings
$1,627.00
D1-250 Girodisc Porsche GT2 RS Clubsport Front Replacement Rings
Maximize the braking performance of your Porsche GT2 RS Clubsport with Girodisc D1-250 410mm front replacement rings. These precision-engineered rings bolt directly to your existing Girodisc aluminum hats using the included floating hardware kit. Each rotor ring is machined from high-carbon cast iron for superior thermal control, reduced fade, and consistent pedal feel under extreme braking conditions.
Vehicle Fitment
Compatible with:• Porsche 991 GT2 RS Clubsport (front)• Porsche 991 GT2 RS MR (Manthey Racing variant)Note: Designed exclusively for Girodisc 410mm two-piece front rotor systems. Not compatible with OEM or PCCB carbon-ceramic rotors.
Features
• Sold as a left/right pair with complete floating hardware kit• Direct replacements for Girodisc 410mm two-piece front rotors• CNC-machined from proprietary high-carbon cast iron for durability• Directional curved vanes enhance airflow and cooling• Maintains factory brake bias and ABS calibration• Designed exclusively for Girodisc aluminum hats – not compatible with OEM or other brands
Specifications
• Diameter: 410mm• Position: Front• Material: High-carbon cast iron• Mount type: Floating two-piece system• Includes: Two rings and new hardware kit• Sold/priced per pair
Girodisc D1-250 Porsche GT2 RS Clubsport Front Replacement Ring FAQs
Are these compatible with OEM PCCB carbon-ceramic brakes? No. The D1-250 rings are designed for Girodisc two-piece steel rotor conversions only.
Can these handle full race conditions? Absolutely. These rings are engineered for the high thermal loads of GT-class racing and extended endurance events.
Do they fit both GT2 RS and GT2 RS MR models? Yes. The D1-250 fits both standard GT2 RS Clubsport and Manthey Racing variants that share the 410mm front rotor dimensions.
How do these compare to OEM steel rotors? Girodisc rings offer improved heat cycling, reduced weight, and longer lifespan due to the floating two-piece design.
Upgrade your Porsche GT2 RS Clubsport’s braking system with Girodisc D1-250 410mm front replacement rings — built for precision, cooling, and repeatable performance at the highest levels of motorsport.
GiroDisc Racing Brakes & Technologies
D1-260DS Girodisc Mercedes G63 Front Replacement Rings (Dimpled & Slotted)
$1,486.00
Girodisc Mercedes G63 Front Rings
Bring your Mercedes G63 AMG’s braking performance back to peak levels with Girodisc D1-260DS 380mm dimpled and slotted front replacement rings. These precision-engineered rings bolt directly to your existing Girodisc aluminum hats using the included floating hardware kit. The dimpled and slotted design enhances pad bite, improves gas evacuation, and keeps the braking surface clean for consistent stopping power under heavy load.
Vehicle Fitment
Compatible with:• Mercedes-Benz G63 AMG (W463A / W464 chassis, 2013–present)• Mercedes-Benz G63 AMG Edition 1 / G63 AMG 4x4² (steel rotor applications)Note: Designed for Girodisc 380mm 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• Dimpled and slotted design increases pad bite and heat evacuation• Direct replacements for Girodisc 380mm two-piece front rotors• CNC-machined from proprietary high-carbon cast iron for exceptional durability• Directional curved vanes maximize airflow and cooling• Maintains OEM brake bias and ABS calibration• Designed exclusively for Girodisc aluminum hats – not compatible with OEM or other brands
Specifications
• Diameter: 380mm• Position: Front• Material: High-carbon cast iron• Surface: Dimpled and slotted• Mount type: Floating two-piece system• Includes: Two rings and new hardware kit
Girodisc D1-260DS Mercedes G63 Front Ring FAQs
Are these compatible with factory G63 calipers? Yes. They fit perfectly with the OEM AMG multi-piston front calipers when used with Girodisc hats.
What’s the benefit of the dimpled and slotted surface? It improves initial bite, clears gases and debris, and maintains consistent braking in heavy-duty or repeated stop scenarios.
Can these handle the weight and power of a G63? Absolutely. Girodisc rotors are engineered for high thermal mass and cooling capacity to manage the G63’s substantial curb weight and braking demands.
Are they quieter than cross-drilled rotors? Yes. The dimpled and slotted pattern reduces noise and pad wear while maintaining similar cooling performance to cross-drilled designs.
Upgrade your Mercedes G63 AMG with Girodisc D1-260DS 380mm front replacement rings — built for exceptional cooling, strength, and reliability on both road and off-road terrain.
GiroDisc Racing Brakes & Technologies
D1-268 Girodisc Toyota GR Corolla / GR Yaris Front Replacement Rings
$1,104.00
Girodisc Toyota GR Corolla, GR Yaris Front Replacement Rings
Maintain the high-performance braking feel of your Toyota GR Corolla or GR Yaris with Girodisc D1-268 355mm front replacement rings. Designed as direct replacements for Girodisc two-piece rotors, these precision-machined rings bolt directly to your existing Girodisc aluminum hats using the included floating hardware kit. Refresh your rotor surface while retaining your lightweight two-piece design and factory braking balance.
Vehicle Fitment
Compatible with:• Toyota GR Corolla (2023+)• Toyota GR Yaris (2020+)Note: Designed exclusively for Girodisc 355mm two-piece front rotor systems. Not compatible with OEM one-piece rotors or factory carbon-ceramic setups.
Features
• Sold as a left/right pair with full floating hardware kit• Direct replacements for Girodisc 355mm two-piece front rotors• High-carbon cast iron ensures superior heat management• Directional curved vanes increase cooling efficiency• Maintains OEM brake bias and ABS performance• Precision machined and balanced in the USA• Designed exclusively for Girodisc aluminum hats
Specifications
• Diameter: 355mm• Position: Front• Material: High-carbon cast iron• Mount type: Floating two-piece system• Includes: Two rings and new hardware kit• Sold/priced per pair
Girodisc D1-268 Toyota GR Corolla / GR Yaris Front Replacement Ring FAQs
Do these fit factory Toyota rotor hats? No. The D1-268 rings are engineered only for Girodisc aluminum hats and are not compatible with OEM rotors.
Are these suitable for heavy track use? Yes. Girodisc’s floating mount and high-carbon alloy resist cracking and warping under the extreme heat generated during performance driving.
Can I use these with stock GR calipers? Yes. They fit perfectly with the OEM caliper configuration when used with Girodisc hats.
What’s the benefit of replacing just the rings? You save cost by retaining your Girodisc hats while restoring full braking performance and reducing unsprung weight.
Refresh your GR’s stopping power with Girodisc D1-268 355mm front replacement rings — precision-built for thermal control, responsiveness, and consistent braking on both road and circuit.
GiroDisc Racing Brakes & Technologies
D1-272 Girodisc Porsche 992 GT3 Front Replacement Rings
$1,599.00
Girodisc Porsche 992 GT3 Front Replacement Rings
Refresh your Porsche’s braking power with Girodisc D1-272 front replacement rings. Designed as direct replacements for Girodisc two-piece rotors, these precision-engineered 408mm rings restore peak performance and cooling efficiency, ensuring consistent brake feel and reduced fade during aggressive driving or track use.
Vehicle Fitment
Compatible with:• 2022–2025 Porsche 911 GT3 (992)• 2023–2025 Porsche 911 GT3 Touring (992)• 2023–2025 Porsche 718 Cayman GT4 RS• 2023–2025 Porsche 718 Spyder RSNote: These are friction rings only. They attach to existing Girodisc aluminum hats using the supplied floating hardware kit.
Race-Proven Engineering and Cooling Efficiency
Girodisc rotor rings are cast in the USA from a proprietary high-carbon iron alloy designed to withstand extreme heat and repeated high-speed stops. The 72 curved internal vanes act as centrifugal pumps, pulling cool air through the disc to regulate temperature and resist fade. These rings deliver precise pedal modulation and exceptional longevity on both road and track.
Features
• Direct replacements for Girodisc 408mm front rotors• Fits Porsche 992 GT3, GT3 Touring, GT4 RS, and Spyder RS• High-carbon cast iron construction for superior durability• Directional curved vane design for maximum cooling• Fully machined, balanced, and finished in the USA• Includes new floating hardware kit• Sold/priced per pair
Specifications
• Diameter: 408mm• Position: Front• Material: High-carbon cast iron• Includes: Two rotor rings and full hardware kit• Made in the USA• Sold/priced per pair
Girodisc D1-272 Replacement Ring FAQs
Are these compatible with OEM Porsche rotors? No. These replacement rings are designed exclusively for Girodisc two-piece rotor systems and will not fit OEM or PCCB assemblies.
Do they include new hardware? Yes. Each set comes complete with floating drive pins, washers, and bolts for secure, straightforward installation.
Are they suitable for track use? Absolutely. Girodisc rotors are engineered for endurance racing, offering consistent brake feel even under prolonged high temperatures.
When should I replace the rings? Replace them once they reach minimum thickness or if surface cracking extends to the edge of the disc.
Rebuild your Porsche’s braking system with Girodisc D1-272 front replacement rings — precision-built, track-proven, and proudly made in the USA.
GiroDisc Racing Brakes & Technologies
D1-282 Girodisc BMW G8X 380mm Front Replacement Rings
$1,245.00
D1-282 Girodisc BMW G8X Front Replacement Rings
Rings only, sold as a pair with new hardware. Reuse your existing Girodisc aluminum hats. These rings are engineered for Girodisc hats only and will not fit OE or other aftermarket hats.
Vehicle Fitment
BMW G87 M2 – Front (for A1-282 kits)
BMW G80/G81 M3 – Front (for A1-282 kits)
BMW G82/G83 M4 – Front (for A1-282 kits)
Quick Refresh, Track-Ready
High-carbon iron rings with 72 curved vanes move air efficiently. New drive pins, clips, and Belleville washers restore proper float and clamp force for quiet street manners and durability under heat.
Features
Replacement rings only; includes new hardware
Direct fit for Girodisc A1-282 front rotor kits
High-carbon iron; USA-poured and machined
72-vane internal geometry for cooling airflow
Sold/priced per pair
D1-282 FAQs
Minimum thickness? Replace at 34 mm or if any crack reaches the outer edge.
Re-use hardware? No — install the included new hardware and torque per instructions.
Re-bed pads? Yes — perform a standard bedding procedure after ring replacement.
GiroDisc Racing Brakes & Technologies
D1-284 Girodisc Acura TLX Type S Front Replacement Rings
$1,104.00
D1-284 Girodisc Acura TLX Type S Front Replacement Rings
Rings only, sold as a pair with new hardware. Reuse your existing Girodisc aluminum hats. Designed exclusively for Girodisc hats; not compatible with OE or other aftermarket hats.
Vehicle Fitment
Acura TLX Type S (2021+) – Front, for A1‑284 rotor kits
Serviceable Two‑Piece Design
High‑carbon iron rings with curved vanes deliver consistent cooling and durability. New drive pins, clips, and Belleville washers restore proper float and clamping during refresh.
Features
Replacement rings only; hardware included
Direct fit for Girodisc A1‑284 front rotor assemblies
Minimum ring thickness: 28 mm
Sold/priced per pair
GiroDisc Racing Brakes & Technologies
D1-287 Girodisc Porsche 992 GT3 Cup Front Replacement Rings
$1,458.00
Porsche 992 GT3 Cup Front Replacement Rings
Restore world-class braking performance to your Porsche 992 GT3 Cup with the Girodisc D1-287 Front Replacement Rings. Engineered for endurance and precision, these 410x36mm iron rotor rings are direct replacements for Girodisc two-piece front rotors used in competition or iron conversion applications. Built to withstand extreme thermal loads and track punishment, the D1-287 rings deliver consistent, fade-free braking lap after lap.
Each ring is machined from Girodisc’s proprietary U.S.-poured high-carbon cast iron, chosen for its exceptional strength, heat resistance, and stability. Designed with 48 curved directional vanes, these rotors channel air efficiently for superior cooling and reduced thermal stress. The result is braking performance you can rely on through every corner, every lap, every session.
Features and Benefits
Direct replacement rings for Girodisc 992 GT3 Cup 410x36mm two-piece front rotors
Machined from proprietary U.S.-poured high-carbon cast iron for maximum thermal stability
48 curved directional vanes for optimal cooling and consistent performance
Lightweight two-piece floating design reduces unsprung mass and enhances handling
Includes all new hardware: drive pins, bolts, and washers
Precision machined, balanced, and assembled in the USA
Vehicle Fitment
2022+ Porsche 911 GT3 Cup (992)
These replacement rings are designed exclusively for Girodisc aluminum hats. They will not fit OEM or other aftermarket hat systems. This set replaces the original Girodisc front assemblies used in GT3 Cup and iron conversion configurations.
Why Choose Girodisc
Girodisc has set the standard for performance braking systems through precision engineering and uncompromising quality. Each rotor ring is developed for motorsport environments, ensuring consistent friction characteristics and resistance to thermal cracking under the most demanding conditions. With the D1-287 rings installed, your Porsche 992 GT3 Cup will brake with the same confidence and control that define true race-winning performance.
FAQs
Do these include the aluminum hats?No. The D1-287 kit includes only the iron rotor rings and a complete hardware kit. Your existing Girodisc hats are reused.
Can I install these with factory Porsche rotors?No. Girodisc replacement rings are engineered specifically for Girodisc hats and will not fit OEM or other aftermarket systems.
Are the rotors directional?Yes. Each ring features curved internal vanes that must be installed on the correct side for optimal airflow and cooling efficiency.
What’s included?Two 410x36mm front rotor rings (left and right) and a full hardware kit including new drive pins, bolts, and washers.
Ready to Refresh?
Bring your Porsche 992 GT3 Cup back to full braking potential with Girodisc D1-287 Front Replacement Rings. Designed for uncompromising performance on the track, these rotor rings deliver the cooling, balance, and durability needed for every race-winning lap. Order your set today from Competition Motorsport and keep your GT3 Cup braking with factory precision and motorsport strength.
GiroDisc Racing Brakes & Technologies
D1-291 GiroDisc Replacement Rotors (OEM Iron)
$1,599.00
Porsche 408x36mm Front Replacement Rings
Bring your Porsche’s braking system back to peak performance with the Girodisc D1-291 Front Replacement Rings. Designed for applications using 408x36mm Girodisc two-piece rotors, these rings deliver the same unmatched stopping power, thermal stability, and lightweight construction as your original setup—without the cost of new hats.
Each ring is CNC-machined from Girodisc’s proprietary U.S.-poured high-carbon cast iron alloy. The result is exceptional strength, cooling, and longevity for high-performance street and track use. Whether you’re driving your GT4 RS or GT3 RS at full throttle, these replacement rings ensure every lap, corner, and stop feels just as sharp as the first.
Features and Benefits
Direct replacements for Girodisc 408x36mm two-piece front rotors
Includes brand-new hardware—reuse your existing Girodisc aluminum hats
Manufactured from proprietary high-carbon cast iron for maximum heat capacity
48 curved directional vanes for superior airflow and cooling efficiency
Two-piece floating design reduces unsprung mass and improves handling response
Fully machined, balanced, and assembled in the USA
Vehicle Fitment
2022+ Porsche 718 Cayman GT4 RS (982) – with steel brakes
2023+ Porsche 911 GT3 RS (992) – with steel brakes
These replacement rings are designed exclusively for Girodisc aluminum hats and will not fit OEM or other aftermarket hat systems. They are not compatible with PCCB carbon-ceramic brakes.
Why Choose Girodisc
Girodisc brake systems are engineered for uncompromising performance. Each rotor ring is precision-machined, balanced, and tested to deliver consistent brake modulation and fade-free stopping power under extreme conditions. When your original rings reach their wear limit, these replacements let you refresh your braking system with OEM-level precision at a lower cost.
FAQs
Do these include the aluminum hats?No. The D1-291 kit includes only the rotor rings and new hardware. Your existing Girodisc hats are reused.
Can these be used with factory rotors?No. Girodisc replacement rings are specifically designed for Girodisc two-piece rotors and will not fit OEM or other aftermarket assemblies.
Are they directional?Yes. Each ring features curved internal vanes for optimized airflow and must be installed on the correct side for proper cooling performance.
What’s included?Two 408x36mm front rotor rings (left and right) plus a complete hardware kit with new drive pins, bolts, and washers.
Ready to Refresh?
Restore your Porsche’s braking confidence and consistency with Girodisc D1-291 Front Replacement Rings. Engineered for the 718 GT4 RS and 992 GT3 RS, these rings bring factory-level precision with motorsport-grade performance. Order your set today from Competition Motorsport and keep your Porsche braking at its absolute best.
GiroDisc Racing Brakes & Technologies
D1-302 Girodisc Lamborghini Huracán STO Front Replacement Rings
$1,557.00
Lamborghini Huracán STO Front Replacement Rings
Bring your Lamborghini Huracán STO’s braking system back to peak performance with Girodisc Front Replacement Rings. Designed as a direct replacement for the iron rotor surfaces on your existing Girodisc two-piece rotors, these rings allow you to retain your aluminum hats—saving cost, reducing downtime, and maintaining the precision balance your STO deserves. Each set includes new hardware for a perfect fit.
Motorsport-Grade Engineering
Every Girodisc ring is crafted in the USA from proprietary cast iron and precision machined for perfect balance and thermal stability. The curved vane design is developed through motorsport testing to act as a centrifugal air pump, pulling cool air through the rotor for consistent heat management and fade-free braking under extreme conditions.
Features
Sold as a pair and includes new replacement hardware
Direct replacement for Girodisc two-piece front rotors
Reuse your Girodisc aluminum hats to minimize cost
Made from proprietary U.S.-poured cast iron for strength and longevity
Curved vane design enhances cooling and reduces heat soak
Fully machined, balanced, and finished in the USA
Vehicle Fitment
2021–2025 Lamborghini Huracán STO (front axle equipped with Girodisc two-piece rotors)
Lamborghini Huracán STO Front Replacement Rings FAQs:
Do these fit OEM two-piece rotors? No. These rings are designed exclusively for use with Girodisc two-piece rotor systems and will not fit OEM or other aftermarket hats.
What’s included in the box? Two front replacement rings, new hardware, and installation instructions. You’ll reuse your existing Girodisc aluminum hats.
When should I replace the rings? Replace when the rotors reach minimum thickness or if any cracking, heat checking, or deformation is visible.
Should I replace both sides at once? Yes. Always replace both front rings simultaneously for balanced performance and even wear.
Can I install these myself? Experienced installers can perform the swap, but Girodisc recommends professional installation for correct torque specs and safety.
Are the rings balanced? Yes. Girodisc rings are precisely balanced for smooth, vibration-free braking right out of the box.
Please note: Girodisc replacement rings are designed for use only with Girodisc hats unless specifically stated otherwise.
GiroDisc Racing Brakes & Technologies
D1-307 Girodisc Front Replacement Rotor Rings
$1,245.00
Toyota GR Supra, BMW 348mm Front Replacement Rings
Restore your braking performance with the Girodisc D1-307 Front Replacement Rings, designed for the Toyota GR Supra and BMW Z4 M40i. These precision-engineered 348mm iron rotor rings are direct replacements for your existing Girodisc two-piece rotors, delivering the same championship-level performance, reduced unsprung weight, and thermal stability that make Girodisc the gold standard for performance braking.
Manufactured from Girodisc’s proprietary high-carbon cast iron alloy and machined in the USA, these rotors are built to handle extreme braking forces and high temperatures without fade. If your original Girodisc rotors have reached their wear limit, these replacement rings let you renew your braking setup while reusing your original Girodisc aluminum hats — saving cost without sacrificing quality.
Features and Benefits
Direct replacements for Girodisc 348mm front two-piece rotors
Crafted from proprietary U.S.-poured high-carbon cast iron
48 curved directional vanes maximize airflow and cooling
Lightweight two-piece design reduces unsprung mass
Includes all new hardware: drive pins, bolts, and washers
Engineered, machined, and balanced entirely in the USA
Vehicle Fitment
2020+ Toyota GR Supra (A90 / A91)
2019+ BMW Z4 M40i
BMW G29 Platform (B58 engine)
These rotor rings are designed exclusively for Girodisc aluminum hats and are not compatible with OEM or other aftermarket hat assemblies.
Why Choose Girodisc
Girodisc performance rotors are trusted by track enthusiasts and professional racers for their ability to handle high thermal loads while maintaining consistent braking feel. The D1-307 front replacement rings deliver the same performance and cooling benefits as a brand-new set — for a fraction of the price. Each ring is optimized for even heat distribution and minimal warping, giving you confident braking under pressure lap after lap.
FAQs
Do these include the aluminum hats?No. The D1-307 kit includes only the iron rotor rings and a new hardware kit. Your existing Girodisc hats are reused.
Are these compatible with factory rotors?No. Girodisc rings are engineered exclusively for use with Girodisc hats and cannot be mounted to OEM or other aftermarket assemblies.
Are the rotors directional?Yes. Each rotor features curved internal vanes that must be installed on the correct side for proper cooling and airflow direction.
What’s included?Two 348mm front rotor rings (left and right) and a full hardware kit with drive pins, bolts, and washers.
Ready to Upgrade?
When it’s time to refresh your braking system, the Girodisc D1-307 Front Replacement Rings deliver the unmatched cooling, strength, and consistency that define Girodisc. Perfect for both daily driving and track-day abuse, they’ll keep your Toyota GR Supra or BMW Z4 M40i stopping with confidence. Order your set today from Competition Motorsport and get back to peak performance.
GiroDisc Racing Brakes & Technologies
D1-308 Girodisc Mercedes 360mm Front Replacement Rings
$1,245.00
D1-308 Girodisc Mercedes 360mm Front Replacement Rings
These Girodisc D1-308 front replacement rings are sold in pairs and include new hardware. They are designed to bolt to existing Girodisc aluminum hats only (not compatible with OEM or other hats).
Vehicle Fitment
Mercedes-AMG GT (C190) 2017+ – Front (for Girodisc 360 mm kits)
Design & Performance
High-carbon iron rings with 48 curved internal vanes draw cooling air through the rotor. Floating two-piece construction reduces unsprung weight while reusable aluminum hats allow ring-only replacement.
Features
Replacement rings only; reuse your Girodisc hats
Includes new drive pins, spring clips, and Belleville washers
High-carbon iron rings with directional internal vanes
Slotted face for stable friction and pad cleanup
For Girodisc 360 mm front kits on the listed models
D1-308 Girodisc Mercedes 360mm Front Replacement Rings FAQs:
How do I know these rings match my hats? Verify your hat part number from the original Girodisc kit; D1‑308 mates to 360 mm front hats used in the listed AMG GT applications.
What is the minimum thickness? Replace when worn to Girodisc’s stated discard thickness or if cracks reach an edge (inspect regularly for track use).
Do I need threadlocker on the hardware? Use the supplied hardware and follow Girodisc torque/spec sheet; do not substitute fasteners.
Can I run these with drilled pads or track pads? Yes. Slotted rings are compatible with OEM and aggressive compounds; follow pad bedding procedures.
Related Products
A1-308 Girodisc Mercedes 360mm Front Rotors
A2-148 Girodisc Mercedes 360mm Rear Rotors
D1-308 Girodisc Mercedes 360mm Front Replacement Rings
D2-123 Girodisc Mercedes 360mm Rear Replacement Rings
GiroDisc Racing Brakes & Technologies
D1-308DS Girodisc Mercedes 360mm Front Replacement Rings (Dimpled & Slotted)
$1,387.00
D1-308DS Girodisc Mercedes 360mm Front Replacement Rings (Dimpled & Slotted)
These Girodisc D1-308DS front replacement rings are sold in pairs and include replacement hardware. They are designed for use with existing Girodisc aluminum hats and are not compatible with OEM or other aftermarket hats.
Vehicle Fitment
Mercedes models with Girodisc 360 mm front rotor kits
Not for 370 / 380 / 390 mm systems
Refresh Your Two-Piece Rotor Setup
Dimpled and slotted high-carbon iron rings deliver strong initial pad bite and stable performance under heat. Reusing your Girodisc hats keeps service costs down while maintaining braking performance.
Features
Replacement rings only; reuse Girodisc aluminum hats
Sold in pairs with replacement hardware
Dimpled & slotted surface for bite and gas evacuation
High-carbon iron with 48 curved vanes for cooling
Cost-effective rotor refresh solution
D1-308DS Girodisc Mercedes 360mm Front Replacement Rings FAQs:
Do these include hats? No, these are rings only and require existing Girodisc hats.
Are they sold individually? No, they are sold as a pair.
Can I use OEM hats? No, these rings are only compatible with Girodisc hats.
Are these track-ready? Yes, they offer excellent cooling and bite for performance driving.
GiroDisc Racing Brakes & Technologies
D1-310 Girodisc Mercedes A45, CLA45, GLA45 Front Replacement Rings
$1,104.00
D1-310 Girodisc Mercedes A45, CLA45, GLA45 Front Replacement Rings
D1-310 are front rings only, sold in pairs with fresh hardware. Reuse your existing Girodisc aluminum hats. Rings are engineered exclusively for Girodisc hats and are not compatible with OE or other aftermarket hats.
Vehicle Fitment
Mercedes-AMG A45 (W176) – Front (for A1-310 kits)
Mercedes-AMG CLA45 (C117) – Front (for A1-310 kits)
Mercedes-AMG GLA45 (X156) – Front (for A1-310 kits)
Service-Friendly Refresh
High-carbon iron rings with curved vanes maintain cooling performance. The included drive pins, clips, and Belleville washers restore proper float and clamp force.
Features
Replacement rings only; includes hardware
For use with Girodisc hats (A1-310 front rotor kits)
High-carbon iron, USA-poured and machined
Curved vane internal geometry for airflow
D1-310 FAQs
Minimum thickness or crack criteria? Replace if below Girodisc’s recommended service thickness or if a crack reaches the outer edge of the ring.
Bed-in required? Yes — follow a standard pad/rotor bedding procedure to stabilize the friction layer.
Hardware reuse? New hardware is included; do not reuse old pins/springs.
Torque spec? Follow Girodisc’s supplied instructions for fastener torque and sequence.
GiroDisc Racing Brakes & Technologies
D1-311 Girodisc Audi B9 S4, S5, SQ5 Front Replacement Rings
$1,245.00
D1-311 Girodisc Audi B9 S4, S5, SQ5 Front Replacement Rings
These D1-311 front replacement rings are sold in pairs with new hardware. Reuse your existing Girodisc aluminum hats. Rings are engineered exclusively for Girodisc hats and will not fit OE or other aftermarket hats.
Vehicle Fitment
Audi S4 (B9) – Front (for A1-311 kits)
Audi S5 (B9) – Front (for A1-311 kits)
Audi SQ5 (B9) – Front (for A1-311 kits)
Service-Friendly Refresh
High-carbon rings with curved vanes manage heat under repeated stops. New drive pins, clips, and Belleville washers restore the floating interface.
Features
Replacement rings only; includes hardware
For Girodisc A1-311 front rotor kits
High-carbon iron, machined in the USA
Curved vane geometry for airflow
D1-311 FAQs
When to replace? Replace at the recommended service thickness or if a crack reaches the outer edge.
Torque specs? Follow the included Girodisc instructions for torque and sequence.
Pad rebedding? Yes—rebed pads after ring replacement.
Related Products
A1-311 Girodisc Audi B9 S4, S5, SQ5 Front Rotors
A2-130 Girodisc Audi B8/B9 Rear Rotors
D2-130 Girodisc Audi 330mm Rear Replacement Rings
GiroDisc Racing Brakes & Technologies
D1-319 Girodisc Replacement Rotors
$1,132.00
Girodisc D1-319 Front Replacement Rotor Rings
Corvette C8 Z06 • For Girodisc 2-Piece Front Rotors (Non-Z07)
Refresh your braking performance with Girodisc D1-319 Front Replacement Rotor Rings for the 2023+ Chevrolet Corvette C8 Z06. Designed as direct replacements for your existing Girodisc two-piece front rotors, these rings restore consistent, track-ready stopping power.
Key Features
Direct-fit (Non-Z07): Replaces worn rotor rings on Girodisc two-piece front rotors for the C8 Z06.
Track-ready construction: Proprietary high-carbon cast iron for excellent thermal capacity and stability under extreme heat.
Floating mount design: Stainless hardware and alloy drive pins allow axial float to reduce stress, noise, and warping.
Efficient cooling: 72 curved vanes act as a centrifugal pump to move air and manage heat more effectively than solid rotors.
Hardware included: Ships with new bolts and mounting hardware for a straightforward install.
Perfect For
Track days and HPDE
High-performance street driving
C8 Z06 owners running Girodisc two-piece front rotors
Replacing worn rings without buying new rotor hats
What's Included
(2) Front Girodisc D1-319 rotor rings
All required mounting hardware
Fitment
2023+ Chevrolet Corvette C8 Z06 with Girodisc two-piece front rotors (non-Z07 brake package)
Not compatible with OEM one-piece or carbon-ceramic setups.
Why Girodisc
Girodisc manufactures premium motorsport and high-performance braking components in the USA. Whether you’re chasing lap times or driving spiritedly on the street, these rings deliver consistent, confidence-inspiring braking.
SKU: D1-319
GiroDisc Racing Brakes & Technologies
D1-320 Girodisc Corvette C8, Camaro 398mm Front Replacement Rings
$1,458.00
Girodisc Corvette C8, Camaro 398mm Front Replacement Rings
Refresh the braking performance of your Corvette C8 or Camaro with Girodisc 398mm Front Replacement Rings. Designed as direct replacements for existing Girodisc two-piece rotors, these rings let you reuse your aluminum hats, saving cost and maintaining the precision balance and performance your car was built for. Each pair comes complete with new hardware for a perfect fit.
Engineered for Track-Level Performance
Each Girodisc replacement ring is machined in the USA from high-quality, proprietary cast iron and features a race-proven curved vane design. This configuration draws cooling air through the rotor, enhancing thermal control and ensuring consistent braking during high-speed track sessions or spirited driving. The result is fade-free performance and long-term durability.
Features
Sold as a pair and includes new replacement hardware
Direct replacement for Girodisc two-piece front rotors
Reuse your existing Girodisc aluminum hats to save cost and time
Made from proprietary U.S.-poured cast iron for durability and heat management
Curved vane internal design promotes maximum airflow and cooling
Fully machined, balanced, and finished in the USA
Vehicle Fitment
2020–2025 Chevrolet Corvette C8 (all trims equipped with Girodisc 398mm front rotors)
2016–2024 Chevrolet Camaro SS, ZL1, and 1LE models with Girodisc 398mm front rotors
Corvette C8, Camaro 398mm Front Replacement Rings FAQs:
Do these fit OEM two-piece rotors? No. These rings are specifically designed for Girodisc two-piece rotor systems and will not fit OEM or other aftermarket hats.
What’s included in the kit? Two 398mm replacement rings, new hardware, and installation instructions. Your Girodisc aluminum hats are reused.
When should I replace my rings? Replace when minimum thickness is reached or if cracking, warping, or heat checking occurs.
Do I need to replace both sides at the same time? Yes. Always replace both front rings together for balanced braking and even wear.
Can I install these myself? Skilled DIYers can install them, but Girodisc recommends professional installation to ensure proper torque specs and safety.
Are these balanced? Yes. Each Girodisc ring is precision-balanced for smooth, vibration-free braking performance.
Please note: Girodisc replacement rings are designed exclusively for use with Girodisc hats unless otherwise specified.