GiroDisc Racing Brakes & Technologies
A2-091 Girodisc Ford S197 Mustang GT500 ('13–14) Rear Rotors
$1,416.00
Girodisc Ford S197 Mustang GT500 ('13-14) Rear Rotors
These Girodisc 2-piece floating rear rotors are a direct replacement for the 2013–2014 Ford Mustang GT500 with the 5.8L engine and 350mm rear rotors. Designed for high-performance driving and track use, this upgrade offers superior cooling efficiency, reduced weight, and improved durability over factory components.
Each assembly features a thicker 22mm rotor ring compared to the factory 19mm setup, providing enhanced heat capacity without requiring any modifications. The fully floating design reduces unsprung and rotational mass, improving suspension response and braking consistency under heavy use.
Race-Inspired Design and Materials
Each rotor ring is machined from Girodisc’s proprietary high-carbon iron alloy, engineered for superior thermal stability and resistance to cracking under repeated heat cycles. The 48 curved directional vanes function as internal air pumps, drawing cooling air through the center to effectively dissipate heat during braking.
The hat is precision-machined from 6061-T6 aluminum and finished with a black anodized coating for corrosion protection and weight reduction. The floating system employs cadmium-plated steel drive pins, Belleville washers, and spring clips to ensure quiet operation and proper axial/radial float—ideal for both street and track use.
Vehicle Fitment
Ford Mustang GT500 5.8L (2013–2014)
Can be retrofitted to other S197 Mustangs with the correct 350mm rear brake components
Technical Specifications
Part Number: A2-091
Position: Rear
Rotor Diameter: 350mm
Rotor Thickness: 22mm (OEM 19mm)
Minimum Thickness: 20mm
Material: High-carbon cast iron rotor, 6061-T6 aluminum hat
Vane Design: 48 curved directional vanes
Drive Pins: Cadmium-plated high-strength steel
Weight: Lightweight 2-piece design reduces unsprung mass
Sold/Price: Per pair
FAQs for Girodisc A2-091
Will these fit my non-GT500 Mustang? These are designed for the 2013–2014 GT500 5.8L. They can be retrofitted to other S197 Mustangs if upgraded to the 350mm rear brake configuration.
Do these require any modifications? No modifications are needed on the 2013–2014 GT500. For retrofits, ensure you have the correct calipers, brackets, and hardware.
Are they rebuildable? Yes. The rotor rings can be replaced using Girodisc part number D2-091 once they reach minimum thickness or show wear.
Will they make noise during normal driving? No. The Belleville washers and spring clips maintain tight hardware alignment to eliminate rattling, even during street use.
Upgrade your GT500’s braking performance with Girodisc’s precision-engineered 2-piece floating rotors—trusted by racers and performance drivers for their reliability, cooling capacity, and long-term durability.
GiroDisc Racing Brakes & Technologies
A1-078 Girodisc Alfa Romeo 4C Front Rotors
$1,416.00
Girodisc Alfa Romeo 4C Front Rotors
The Girodisc front rotors for the Alfa Romeo 4C are precision-engineered to improve braking performance while maintaining perfect factory fitment. Designed as a direct replacement for the OEM rotors, these lightweight two-piece discs deliver faster response, cooler operating temperatures, and reduced rotational mass for sharper handling and braking consistency both on the street and track.
Lightweight. Efficient. Built for the 4C.
The central hat section of each rotor is made from U.S.-sourced 6061-T6 aircraft-grade aluminum for superior strength with minimal weight. Girodisc’s proprietary cast-iron rings are poured and machined in-house, using a curved vane design developed in racing to act as a centrifugal pump—drawing air through the disc for maximum cooling efficiency. The result is a fade-resistant braking system that enhances pedal feel and control.
Girodisc A1-078 Features
• Direct bolt-on replacement for OEM Alfa Romeo 4C front rotors• Two-piece floating design reduces unsprung and rotational mass• Curved vane internal design increases airflow and cooling• 10 high-strength alloy steel drive pins for precise float• Anti-noise spring washers eliminate rattle and vibration• U.S.-machined from 6061-T6 aluminum and proprietary cast iron• Fully rebuildable — only replace the iron ring when worn
Vehicle Fitment
Compatible with:• 2015–2020 Alfa Romeo 4C Coupe• 2015–2020 Alfa Romeo 4C SpiderDirect replacement for OEM front rotors. Works with factory calipers and ABS without modification.
FAQs: Girodisc Alfa Romeo 4C Front Rotors
Do these rotors require any modifications? No, they bolt directly to the factory calipers and hubs with no spacers or adapters required.
Are they suitable for track use? Yes, Girodisc rotors are designed to handle repeated high-temperature cycles and heavy braking loads typical of track environments.
What are they made of? The rotor hat is CNC-machined from 6061-T6 aluminum, and the rotor ring is Girodisc’s proprietary high-carbon cast iron for superior heat dissipation.
Can I replace just the rotor rings later? Absolutely — the Girodisc system is fully rebuildable. Replacement rings are available separately when the originals wear out.
Upgrade your Alfa Romeo 4C with Girodisc precision rotors — delivering lighter, stronger, and cooler braking performance for the road and the circuit.
GiroDisc Racing Brakes & Technologies
A1-130 Girodisc Audi B8 S4 / S5 Front Rotors
$1,416.00
Audi B8 S4, S5 Front Rotors
Upgrade your Audi B8 S4 or S5 with Girodisc 2-piece floating rotors for reduced unsprung weight, improved cooling, and OEM-level fitment. These precision-engineered replacements bolt directly to your car without modifications, maintaining perfect compatibility with factory calipers, brake bias, and ABS. Each rotor sheds over 4 lbs compared to stock — 19.1 lbs versus 23.6 lbs — for faster suspension response and sharper acceleration.
These rotors also fit B8 A4, S4, and S5 models upgraded with the four-piston Brembo caliper from the Q5 3.0T, making them a versatile performance upgrade across the Audi platform. Whether you’re carving canyons or pushing hard on track, Girodisc delivers cooler, quieter, and more consistent braking.
Precision-Engineered Performance
Vehicle Fitment
Audi B8 S4
Audi B8 S5
Audi B8 A4 / S4 / S5 with Q5 3.0T Brembo Caliper Upgrade
Features
Direct OEM replacement: Bolts directly to stock calipers, no adapters or modifications required.
Curved vane ventilation: Directional vanes act as a centrifugal pump, moving air through the disc for superior cooling.
Floating mount system: Ten high-strength drive pins and anti-noise washers allow for heat expansion while maintaining quiet operation.
Lightweight performance: Over 4 lbs lighter per rotor for improved steering feel and acceleration.
U.S.-sourced materials: Machined from 6061-T6 aluminum and proprietary cast iron entirely in-house at Girodisc.
FAQs
Will these fit factory calipers? Yes, they’re designed for OEM S4/S5 brakes and also fit A4/S5 models upgraded with Q5 Brembos.
Are these rotors directional? Yes, each rotor features a curved vane pattern optimized for left/right installation.
Will they change brake bias? No, Girodisc rotors maintain OEM brake balance and ABS function.
Do they make noise? No, the anti-noise spring washers prevent rattling while preserving thermal float.
How are they sold? Sold and priced per pair.
Enhance your Audi’s braking with Girodisc floating rotors — lighter, stronger, and designed to perform flawlessly on both road and track.
GiroDisc Racing Brakes & Technologies
A1-185 Girodisc Subaru WRX STI ('18+) Front Rotors
$1,416.00
Subaru WRX STI ('18+) Front Rotors
Give your VA-chassis STI the braking consistency it deserves with Girodisc’s 2‑piece floating front rotors. They bolt on in place of the factory discs with no modifications, maintain OEM brake bias and ABS calibration, and deliver cooler operation with a more confident pedal feel during repeated hard stops.
Machined and assembled in the USA, these rotors pair a lightweight 6061‑T6 aluminum hat with Girodisc’s proprietary high‑carbon iron rings. The internal curved vanes act like a centrifugal pump, drawing air through the disc to manage heat and reduce fade on back‑to‑back braking events.
Precision‑Engineered Performance
Vehicle Fitment
Subaru WRX STI (2018–2021, VA)
A1-185 Girodisc Subaru WRX STI ('18+) Front Rotors Features
True OEM replacement: Direct bolt‑on with factory calipers and hardware—no adapters needed.
Curved vane ventilation: 48 directional vanes circulate cooling air through the rotor to control temperatures.
Floating mount system: High‑strength drive pins with anti‑noise spring washers allow smooth thermal expansion without rattle.
Serviceable two‑piece design: Reuse the aluminum hats and replace only the iron rings when worn.
Made in the USA: Designed, cast, and machined in‑house to motorsport standards.
A1-185 Girodisc Subaru WRX STI ('18+) Front Rotors FAQs
Do these fit the factory Brembo calipers? Yes—this kit is designed to bolt directly to the OEM STI calipers.
Are they suitable for daily driving? Absolutely. They’re quiet and smooth on the street yet robust enough for track days.
Will they change brake bias? No. Girodisc designs maintain stock bias and work seamlessly with ABS and stability systems.
Are they sold individually? No—Girodisc rotors are sold and priced per pair.
Step up to Girodisc floating rotors for your WRX STI and enjoy cooler, more consistent braking with reduced fade and sharper pedal response.
GiroDisc Racing Brakes & Technologies
A1-204 Girodisc Kia Stinger GT / Genesis G70 Front Rotors
$1,416.00
Kia Stinger GT / Genesis G70 Front Rotors
Upgrade your Kia Stinger GT or Genesis G70 braking system with Girodisc’s precision-engineered 2-piece floating front rotors. Designed as a direct bolt-on replacement for the factory discs, these rotors deliver exceptional cooling, lighter weight, and fade-free performance without altering your car’s ABS or brake balance. Whether you drive daily or push hard on track, Girodisc rotors give you consistent, confident stopping power every time.
Lightweight Strength, Race-Bred Design
Machined and assembled entirely in the USA, Girodisc rotors combine aerospace-grade materials with motorsport engineering. The central hat is CNC-machined from 6061-T6 aluminum, anodized for long-term corrosion resistance. The iron rings are cast from Girodisc’s proprietary high-carbon alloy, featuring 48 curved directional vanes that pump cooling air through the disc like a centrifugal fan. This advanced ventilation dramatically improves heat dissipation, helping prevent fade and prolonging both rotor and pad life.
Girodisc A1-204 Vehicle Fitment
Kia Stinger GT (2018+)
Genesis G70 (3.3T and 2.0T Sport models, 2019+)
Features
Direct OEM Fitment: Installs using factory hubs and calipers—no modifications needed.
48-Vane Curved Design: Directional internal vanes force air through the rotor for consistent cooling and fade resistance.
Two-Piece Floating Construction: Reduces unsprung mass for sharper turn-in and suspension response.
Floating Mount System: High-strength steel pins and anti-noise washers allow heat expansion without rattle or vibration.
Replaceable Rings: Keep the aluminum hats—just replace the iron rings when worn to save on maintenance costs.
Made in the USA: Designed, cast, and machined in-house at Girodisc’s Washington facility for unmatched precision.
FAQs – Girodisc A1-204 Kia Stinger GT / Genesis G70 Front Rotors
Are these rotors a direct fit for OEM calipers? Yes. They bolt directly to the stock calipers and hubs with no modifications required.
Will these rotors improve braking feel? Definitely. Reduced weight and improved ventilation result in a firmer, more responsive pedal under repeated braking.
Are they suitable for both street and track use? Absolutely. Girodisc rotors are engineered for smooth street manners and outstanding track endurance.
Do they make any noise? No—the floating mount system uses anti-noise spring washers to prevent clatter or vibration.
Take control of every stop with Girodisc’s lightweight 2-piece floating rotors for the Kia Stinger GT and Genesis G70. Designed for precision, cooling, and reliability, they deliver confidence-inspiring braking performance on the road and at the limit.
GiroDisc Racing Brakes & Technologies
A1-217 Girodisc Hyundai Veloster N Front Rotors
$1,416.00
Hyundai Veloster N Front Rotors
Unlock the full braking potential of your Hyundai Veloster N with Girodisc’s lightweight 2-piece floating front rotors. Designed as a direct bolt-on replacement for factory discs, these rotors drop right in with no modifications required. They maintain your OEM brake balance and ABS tuning while delivering smoother pedal feel, faster heat recovery, and reduced fade during aggressive driving or track days.
Engineered for the Street and the Circuit
Built in the USA with precision and purpose, each Girodisc rotor combines aerospace-grade materials with motorsport design. The hat is CNC-machined from 6061-T6 aluminum for strength and weight savings, while the rotor rings are cast from Girodisc’s proprietary high-carbon iron alloy for superior heat resistance and stability. The curved internal vane structure draws cool air through the disc to regulate temperature, ensuring consistent braking performance lap after lap.
Vehicle Fitment
Hyundai Veloster N (2019-present)
Hyundai i30 N (international markets)
Features
Direct OEM Fitment: Bolts directly to factory hubs and calipers—no modifications or adapters needed.
Lightweight Two-Piece Design: Reduces unsprung and rotating mass for improved suspension response and braking consistency.
Curved Vane Ventilation: Directional internal vanes act as a centrifugal pump, maximizing cooling airflow under repeated heavy braking.
Floating Mount Hardware: Utilizes high-strength steel pins with anti-noise spring washers to allow precise expansion while remaining quiet.
Serviceable Construction: Replace the cast-iron rings when worn and reuse the anodized aluminum hats to reduce long-term cost.
Made in the USA: Designed, cast, and machined in-house under strict quality control.
FAQs – Hyundai Veloster N Front Rotors
Will these fit my factory Brembo calipers? Yes, they’re engineered to bolt directly to OEM Veloster N calipers with no adjustments required.
Do these rotors make noise? No—the floating system uses anti-rattle spring washers to keep them quiet under all conditions.
Can I daily drive with these? Absolutely. They’re quiet and smooth for daily use but strong enough for heavy track braking.
How much lighter are they than stock? The two-piece design saves several pounds per corner, improving turn-in and suspension compliance.
Enhance your Hyundai Veloster N with Girodisc’s 2-piece floating front rotors—built to stay cool, stop hard, and deliver confidence on every road and every track session.
GiroDisc Racing Brakes & Technologies
A1-309 Girodisc Audi with Brembo 18Z Front Rotors
$1,416.00
Girodisc Audi with Brembo 18Z Front Rotors
These Girodisc A1-309 two-piece front rotors are purpose-built for Audi models using the Brembo “18Z” 6-piston caliper (Cayenne/Q7/Touareg sourced). They bolt to the car and work with 18Z calipers while reducing unsprung weight and improving cooling versus one-piece rotors.
Vehicle Fitment
Audi S4 (B5) – Front, with Brembo 18Z caliper conversion
Audi A6 (C5) 2.7T – Front, with Brembo 18Z caliper conversion
Audi Allroad (C5) 2.7T – Front, with Brembo 18Z caliper conversion
Fitment note: Minor clearancing on the bottom of the upright is required on C5 chassis per Girodisc instructions. Will not fit C5 A6 4.2 V8, RS6, or Allroad 4.2 V8.
Lightweight, High-Flow Design
High-carbon iron rings with curved internal vanes act as a centrifugal pump to draw cooling air through the disc. Reusable 6061-T6 aluminum hats and cadmium-plated drive pins control thermal growth while keeping street noise in check.
Features
Direct fit for 18Z caliper swaps on B5 S4 / C5 2.7T (A6, Allroad)
Two-piece floating construction reduces unsprung weight
High-carbon rings, curved vanes for efficient cooling
Reusable aluminum hats; new hardware included
Manufactured and assembled in Bellingham, WA
Sold/priced per pair
A1-309 FAQs
Will these fit C5 4.2 V8 or RS6? No. These are for B5 S4 and C5 2.7T cars only when running 18Z calipers.
Is any modification needed? On C5 chassis, Girodisc specifies minor upright clearancing; a guide/video is provided.
Do I need different brake lines or brackets? No additional lines or brackets are required for standard 18Z swap geometry.
What rings do I use later? Use D1-309 front replacement rings.
Related Products
D1-309 Girodisc Audi with Brembo 18Z Front Replacement Rings
Recaro Holding GmbH
Recaro Pro Sim Star Simulator Seat
$1,416.00
Recaro Pro Sim Star
Bring the Road to Your Sim Rig!
This seat is neither FIA nor SFI approved, not for use in racing or competition.
Buckle up, Sim racers! With the Recaro Pro Sim Star, you’re not just racing — you’re really racing. Forget that old office chair, because this baby is a true Recaro automotive seat, designed to give you the ultimate immersive experience right in your living room. It's time to feel the rush, the G-force, the precision of every turn, all while sitting in a chair that’s not just a chair — it’s an icon.
With the Recaro Pro Sim Star, we’ve taken the real deal from the streets and tracks and dropped it straight into your sim rig. Yes, you heard that right — this isn’t some knockoff gaming chair; it’s a Recaro seat. You know, the kind you’d find in a high-performance sports car or race car. Now, it’s supporting you (literally) as you shave milliseconds off your lap times in the virtual world.
Why the Recaro Pro Sim Star?
Because real racers need real seats. Whether you’re tearing it up in iRacing or setting world records in Assetto Corsa, the Recaro Pro Sim Star is designed to hold your body in the perfect ergonomic position for hours of gameplay. No more slouching, no more sore backs – just total support and comfort as you immerse yourself in the action.
Here’s What Makes It Awesome
Real Recaro Automotive Seat. This isn’t just “inspired by” car seats—it is one. All the craftsmanship, all the iconic design, now in your Sim rig.
Ergonomic Brilliance. Keeps your body in the ideal racing position, which means better focus and less fatigue during those long stints.
Ultimate Comfort. With Recaro’s signature comfort features, you’ll be as comfortable at the end of the race as you were at the start.
Iconic Design. The Pro Sim Star looks as good as it feels. Sleek, stylish, and totally authentic — it’s a statement piece in any setup.
From the Road to Your Rig. It’s like sitting in a race car every time you power up your Sim.
Recaro Simstar Specifications
Materials: Real automotive-grade upholstery with Recaro stitching.
Dimensions: Perfectly designed for all Sim racing rigs.
Weight Capacity: Built to handle drivers of all sizes—just like in a real car.
Adjustability: Ergonomically engineered for comfort during extended sessions.
Recaro SimSTAR FAQs
Q: Is this an actual Recaro car seat?A: You bet it is! This isn’t some gaming imitation—it’s the real deal, just like what you’d find in a sports car or race vehicle. Authenticity, comfort, and style all in one package.
Q: Can I use this for long gaming sessions?A: Absolutely. In fact, that’s where it shines! The ergonomic design means you can race for hours without feeling uncomfortable or strained.
Q: Will this fit my Sim rig?A: The Recaro Pro Sim Star is designed to work with most Sim racing rigs. It’s got the dimensions and adjustability to fit right into your setup.
Q: What makes Recaro seats so special?A: Recaro seats are famous for their ergonomic design, build quality, and the kind of comfort that can make even the toughest race enjoyable. These are the same seats you find in high-performance cars, now available for your Sim rig.
Ready to take your Sim racing to the next level? The Recaro Pro Sim Star is waiting for you. Don’t settle for anything less than the best—get the authentic racing experience today and make every lap unforgettable.
Click Add To Cart and feel the difference that only Recaro can deliver!
Recaro Holding GmbH
Recaro Flexible Side Mount (XL) 7206293NA FIA Approved
$1,416.00
Recaro Flexible Side Mount for XL Size Seats FIA Approved
This Kit Fits the Following Seats:
Recaro Pro Racer SPA XL
Recaro Pro Racer SPG XL
FIA Approved Racing Seat Flexibility
The Recaro Flexible Adapter bracket for the P 1300 GT advanced racing shell gives your Recaro full forward and backward sliding movement. The Recaro Flexible Adapter is the only FIA approved sliding mounting bracket for the Recaro XL racing seat. It was designed by Recaro specifically for endurance races where driver changes need to be done in seconds.
The Recaro Flexible Adaptor seat mount is among the most robustly design slider mounts we've ever seen. The Flexible Adapter mount is a reinforced side mount and slider assembly intended for professional endurance racing. This FIA-certified seat slider has extra reinforcing braces on the front and rear which eliminate a lot of the lateral movement seen in traditional, un-reinforced side mount brackets. This Recaro high strength seat slider/mount combination is just the thing to keep you planted firmly in place. Even the bright red, attention-grabbing slider hand bar is overbuilt.
This slider and mount system only works with the Recaro XL-size seats. Check out the standard-size version here.
See the Recaro Flexible Adapter Side Mount in Action
Recaro racing seat (pictured) sold separately.
GiroDisc Racing Brakes & Technologies
A2-149 Girodisc Audi B8, B9 RS5 Rear Rotors
$1,416.00
Girodisc Audi B8, B9 RS5 Rear Rotors
Developed for the demanding braking systems found on Audi’s RS5, these Girodisc rear rotors combine precision engineering with reduced unsprung weight for sharper response and superior heat control. The two-piece design enhances durability and cooling efficiency while maintaining full compatibility with factory calipers and ABS systems.
Vehicle Fitment
Audi RS5 (B8, 2013–2015)Audi RS5 (B9, 2018–2023)Compatible with OEM Brembo rear calipers and factory hardware.
Performance Engineering for Track and Street
The Girodisc system is a direct bolt-on replacement for the OEM rotors—no modifications required. Each rotor features a lightweight 6061-T6 aluminum hat paired with Girodisc’s proprietary cast-iron friction ring. The floating two-piece design allows for natural expansion under extreme heat, maintaining consistent pad contact and brake feel. Curved internal vanes pull cooling air through the disc, greatly improving temperature management during spirited or track driving.
Features
• Direct OEM replacement – no modifications required• Billet 6061-T6 aluminum hats with anodized finish• Proprietary cast-iron rings, cast and machined in the USA• Floating mount system with 10 cadmium-plated drive pins• Anti-noise spring washers eliminate rattle and maintain float• Curved vane design increases airflow for optimal cooling• Lightweight two-piece construction reduces unsprung mass• Fully rebuildable—replace only the iron rings when worn• Sold/priced per pair
Girodisc A2-149 Rear Rotor FAQs:
Are these rotors compatible with both B8 and B9 RS5 models? Yes. Girodisc designed the A2-149 rotors to fit both generations using the OEM Brembo rear brake setup.
What benefits will I notice compared to factory rotors? You’ll experience reduced fade, better cooling under sustained braking, and improved suspension response due to lower unsprung weight.
Do these rotors work with stock pads? Yes. They’re fully compatible with OEM or performance pad compounds designed for iron rotors.
Are they suitable for street use? Absolutely. Girodisc rotors deliver smooth, quiet operation on the street with the thermal stability needed for track sessions.
Enhance your Audi RS5’s braking precision and performance with Girodisc rear rotors—lightweight, rebuildable, and purpose-built for consistent, confidence-inspiring stops.
CMS Performance
CMS Performance Deluxe Harness Bar For C8 Corvette
$1,416.00
CMS Performance Deluxe Bolt-In Harness Bar For C8 Corvette
This Harness Bar Fits the Following Cars:
2020+ Chevrolet Corvette Stingray (C8)
2023+ Chevrolet Corvette Z06 (C8)
Does not fit Convertible or Roadster
Click Here For Installation Instructions
The Best C8 Corvette Harness Bar in the World
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 a 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 Deluxe Harness Bar. Featuring the same rock-solid, high-strength design as our standard C8 Harness Bar, the Deluxe bar adds an innovative "main hoop" design, giving it a more aggressive look. This also gives you a place to mount an in-car motorsports video camera, like the AiM Sports SmartyCam GP HD. Of course, it provides high-strength mounting points for your harness shoulder straps to keep you firmly and safely in your seat.
The C8 Deluxe Harness Bar is the strongest, most elegantly designed C8 harness bar on the market. It seamlessly integrates into your C8 interior, preserves your rear view, and gives the C8 a big bump in cool factor, especially with a custom powder-coat color! The CMS C8 Deluxe Harness 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 no modification of your upper center console trim. Some modification of your B-pillar lock/seat belt trim panels is required.
Corvette C8 Deluxe Harness Bar is Made in the USA
Every CMS C8 Deluxe 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).
Add The Best Harnesses For The C8 Corvette
Add optional four-point Sabelt Silver Series or Schroth Profi II ASM four-point harnesses along with the CMS Performance Harness Install Kit, and your C8 Corvette is ready to hit the track with significantly upgraded 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 Deluxe 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: 24 lbs. (10.9 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.
GiroDisc Racing Brakes & Technologies
A1-171 Girodisc 2pc Front Brake Rotors
$1,416.00
VW / Audi MQB 340mm Front Rotors (Girodisc A1-171)
The Girodisc 340mm Front Rotor set for VW and Audi MQB-platform cars delivers a precise, high-performance upgrade over factory rotors without the cost or complexity of a full big brake kit. Each rotor is a direct bolt-on replacement that retains full compatibility with factory calipers and brake bias, while reducing both rotational and unsprung mass for sharper handling and improved acceleration.
Precision-Engineered Two-Piece Design
Weighing approximately 20.3 lbs each compared to 23.8 lbs for the OEM rotors, this Girodisc system reduces weight exactly where it matters. The central hat is CNC-machined from U.S.-sourced 6061-T6 aircraft-grade aluminum, paired with Girodisc’s proprietary cast iron rotor ring poured and machined entirely in the USA. The rotor’s curved vane internal design acts as a centrifugal pump, forcing cooling air through the rotor to maintain consistent braking under high temperatures.
Vehicle Fitment
This 340mm Girodisc rotor set fits a wide range of MQB-platform VW and Audi vehicles, including:
Volkswagen Golf R (MK7 / MK7.5)
Volkswagen GTI Performance Package / Clubsport
Volkswagen GTI TCR
Audi S3 (8V)
Audi TT-S (8S)
Audi A3 with 340mm front brakes
If you are unsure of compatibility, please verify your vehicle’s factory rotor size before ordering.
Features
- Direct replacement for OEM 340mm rotors; no adapters or spacers required.
- Two-piece floating rotor design reduces unsprung and rotational weight.
- Proprietary cast iron friction rings with 6061-T6 aluminum hats for high heat resistance and rigidity.
- Curved vane internal design promotes effective cooling airflow.
- Floating mount system with ten high-strength alloy steel drive pins allows precise axial and radial float.
- Anti-noise spring washers eliminate rattle during street use while maintaining performance under heat expansion.
- Cadmium-plated hardware for long-lasting corrosion protection.
- Fully manufactured in the USA to motorsport standards.
Specifications
Rotor Diameter: 340mmWeight: 20.3 lbs (each)OEM Rotor Weight: 23.8 lbs (each)Rotor Type: Two-piece floatingMaterial: Proprietary cast iron with 6061-T6 aluminum hatHardware: 10 alloy steel drive pins with spring washersSold as: Pair (left and right front rotors)
FAQs: VW / Audi MQB 340mm Front Rotors (Girodisc)
Do these rotors require caliper modifications? No, these are direct bolt-on replacements that retain factory calipers and brake pads.
How do these rotors improve braking performance? They reduce rotating mass, improve cooling efficiency, and maintain more consistent braking under high temperature conditions.
Are they noisy during normal driving? The anti-noise spring washers prevent rattle and vibration while preserving the floating design benefits during spirited or track use.
What maintenance is required? Only the cast iron friction rings need replacement when worn. The aluminum hats and hardware are reusable per Girodisc’s service recommendations.
Ordering Information
Sold and priced per pair. Includes left and right Girodisc 340mm front rotors for VW and Audi MQB-platform vehicles.
Would you like all future CMS Girodisc listings to include this standalone “Vehicle Fitment” section automatically right after the intro (before Features)?
Features
- Direct replacement for the OEM 340mm front discs; no modifications or adapters required.
- Two-piece floating construction for reduced unsprung weight and faster suspension response.
- 6061-T6 aluminum hat and proprietary cast iron rotor ring for optimal strength and heat management.
- Curved vane design improves airflow and cooling efficiency during repeated heavy braking.
- Floating mount system with ten high-strength alloy steel drive pins allows axial and radial float to reduce stress and distortion.
- Spring washers eliminate the rattle typically associated with floating rotors while allowing thermal expansion.
- Class 12.9 hardware and cadmium-plated pins resist corrosion for long-term durability.
- Designed, cast, and machined entirely in the USA to Girodisc’s exacting motorsport standards.
Specifications
Rotor Diameter: 340mmWeight: 20.3 lbs (each)OEM Rotor Weight: 23.8 lbs (each)Rotor Type: Two-piece floatingMaterial: Proprietary cast iron with 6061-T6 aluminum hatHardware: 10 alloy steel drive pins with spring washersFitment: VW / Audi MQB-platform vehicles with 340mm front brakesSold as: Pair (left and right front rotors)
FAQs: VW / Audi MQB 340mm Front Rotors (Girodisc)
What vehicles are these rotors compatible with? These fit VW and Audi MQB-platform vehicles equipped with 340mm front brakes, such as the Golf R, GTI Performance Pack, Audi S3, and other compatible models.
Do these rotors require caliper spacers or new pads? No, they are a direct bolt-on replacement that uses your existing calipers and OEM pad shape.
How do these improve braking performance? The Girodisc system reduces weight, improves airflow through the curved vane design, and enhances temperature stability for better consistency under heavy braking.
Are they noisy during street driving? No. The floating pins are mounted with anti-noise spring washers that eliminate rattle while maintaining full float functionality under heat.
How is maintenance handled? Once installed, only the cast iron rings need to be replaced when worn. The aluminum hats and hardware can be reused following Girodisc service recommendations.
Ordering Information
Sold and priced per pair. Includes left and right front Girodisc 340mm rotors for VW and Audi MQB vehicles. Direct bolt-on fit with OEM calipers.
GiroDisc Racing Brakes & Technologies
A1-169 Girodisc 2pc Front Brake Rotors for Ford Focus RS
$1,416.00
Focus RS Front Rotors (Girodisc A1-169)
The Girodisc Front Rotor set for the Ford Focus RS offers a precision-engineered upgrade over the factory rotors, delivering improved heat management, reduced unsprung weight, and exceptional durability. Designed as a direct replacement for the OEM discs, these rotors bolt on with no modifications required, maintaining the factory brake bias and ABS performance while enhancing responsiveness and acceleration.
Vehicle Fitment
This Girodisc front rotor set is designed specifically for:
Ford Focus RS (2016–2018)
Fits directly to the factory calipers and hubs with no adapters or modifications required.
Performance and Design
Each Girodisc rotor weighs approximately 18.0 lbs compared to the OEM 23.1 lbs, reducing rotating and unsprung mass for improved handling, acceleration, and suspension control. The two-piece floating rotor design features a central hat machined from U.S.-sourced 6061-T6 aircraft-grade aluminum paired with a proprietary cast iron friction ring, both developed and machined in the USA. The 48 curved directional vanes act as a centrifugal pump, drawing cooling air through the rotor to manage heat during heavy braking.
Girodisc A1-169 Features
- Direct bolt-on replacement for OEM rotors; no modifications required.
- Two-piece floating rotor design reduces unsprung and rotational mass for sharper handling.
- 6061-T6 aluminum hat and proprietary cast iron rotor ring deliver strength and heat dissipation.
- 48 curved directional vanes promote superior cooling under track and spirited driving conditions.
- Floating mount system with 8–10 high-strength alloy steel drive pins allows for axial and radial float.
- Anti-noise spring washers minimize rattle while maintaining free thermal expansion of the disc.
- Grade 12 hardware and cadmium-plated pins ensure long-term corrosion resistance.
- Maintains factory ABS and brake bias for consistent braking performance.
- Designed, cast, and machined entirely in the USA to motorsport-level tolerances.
Specifications
Rotor Type: Two-piece floatingVane Count: 48 curved directionalWeight: 18.0 lbs each (stock 23.1 lbs)Material: Proprietary cast iron with 6061-T6 aluminum hatHardware: 8–10 alloy steel drive pins with anti-noise spring washersFitment: Ford Focus RS (2016–2018)Sold as: Pair (left and right front rotors)
FAQs: Ford Focus RS Front Rotors (Girodisc)
Do these rotors work with the OEM calipers? Yes, they are a direct replacement and bolt on using the stock calipers without any modifications.
What are the main performance benefits? Reduced unsprung weight and improved thermal management result in quicker acceleration, sharper handling, and more consistent braking during aggressive driving or track use.
Are these rotors noisy during daily driving? No. The spring washers eliminate the rattle commonly found in floating rotors while still allowing full thermal float.
Can the rotors be rebuilt? Yes. Once installed, only the iron rings need to be replaced when worn, while the aluminum hats and hardware can be reused according to Girodisc’s service guidelines.
Ordering Information
Sold and priced per pair. Includes left and right Girodisc 2-piece floating front rotors for the 2016–2018 Ford Focus RS.
GiroDisc Racing Brakes & Technologies
A2-179 Girodisc VW, Audi MQB Rear Rotors
$1,416.00
Girodisc VW, Audi MQB Rear Rotors
Upgrade your VW or Audi MQB platform with Girodisc’s lightweight two-piece rear rotors, engineered for superior cooling, reduced unsprung mass, and enhanced braking feel. These rotors are a direct OEM replacement requiring no modifications—simply bolt on and enjoy race-proven performance with street-friendly refinement.
Precision-Built Performance for MQB Platforms
The Girodisc system is designed to maintain perfect factory brake bias and ABS operation while offering substantial weight savings. Each rotor features a U.S.-sourced 6061-T6 aluminum hat and Girodisc’s proprietary cast iron friction ring. The two-piece floating design allows the rotor to expand under heat without distortion, ensuring consistent performance in aggressive driving or track conditions.
Features
• Direct OEM replacement for MQB rear rotors – no modifications required• Weighs approximately 12.9 lbs vs. 15 lbs for factory rotors• CNC-machined 6061-T6 billet aluminum hats with anodized finish• Proprietary cast iron rings cast and machined entirely in the USA• Floating mount system with 10 cadmium-plated steel drive pins• Anti-noise spring washers eliminate rattle while maintaining float• Curved vane internal design enhances cooling efficiency• Fully rebuildable—replace only the rotor rings when worn
Vehicle Fitment
Volkswagen Golf R (Mk7 & Mk7.5, 2015–2021)Volkswagen GTI (Mk7 & Mk7.5, Performance Package, 2015–2021)Audi S3 (8V, 2015–2020)Audi TT / TTS (Mk3, 2016–2021)All vehicles based on the MQB platform with factory performance brake systems.
Girodisc A2-179 Rear Rotor FAQs:
What does “MQB” mean? MQB is the shared Volkswagen Group platform used for performance models like the Golf R, GTI, and Audi S3—these rotors are designed specifically for those cars.
Do these rotors require aftermarket calipers? No. They are a direct fit with OEM calipers and factory hardware.
How much lighter are Girodisc rotors than OEM? Each rotor saves over 2 lbs of unsprung and rotational weight, improving handling and acceleration response.
Are Girodisc rotors suitable for daily driving? Yes. While designed for high performance, they provide quiet, smooth operation on the street with superior heat management for track use.
Boost your MQB platform’s braking capability with Girodisc’s rear rotors—crafted for enthusiasts who demand lightweight, high-performance braking that performs on both street and circuit.
GiroDisc Racing Brakes & Technologies
A2-130 Girodisc Audi B8/B9 Rear Rotors
$1,416.00
A2-130 Girodisc Audi B8/B9 Rear Rotors
Girodisc A2-130 two-piece rear rotors are a direct, bolt-on upgrade for Audi B8 and B9 chassis using the 330 mm rear rotor package. The floating design preserves parking brake function while cutting unsprung weight and improving cooling.
Vehicle Fitment
Audi S4 (B8/B9) – Rear
Audi S5 (B8/B9) – Rear
Audi SQ5 (B8/B9) – Rear
Stable Performance Under Heat
High-carbon iron rings with curved vanes pull air through the disc for efficient heat rejection, while reusable 6061-T6 hats keep long-term service costs down.
Features
Direct OE replacement; no modifications required
Two-piece floating construction
High-carbon rings with curved internal vanes
Reusable aluminum hats; cadmium-plated hardware
Manufactured and assembled in Bellingham, WA
A2-130 FAQs
Parking brake? Fully compatible; hat offset maintains OE parking brake operation.
Noise? Spring-preloaded hardware minimizes rattle during street use.
Rear ring part number? D2-130 rear replacement rings.
GiroDisc Racing Brakes & Technologies
A1-053 Girodisc Audi B5 S4 with Alcon, StopTech BBK Front Rotors
$1,416.00
Audi B5 S4 with Alcon, StopTech BBK Front Rotors
Replace your aging or discontinued Stasis/Alcon rotors with precision-engineered Girodisc two-piece floating front rotors for the Audi B5 S4. These rotors are a complete replacement for the original hat and rotor assembly used in the 355x32mm Alcon or StopTech big brake kits, eliminating the need to chase rare or discontinued components. Designed for enthusiasts who demand top-tier braking control, Girodisc rotors combine advanced materials and race-proven design for consistent, fade-free performance.
Engineered for Performance and Compatibility
The Girodisc system bolts directly to your existing Alcon or StopTech calipers with no modifications required. Built from U.S.-sourced materials, each rotor features 6061-T6 aluminum hats mated to proprietary high-carbon cast iron rings. The result is a lighter, stronger, and more thermally stable rotor designed to handle extreme heat and repeated heavy braking without compromise.
Vehicle Fitment
• 2000–2002 Audi S4 (B5) with Alcon or StopTech 355x32mm BBK• 1998–2004 Audi A6 (C5) 2.7TT with Alcon or StopTech BBK• 2001–2005 Audi Allroad 2.7TT with Alcon or StopTech BBK***Does not fit RS6 or 4.2L V8 models.***
Features
• Direct-fit replacement for Alcon and StopTech 355x32mm kits• 6061-T6 aluminum hats machined in the USA• Proprietary high-carbon iron rotor rings with curved vane internal cooling• Floating mount system with anti-noise spring washers• Lightweight two-piece design for improved handling and cooling• Sold/priced per pair
Audi B5 S4 Front Rotor FAQs:
Do these fit OEM brakes? No, these rotors are only for cars equipped with Alcon or StopTech 355x32mm big brake kits.
Can these replace discontinued Stasis parts? Yes, they’re a direct replacement for the now-defunct Stasis/Alcon rotor setup.
Are the hats reusable? Yes, Girodisc offers replacement rings so you can reuse the aluminum hats for future rebuilds.
Will they improve braking performance? Absolutely—reduced unsprung mass, enhanced cooling, and consistent heat dissipation provide track-ready stopping confidence.
Upgrade your Audi’s braking system with Girodisc precision rotors—made for enthusiasts who demand reliability, performance, and uncompromising quality.