CMS Performance
CMS Performance Harness Bar For C8 Corvette
$795.00
CMS Performance Bolt-In Harness Bar For C8 Corvette
This Harness Bar Fits The Following Cars:
2020+ Chevrolet Corvette Stingray & Z51 (C8)
2023+ Chevrolet Corvette Z06 (C8)
Does Not Fit Convertible / Roadster
Click Here For Installation Instructions
The Best Harness Bar in the World for the C8 Corvette
The C8 Corvette is an incredible, affordable track-day car that easily achieves race car performance on track. Managing that kind of performance wearing nothing but the three-point seat belt is a chore and leaves a lot to be desired in terms of safety. That's where we come in with the CMS Performance C8 Corvette Harness Bar. This provides a rock-solid, high-strength bar to mount shoulder straps for a 4-, 5-, or 6-point racing harness to keep you firmly and safely in your seat.
The CMS Performance C8 Harness Bar is the strongest, most elegantly designed C8 harness bar on the market. It seamlessly integrates into your C8 interior, and we custom powder coat it whatever color you choose, including factory color-matched hues. The CMS C8 bar allows full seat travel while locating your harness shoulder belts at the proper height for maximum on-track safety and security.
Installation requires no drilling or other modification of the chassis, and only minor modification of your interior trim.
The C8 Corvette Harness Bar That's Made in America
Every CMS harness bar is handcrafted in America by master fabricators for a perfect fit, beautifully 360o TIG welded for high strength, and fully powder-coated in our facility for a brilliant, durable finish. And there's no extra charge for custom colors. CMS operates a complete powder-coating facility to offer you color-matched Corvette factory colors1, giving your C8 a customized look that will last.
CNC mandrel bent and fully TIG welded from premium Docol R8 Advanced High-Strength Steel (stronger than 4130 CrMo or DOM) and finished in rich powder-coat.
Complete, detailed instructions make installation pretty simple (figure about an hour if you're reasonably handy). Installation requires modifying the two lock/seat belt trim panels and the upper trim of your center console. Our installation instructions also include cutting templates should you decide to modify your existing trim.
Add Harnesses To Complete Your Safety Upgrade
Add optional four-point Schroth Profi II ASM or Sabelt Steel Series harnesses along with the CMS Performance Harness Install Kit, and you're ready to hit the track with greatly improved driver and passenger safety. These harnesses were specifically designed for use in street cars with no sub strap pass-through in the seat.
CMS Performance C8 Corvette Harness Bar Details:
Materials: 1.50″ x .095" Docol R8 Advanced High-Strength Steel for superior safety
Construction: Full 360o TIG welding for ultimate strength, integrity, and beauty
Finish: Custom-color powder coating in any color you can imagine
Weight: 18 lbs. (8.2 kg)
Features: Unobstructed rear view; designed, built, and finished in the USA; allows full seat travel with any seat
Comes with all necessary hardware
1 Note: powder coat colors are professionally matched to be as close as possible to factory paint codes. However, color-matching powder is not the same as mixing liquid paint. In a few cases, slight color variance is normal and is not perceptible with the roll bar installed inside the car.
This product is intended for off-road race track use only
Alpinestars
Alpinestars Atom Graphic Driver Race Suit Bootcut
$789.95
Alpinestars Atom Graphic Driver Race Suit (Boot Cuff)
The Alpinestars Atom race suit has a two-layer construction with a soft, knitted liner for optimum levels of protection and driver comfort. With a twill outer shell for heat- and flame-protection and aramid lining for comfort and breathability, this suit is equipped with fully-floating arm construction, pre-curved arms and legs, and stretch panels on the crotch area, back, and waist for an optimized fit.
Note: This SFI-approved race suit has boot-cut leg cuffs.
Alpinestars Atom Graphic Boot Cuff Race Suit Features
Certified to the SFI 3.2A/5 standard
Two-layer suit incorporating knitted stretch panels for maximum comfort and excellent breathability
Alpinestars fully-floating arm construction with stretchable knit fabric ensures minimal material resistance while driving
Alpinestars Atom Graphic Boot Cuff Race Suit Construction
Aramidic knitted stretch panels on the back, waist, and crotch for enhanced comfort and ease of movement
Ergonomic collar with a soft stretchable insert for extended coverage and maximum driver comfort
100% aramidic outer shell fabric for exceptional heat and flame-resistant proprieties
Adjustable belted waist ensures a secure fit
Anatomical arms, legs, and torso patterned paneling for a comfortable fit in the driving position
Alpinestars exclusive shoulder epaulette construction eases driver extraction in the event of a crash
Ribbed elasticized wrists and cuffs
Premium YKK double-slider metal zipper
Thigh pockets for convenient, peace-of-mind storage
Regular fit design
Weight: 420 g/m2
Sparco S.p.A.
Sparco Stealth RF Helmet SA2025 / FIA 8859-2024
$789.00
Sparco Stealth RF (SA2025 / FIA 8859-2024)
The Sparco Stealth RF helmet combines advanced motorsport protection with comfort and precision fit. Constructed from a lightweight fiberglass shell, it exceeds FIA 8859-2024 and Snell SA2025 standards—delivering top-tier safety without unnecessary weight. Designed for racers who demand confidence behind the wheel, it’s engineered for superior impact absorption, ventilation, and long-term comfort.
Lightweight Protection, Race-Ready Design
Every element of the Stealth RF was created to enhance performance under pressure. Its aerodynamic shell keeps you stable at speed, while the efficient multi-vent system prevents heat buildup so you can stay focused through the longest stints. The removable fire-retardant lining keeps you cool and clean, and the helmet comes ready with factory-installed HANS posts for immediate use on track.
SPARCO STEALTH RF HELMET FEATURES
• Lightweight fiberglass shell exceeding FIA 8859-2024 and Snell SA2025 standards• Advanced ventilation with front chin and top intakes plus rear exhaust ports• Removable, washable fire-retardant lining for long-term freshness• Optional drink-system compatibility for endurance racing• Three-position adjustable visor for optimized airflow and clarity• Central locking visor mechanism for a secure, race-grade seal• Factory-installed FHR (HANS) posts ready for use• Dual shell sizes for ideal fit and weight balance• Seven available sizes to accommodate a wide range of drivers
SPARCO STEALTH RF HELMET SIZE CHART
SPARCO STEALTH RF HELMET FAQs:
Is the Stealth RF certified for competition? Yes. It meets both FIA 8859-2024 and Snell SA2025 homologation standards, making it eligible for most major racing series.
Can I remove and wash the interior? Yes, the fire-retardant liner is fully removable and washable for easy cleaning between events.
Does it include HANS posts? The Stealth RF comes from the factory with FHR (HANS) posts installed and ready to use.
Is a drink system supported? Yes. The helmet is pre-drilled to accommodate an optional drink-tube setup for endurance and long-distance racing.
The Sparco Stealth RF offers elite-level safety and comfort in one streamlined package—built for drivers who take every lap seriously.
Schroth Safety Products LLC
Schroth ASM 4 Point Harness | Porsche GT3/GT4
$789.00
Schroth Four-Point Harness for Porsche Carbon Seats
Schroth's Famous ASM Technology For Your Porsche!
The Schroth Porsche GT3/GT4 four-point harness is designed specifically for the factory Porsche one-piece carbon seats. This harness comes with specific lap-belt brackets that don't require any drilling for installation, as they attach to the factory-engineered lap-belt mounting locations. A harness bar or roll bar are required for installation of the shoulder belts.
Schroth's exclusive ASM (anti-submarine) technology on this four-point harness holds the driver’s pelvis snug in case of a crash, preventing “submarining” below the lap belt and sliding out of the seat. With this harness, there’s no need to install a sub-strap mounting bar under the seat, which is also very useful for Porsche passenger seats that don’t have a pre-cut sub-strap slot. The Schroth Porsche GT3/GT4 Four-Point Harness has a street-legal FE Camlock that releases like a traditional seat belt -- just a push of the button!
Designed for Porsche OEM carbon bucket seats. This is not an FIA homologated competition racing restraint.
See Schroth's Harness Installation Checklist Here
Schroth Porsche GT3/GT4 ASM Harness Features
Shoulder belts: Pull-down, 2-inch webbing
Lap belts: Pull-down, 2-inch webbing with ZIP Adjuster
Shoulder fittings: LV4 (2-inch shoulders), LV10 also included
Lap belt fittings: Sewn-in B43A (Porsche -specific hardware)
Included Hardware:
(2) S82 Flat Washers
(2) SG29 Bolts
(2) S104 Spacer/Collars
(2) S184 Flat Washers
GiroDisc Racing Brakes & Technologies
D1-110 GiroDisc Replacement Rings (Garage Sale)
$787.66
$1,050.00
D1-110 Girodisc Front Replacement Rotor Rings (Discontinued Design)
Discontinued New old stock rotor. These have the straight grooves as images show, not the new curved grooves. Final Sale, no returns or exchanges.
REPLACEMENT ROTOR DISC 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 Giro Disc 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 grade12 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.
MYLAPS Sports Technology Group
MyLaps X2 RaceLink Club Transponder Kit | Porsche Carrera Cup Legal
$786.00
MyLaps X2 RaceLink Club Transponder Kit
Porsche Carrera Cup Legal
The MyLaps X2 RaceLink Club is the economical X2 transponder system that is Porsche Carrera Cup legal (per 2.10.2). The MyLaps X2 RaceLink Club has no CAN data bus connection. Legal per Porsche Carrera Cup North America Pro-Am 991, the MyLaps X2 RaceLink Club Transponder Kit is a digital on-board marshaling system that includes the X2 RaceLink Club main unit as well as all cabling and antennas needed to get your system up and running. As a digital on-board marshaling system, the X2 RaceLink Club enhances on-track safety by signaling local/full course cautions as well as other flag status.
MYLAPS X2 RACELINK CLUB TRANSPONDER KIT DETAILS
Manufacturer: MyLaps Sports Timing
Manufacturer Part No: 10C100 + 40C469
Usage: professional/club auto and motorcycle racing
Operating voltage: 7-18VDC (12VDC typical)
Power consumption: 1.3W (110mA @ 12V)
GPS positioning: 3 concurrent GNSS reception
Update rate: 5 Hz
Operating temp: -20ºC to 50ºC (-4ºF to 122ºF)
Transponder dimensions: 83 x 60 x 24mm (3.3 x 2.4 x 1.0 in.)
Weight: 120g (0.26 lb.)
Waterproof: IP65
MyLaps X2 RaceLink Club Transponder Kit vs X2 RaceLink Pro:
The MyLaps X2 RaceLink Club is a more affordable version of the X2 RaceLink Pro. The RaceLink Club eliminates CAN messaging for vehicle telemetry.
WHAT'S IN THE BOX of MyLaps X2?
MyLaps X2 RaceLink Club
RF whip antenna & adapter cable
RF antenna extension cable, 1m (3.3 ft.)
GPS antenna
Charging cable (USB to M8)
M8 Power cable (DP use)
Protector caps (2)
Brey Krause
Brey Krause R-1155 Harness Bar 6 Camaro
$783.00
Brey Krause R-1155 Harness Bar For Gen6 Chevy Camaro
The Brey Krause Model R-1155 Harness Bar for the 2015 and later Chevrolet Camaro properly locates and supports racing shoulder harnesses relative to the driver. In the case of an accident, it helps protect the driver's shoulders and spine. The harness guides also prevent excessive shifting and fatigue of the driver during the high G loads of cornering and braking. Easy to install and remove, the Brey Krause R-1155 Harness Bar uses existing holes and mounting points, and requires no vehicle modification. Kit includes everything needed for a proper 4-point harness set-up, while allowing enough seat travel for the tallest of drivers.
Brey Krause R-1155 Camaro Harness Bar Details:
Fits all Sixth-Gen Chevrolet Camaro models (2015+)
Material: Type 304 stainless steel
Finish: Powdercoated in durable black wrinkle-finish
Weight: 16 lbs.
Installation: Bar attaches to factory mounting points in "B" pillars.
Pagid
Pagid Racing Brake Pads No. 4945 (Front)
$782.34
Pagid Racing Brake Pad Shape No. 4945
Fits the Following Vehicles:
Make
Model
Build (Year)
Front
Rear
Nissan
R35 GTR [ceramic brakes]
2009 - 24
X
Pagid Racing Brake Pads are engineered for high-performance driving, delivering exceptional stopping power, durability, and control under the most demanding conditions. Trusted by professional racers and performance enthusiasts worldwide, these pads are crafted using advanced friction materials and cutting-edge technology to ensure consistent performance, low fade, and excellent modulation. Whether you're on the track or tackling aggressive street driving, Pagid Racing Brake Pads provide the reliability and confidence you need to push your vehicle to its limits.
Pagid RSC 1 Compound (Ceramic Rotors Only)
A race and track day compound for all known types of ceramic brake discs, RSC 1 is a low metallic resin bonded material containing steel and aramid fibers. This material features good all-round characteristics and is suitable for all types of usage.
GiroDisc Racing Brakes & Technologies
D1-157 Girodisc BMW E9X M3 Front Replacement Rings
$780.00
D1-157 Girodisc BMW E9X M3 Front Replacement Rings
Restore the high-performance braking balance of your BMW M3 with Girodisc D1-157 380mm front replacement rings. These precision-machined components bolt directly to your existing Girodisc aluminum hats using the included floating hardware kit. Each ring is made from Girodisc’s proprietary high-carbon cast iron, delivering exceptional cooling capacity, consistent pedal feedback, and fade-free performance under repeated heavy braking.
Vehicle Fitment
Compatible with:• BMW E90 M3 Sedan (2008–2011)• BMW E92 M3 Coupe (2008–2013)• BMW E93 M3 Convertible (2008–2013)Note: Designed exclusively for Girodisc 380mm two-piece front rotor systems. Not compatible with OEM one-piece rotors or carbon-ceramic conversions.
Features
• Sold as a left/right pair with complete floating hardware kit• Direct replacements for Girodisc 380mm two-piece front rotors• CNC-machined from high-carbon cast iron for improved thermal stability and durability• Directional curved vanes maximize airflow and rotor cooling• Maintains factory brake bias, ABS, and DSC calibration• Precision-balanced for vibration-free braking performance• Designed exclusively for Girodisc aluminum hats
Specifications
• Diameter: 380 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 D1-157 BMW E9X M3 Front Ring FAQs
Do these fit the OEM M3 rotor hats? No. These are designed only for Girodisc aluminum hats and will not fit OEM one-piece rotors or carbon-ceramic conversions.
What pad compounds are recommended for this setup? For street use, Ferodo DS2500 or Hawk HPS 5.0 pads work well. For track days, Pagid RS29 or Endless MX72 provide stable friction and fade resistance.
What torque should be used for the floating hardware? Torque each bolt to 12 ft-lbs (16 Nm) with blue Loctite. After the first track session, recheck hardware torque for consistency.
Do these rotors improve braking feel? Yes. The two-piece floating design reduces unsprung weight and improves pedal modulation by managing heat transfer more efficiently than factory rotors.
Upgrade your BMW E9X M3’s braking system with Girodisc D1-157 380mm front replacement rings — engineered for endurance, balance, and precision braking on both street and circuit.
GiroDisc Racing Brakes & Technologies
D1-169 Girodisc Ford Focus RS Front Replacement Rings
$780.00
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
D2-271 Girodisc Chevrolet Camaro (6th Gen) Rear Replacement Rings
$780.00
Girodisc Chevrolet Camaro (6th Gen) Rear Replacement Rings
Maintain the razor-sharp braking performance of your 6th Gen Camaro with Girodisc 365mm rear replacement rings. These precision-engineered rings are direct replacements for Girodisc two-piece rotors, restoring the braking consistency and cooling efficiency demanded by track and street enthusiasts alike.
Vehicle Fitment
Compatible with:• 2016–2024 Chevrolet Camaro SS• 2017–2024 Chevrolet Camaro ZL1• 2019–2024 Chevrolet Camaro ZL1 1LE• 2016–2024 Chevrolet Camaro LT1 (with performance brake package)Note: These are friction rings only. They attach directly to existing Girodisc aluminum hats using the included floating hardware kit.
Track-Tested Engineering
Every Girodisc rotor ring is cast from a proprietary high-carbon iron alloy and precision-machined in the USA. The curved internal vanes function as a centrifugal pump, pulling air through the disc to dissipate heat efficiently during hard braking. This design reduces fade and ensures consistent pedal feel through repeated heat cycles—whether you’re carving corners or pushing limits at the track.
Features
• Direct replacement for Girodisc 365mm rear rotors• Fits 6th Gen Camaro SS, ZL1, ZL1 1LE, and LT1 performance packages• High-carbon iron alloy ensures strength and stability under heat• Directional curved vane design improves cooling efficiency• Fully machined, balanced, and assembled in the USA• Includes new floating hardware kit• Sold/priced per pair
Specifications
• Diameter: 365mm• Position: Rear• Material: High-carbon cast iron• Includes: Two rotor rings and complete hardware kit• Made in the USA• Sold/priced per pair
Girodisc D2-271 Replacement Ring FAQs
Do these rings fit OEM Camaro rotors? No. These are designed exclusively for Girodisc two-piece rotor systems or compatible aftermarket hats.
Is installation straightforward? Yes. These rings bolt directly to your existing Girodisc hats using the provided hardware. No modifications are required.
Are these rotors suitable for track use? Absolutely. Girodisc rings are track-proven, offering superior heat management and resistance to warping or cracking.
Can I reuse my current hardware? We recommend using the new hardware kit included with the rings for maximum safety and performance.
Rebuild your Camaro’s braking system the right way with Girodisc D2-271 rear replacement rings — designed for performance, precision, and unmatched stopping confidence.
GiroDisc Racing Brakes & Technologies
D1-284 Girodisc Acura TLX Type S Front Replacement Rings
$780.00
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
D2-307 Girodisc Toyota GR Supra / BMW 345mm Rear Replacement Rings
$780.00
Toyota GR Supra, BMW 345mm Rear Replacement Rings
Bring your Toyota GR Supra or BMW back to peak braking performance with the Girodisc D2-307 Rear Replacement Rings. These high-performance iron rotor rings are engineered as direct replacements for your Girodisc two-piece rotors, delivering exceptional cooling, reduced weight, and race-proven reliability for street and track use alike.
When your Girodisc rotors reach their wear limit, these precision-machined rings let you refresh your braking system without buying new hats. Each ring is crafted from Girodisc’s proprietary U.S.-poured high-carbon cast iron, designed for extreme heat resistance and consistent braking under load. Whether you’re attacking corners on the track or driving hard on the street, Girodisc ensures your braking stays sharp, stable, and fade-free.
Features and Benefits
Direct replacements for Girodisc 345mm two-piece rear rotors
Machined from proprietary high-carbon cast iron for superior durability
48 curved directional vanes optimize airflow and heat dissipation
Lightweight design minimizes unsprung and rotational mass
Includes all new drive pins, bolts, and washers for installation
Fully machined, balanced, and assembled in the USA
Vehicle Fitment
2020+ Toyota GR Supra (A90 / A91)
2019+ BMW Z4 M40i
BMW G29 Platform (B58 engine)
These rings are designed exclusively for Girodisc aluminum hats and will not fit OEM or other aftermarket rotor hats.
Why Choose Girodisc
Girodisc brake systems are the benchmark for performance and reliability in motorsport-inspired braking. The D2-307 replacement rings allow you to maintain top-tier braking performance at a fraction of the cost of full rotor replacement. Every Girodisc component is precision engineered, race-tested, and built to handle extreme thermal stress with consistent, confident braking lap after lap.
FAQs
Do these include the aluminum hats?No. The D2-307 kit includes only the iron rotor rings and a new hardware kit. Your existing Girodisc hats are reused.
Can these be used with factory rotors?No. Girodisc replacement rings are designed exclusively for Girodisc two-piece rotors and will not bolt to OEM or other aftermarket hats.
Are these rotors directional?Yes. Each rotor ring features curved internal vanes and must be installed on the correct side for optimal airflow and cooling efficiency.
What comes in the box?A pair of 345mm rear rotor rings (left and right) plus all new drive pins, bolts, and washers.
Ready to Upgrade?
When it’s time to restore the full stopping power of your Toyota GR Supra or BMW Z4, the Girodisc D2-307 Rear Replacement Rings deliver uncompromising quality, cooling performance, and long-term durability. Order your set today from Competition Motorsport and keep your braking performance at its absolute best.
GiroDisc Racing Brakes & Technologies
D1-310 Girodisc Mercedes A45, CLA45, GLA45 Front Replacement Rings
$780.00
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
D2-035 Girodisc Porsche 981, 718 Rear Replacement Rings
$780.00
Girodisc Porsche 981, 718 Rear Rings
Refresh your Porsche’s braking performance with Girodisc D2-035 350mm rear replacement rings. These precision-machined, high-carbon cast iron rings bolt directly to your existing Girodisc aluminum hats using the included floating hardware kit. Replace only the wear surface to restore full braking performance while retaining your lightweight Girodisc two-piece system.
Vehicle Fitment
Compatible with:• Porsche 981 Cayman / Boxster (rear)• Porsche 718 Cayman / Boxster (rear)Note: For Girodisc 350mm two-piece rear rotor systems only. Designed to mate with original Girodisc aluminum hats — not compatible with factory two-piece rotor hats or PCCB systems.
Features
• Sold as a left/right pair with new floating hardware kit• CNC-machined from high-carbon cast iron for heat capacity and strength• Curved directional vanes maximize cooling and reduce fade• Bolt-on fitment to Girodisc aluminum hats — no modifications required• Balanced and heat-treated for consistent braking feel• Manufactured in Bellingham, WA, USA
Specifications
• Diameter: 350mm• Position: Rear• Material: High-carbon cast iron• Mount type: Floating two-piece system• Includes: Two rings and hardware kit• Sold/priced per pair• MSRP: $780.00
Girodisc D2-035 Porsche 981 / 718 Rear Replacement Ring FAQs
Can these be installed with the OEM Porsche hats? No. These are designed exclusively for Girodisc aluminum hats and are not compatible with factory two-piece rotor assemblies.
Will these fit PCCB or steel brake systems? Only the Girodisc steel two-piece rotor system — they are not designed for Porsche Ceramic Composite Brakes (PCCB).
Are they suitable for track use? Yes. The high-carbon alloy and floating design resist cracking and warping under repeated high-temperature braking on track.
How do I know when to replace the rings? Replace them when the rotor surface reaches minimum thickness or shows visible heat checking, per Girodisc wear specifications.
Restore confidence in your Porsche 981 or 718 Cayman and Boxster with Girodisc D2-035 350mm rear replacement rings — the perfect blend of precision, performance, and cost-effective service life.
GiroDisc Racing Brakes & Technologies
D1-268 Girodisc Toyota GR Corolla / GR Yaris Front Replacement Rings
$780.00
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.
