GiroDisc Racing Brakes & Technologies
A1-067 Girodisc Ford S550 Mustang (w/ Brembo) Front Rotors
$1,150.00
Ford S550 Mustang Front Rotors
Take the already impressive stopping power of your Mustang GT, Bullitt, or Mach 1 to the next level with Girodisc two-piece floating front rotors. Designed specifically for the 380mm Brembo-equipped S550 platform, these rotors deliver the heat management and performance edge needed for street, autocross, and track-day driving—without altering OEM fitment or balance.
Performance You Can Feel
The Girodisc system is a direct bolt-on replacement that works perfectly with factory six-piston Brembo calipers. Each rotor weighs in at approximately 24.1 lbs, shedding nearly 10 lbs per corner compared to the stock setup. This reduction in rotational mass improves steering response, suspension behavior, and overall braking consistency under hard use.
Girodisc A1-067 Vehicle Fitment
• 2015–2023 Ford Mustang GT (Performance Package, Brembo 6-piston)• 2019–2020 Ford Mustang Bullitt• 2021–2023 Ford Mustang Mach 1
Features
• 380mm x 34mm rotor—direct OE replacement• 6061-T6 aluminum hat, made in the USA• Proprietary cast iron disc with 72 internal curved vanes for superior cooling• Floating mount system with anti-noise spring washers• Roughly 9 lbs lighter per side than OEM rotors• Sold/priced per pair
Ford S550 Mustang Front Rotor FAQs:
Are these rotors a direct fit? Yes, they bolt right onto the factory six-piston Brembo setup without modification.
Do they require different brake pads? No, you can use your existing pads, though performance compounds are recommended for track use.
How do Girodisc rotors improve performance? The reduction in unsprung weight and advanced vane design improve both cooling and response during repeated hard braking.
Are replacement rings available? Yes, replacement rings are sold separately so you can reuse the aluminum hats when needed.
Upgrade your Mustang’s stopping confidence with Girodisc—precision-engineered rotors that balance track performance with daily drivability.
GiroDisc Racing Brakes & Technologies
A2-147 Girodisc Corvette C7 Z06, Grand Sport Rear Rotors
$1,150.00
Girodisc Corvette C7 Z06, Grand Sport Rear Rotors
Engineered for the intense braking demands of high-performance Corvettes, the Girodisc rear rotors for the C7 Z06 and Grand Sport offer a lighter, stronger, and more temperature-stable solution than factory rotors. Each rotor is designed to bolt directly to OEM hubs and calipers, delivering consistent performance and improved cooling for aggressive street or track use.
Vehicle Fitment
Chevrolet Corvette C7 Z06 (2015–2019)Chevrolet Corvette C7 Grand Sport (2017–2019)Compatible with OEM Brembo rear calipers and hardware.
Performance-Built Two-Piece Design
The Girodisc system replaces the factory one-piece rotor with a lightweight two-piece assembly featuring a CNC-machined 6061-T6 aluminum hat and a proprietary cast-iron friction ring. The design sheds roughly 8 lbs per corner (24.7 lbs stock vs. 16.6 lbs Girodisc), reducing unsprung and rotational mass for sharper handling and faster acceleration. Internal curved vanes act as centrifugal pumps to draw cooling air through the disc, maintaining stable temperatures even under heavy braking.
Features
• Direct replacement for OEM rear rotors—no modifications required• 6061-T6 billet aluminum hats with anodized finish• Proprietary high-carbon cast-iron friction rings, cast and machined in the USA• Floating mount system with 10 cadmium-plated steel drive pins• Anti-noise spring washers eliminate rattle and maintain float• Curved internal vanes for efficient airflow and cooling• 8.1 lbs lighter per rotor than OEM for reduced unsprung weight• Fully rebuildable—replace only the rotor rings when worn• Sold/priced per pair
Girodisc A2-147 Rear Rotor FAQs:
How much lighter are Girodisc rotors than OEM? Each rear rotor saves approximately 8 lbs compared to the factory setup, improving suspension compliance and overall handling response.
Do these work with factory brake pads and calipers? Yes. The rotors bolt directly to the OEM hubs and work perfectly with stock or performance pad compounds designed for iron rotors.
What improvements will I notice on track? Expect faster brake recovery, consistent pedal feel, and reduced fade during extended high-speed braking thanks to the floating two-piece design and improved cooling.
Are these suitable for daily driving? Absolutely. Girodisc rotors maintain smooth, quiet operation while offering race-level performance when pushed hard.
Unlock the full braking potential of your C7 Z06 or Grand Sport with Girodisc rear rotors—precision-crafted for lighter weight, better cooling, and true motorsport performance.
GiroDisc Racing Brakes & Technologies
A2-006 Girodisc Dodge Viper ('03+) Rear Rotors
$1,150.00
Girodisc Dodge Viper ('03+) Rear Rotors
Enhance the braking performance of your Dodge Viper with Girodisc lightweight two-piece rear rotors. Engineered as a direct OEM replacement, these precision-built rotors reduce unsprung weight, improve cooling, and deliver more consistent braking performance whether on the street or at the track. Perfect for Viper owners who demand top-tier stopping power and thermal control without altering factory balance or ABS calibration.
Vehicle Fitment
Compatible with:• Dodge Viper SRT-10 (2003–2010)• Dodge Viper SRT GTS & ACR (2013–2017)Direct OEM replacement – bolts to factory hubs and calipers with no modifications required.
Performance You Can Feel
The Girodisc system replaces the factory one-piece rotors with a floating two-piece design that minimizes unsprung mass and maximizes cooling efficiency. Each aluminum hat is CNC-machined from U.S.-sourced 6061-T6 aircraft-grade aluminum and hard-anodized for strength and corrosion resistance. The iron rings are Girodisc’s proprietary cast alloy—poured, heat-treated, and machined entirely in the USA. Curved directional vanes inside each disc act as centrifugal pumps, pulling air through the rotor for superior temperature control under high-performance use.
Features
• Direct OEM replacement for Dodge Viper rear rotors ('03 and newer)• Lightweight two-piece floating rotor assembly• CNC-machined 6061-T6 aluminum hats with hard-anodized finish• Proprietary cast-iron friction rings for improved heat stability• Curved vane design enhances airflow and cooling• 5–6 lbs lighter per rotor than OEM (18 lbs vs. 24.5 lbs)• Cadmium-plated steel drive pins resist corrosion• Anti-noise spring washers eliminate rattle and vibration• Maintains factory brake bias and ABS operation• Fully rebuildable – replace only the iron rings when needed• Made in the USA• Sold/priced per pair
Girodisc A2-006 Rear Rotor FAQs:
Are these rotors a direct fit for the Viper? Yes. The A2-006 Girodisc rotors bolt directly to OEM hubs and calipers with no modifications required, maintaining full compatibility with factory brake components.
How much weight savings can I expect? Each Girodisc rotor is roughly 5–6 lbs lighter than the stock unit—reducing rotational mass and improving suspension response for sharper handling and acceleration.
Will these rotors work for track use? Absolutely. Girodisc’s two-piece floating design is built for sustained high-temperature operation and delivers consistent, fade-free braking even in the most demanding conditions.
Do I need to change pads with these rotors? Not necessarily. The rotors are compatible with OEM pads or any high-performance aftermarket compound, though a fresh pad set is always recommended when installing new rotors for optimal performance.
Upgrade your Dodge Viper’s braking system with Girodisc two-piece rear rotors—precision-built for reduced weight, superior cooling, and unmatched reliability under any driving conditions.
GiroDisc Racing Brakes & Technologies
A1-039 Girodisc Chevrolet Camaro SS (5th Gen) Front Rotors
$1,150.00
Chevrolet Camaro SS (5th Gen) Front Rotors
Unlock the full braking potential of your 5th Gen Camaro SS with Girodisc’s two-piece floating front rotors—crafted to deliver lighter weight, improved cooling, and uncompromised OEM fitment. Designed for drivers who demand better response and durability without altering brake bias or ABS operation, these rotors are the ultimate upgrade for street and track performance.
Race-Bred Engineering for Street Precision
Each Girodisc rotor is precision-machined in the USA from proprietary high-carbon cast iron and paired with a 6061-T6 aircraft-grade aluminum hat. The floating mount system with anti-noise spring washers allows the rotor to expand and contract with heat cycles, eliminating rattle and ensuring smooth operation. The curved vane internal design actively pumps air through the rotor, enhancing cooling efficiency under extreme braking loads.
Vehicle Fitment
• 2010–2015 Chevrolet Camaro SS (6.2L V8)• Compatible with factory Brembo front calipers
Girodisc A1-039 Features
• Direct bolt-on replacement for OEM rotors• Two-piece floating design reduces unsprung and rotational weight• U.S.-sourced 6061-T6 aluminum hats• Proprietary cast iron with curved internal vanes for maximum cooling• Floating drive pin system with anti-noise spring washers• Enhanced fade resistance and pedal feel• Sold/priced per pair
Camaro SS Front Rotor FAQs:
Are these compatible with factory Brembos? Yes, they are designed to work perfectly with the OEM Brembo calipers on the 5th Gen Camaro SS.
Will they improve braking performance? Definitely. Reduced unsprung weight and better cooling deliver faster response and reduced fade.
Can they handle track use? Yes, Girodisc rotors are track-proven and ideal for spirited driving or HPDE events.
Can I replace just the rings later? Yes, replacement rings are available—simply reuse your aluminum hats for a cost-effective refresh.
Take your Camaro SS braking to the next level with Girodisc’s proven two-piece rotor design—engineered for precision, endurance, and performance you can feel.
GiroDisc Racing Brakes & Technologies
A1-152 Girodisc 2pc Front Brake Rotors for Audi TT RS (380mm)
$1,150.00
Audi TT RS (8J) Front Rotors
The Girodisc Front Rotors for the Audi TT RS (8J) are engineered to deliver superior braking performance and reduced weight compared to the factory setup. Designed as a direct replacement for the OEM rotors, this lightweight two-piece system improves stopping consistency, acceleration, and suspension response without altering factory brake balance or ABS calibration.
Lightweight Direct Replacement Rotors
The Girodisc system bolts directly to your Audi TT RS without any modifications. By replacing the heavy factory rotors with high-performance two-piece units, you retain the car’s stock brake bias and ABS efficiency while enjoying reduced rotational and unsprung mass. Each Girodisc front rotor weighs approximately 19.8 lbs compared to 26.6 lbs for the OEM version — saving nearly 7 lbs per corner for sharper handling and quicker throttle response.
Vehicle Fitment
These Girodisc Front Rotors are designed specifically for:
Audi TT RS (8J) — All model years equipped with OEM front brakes
Features
The central hat section is crafted from U.S.-sourced 6061-T6 aircraft-grade aluminum for strength and lightness. The rotor rings are made from Girodisc’s proprietary cast iron, poured and precision-machined entirely in-house in the USA. Each disc uses a curved vane design developed through motorsport testing to act as a centrifugal pump, drawing cooling air through the rotor to lower temperatures and reduce fade.
The floating mount system connects the rotor ring to the aluminum hat using 8 or 10 high-strength alloy steel drive pins, cadmium plated for corrosion resistance. These pins are secured with grade 12 cap screws and hardened washers for maximum durability. Anti-noise spring washers allow for thermal expansion while eliminating rattle, ensuring smooth, quiet operation both on the street and track. The floating design also allows the rotor to self-center between pads, maintaining consistent brake feel under all conditions.
Once installed, the Girodisc system makes future maintenance simple — only the cast iron rotor rings need replacement when worn, while the aluminum hats can be reused for years of service.
FAQs: Audi TT RS (8J) Front Rotors
Do these rotors fit my Audi TT RS without modifications? Yes, the Girodisc system is a direct bolt-on replacement for OEM rotors and works perfectly with factory calipers.
How much lighter are these than stock? Each Girodisc rotor is approximately 7 lbs lighter per corner than the OEM rotors, improving acceleration and suspension performance.
Are these suitable for track use? Absolutely. The Girodisc rotors are engineered to withstand high temperatures and repeated heavy braking while maintaining excellent pedal feel and durability.
What makes the Girodisc rotors different from other aftermarket options? Girodisc rotors are fully machined in the USA from proprietary cast iron and use aircraft-grade aluminum hats for optimal strength-to-weight ratio and long-term reliability.
Do I need to change my brake pads? You can continue using your factory pad shape or upgrade to high-performance compounds — Girodisc rotors are compatible with all OEM-spec pads.
Upgrade your Audi TT RS braking system with Girodisc Front Rotors and experience lighter, stronger, and more consistent stopping performance engineered for both street and track use.
GiroDisc Racing Brakes & Technologies
A1-091 Girodisc Ford S197 Mustang GT500 ('13–14) Front Rotors,
$1,150.00
Ford S197 Mustang GT500 Front Rotors
Unleash the full stopping power of your 2013–2014 Shelby GT500 with Girodisc 2-piece 72-vane front rotors—purpose-built for high-performance Mustangs. These rotors are a direct OEM replacement, engineered to bolt right up to your factory calipers with zero modifications. With a massive weight savings of nearly 10 lbs per rotor, they dramatically reduce rotational and unsprung mass for quicker acceleration, sharper turn-in, and improved suspension response.
Machined in the USA from U.S.-sourced materials, the Girodisc system pairs a precision 6061-T6 aluminum hat with a proprietary cast-iron rotor ring featuring 72 curved internal vanes. This advanced cooling design acts like a centrifugal pump, pulling air through the rotor to dissipate heat and prevent brake fade during high-speed use—ideal for aggressive street driving and track days alike.
Race-Ready Braking for the Shelby GT500
Vehicle Fitment
Ford Mustang GT500 (2013–2014, 5.8L Trinity engine only)
Girodisc A1-091 Features
Direct OEM replacement: Bolts directly to factory calipers—no modifications required.
Significant weight savings: 22.3 lbs per rotor vs. 31.8 lbs stock for faster response and handling.
72-vane cooling system: Advanced curved vane design maximizes airflow and cooling efficiency under heavy braking.
Floating 2-piece design: Prevents warping and ensures consistent pad contact during extreme heat cycles.
Made in the USA: 100% designed, machined, and assembled in-house by Girodisc.
Specifications
Weight: 22.3 lbs per rotor
Construction: 2-piece aluminum hat with high-carbon iron rotor
Cooling: 72 internal curved vanes
Fitment: 2013–2014 Mustang GT500 (5.8L)
Girodisc A1-091 FAQs
Will these fit my GT500? Yes. These are specifically designed for the 2013–2014 Shelby GT500 with the 5.8L Trinity engine.
Are they lighter than OEM rotors? Absolutely. Each rotor saves nearly 10 lbs, reducing unsprung and rotational mass.
Do I need any modifications? No. They bolt directly to your existing calipers and hardware.
Are they suitable for track use? Yes. The 72-vane internal cooling system delivers exceptional fade resistance for track or spirited street driving.
How are they sold? Sold and priced per pair.
Enhance your GT500’s braking performance with Girodisc 2-piece rotors—engineered for cooler operation, lighter weight, and race-proven durability.
GiroDisc Racing Brakes & Technologies
A1-006 Girodisc Dodge Viper (2003+) Front Rotors
$1,150.00
Girodisc Dodge Viper (2003+) Front Rotors
The Girodisc system is a direct replacement for the OEM front rotors on 2003 and newer Dodge Vipers equipped with the standard 355mm brake setup. Weighing only 18.4 lbs per rotor, these lightweight 2-piece floating assemblies significantly reduce unsprung and rotational mass, improving acceleration, steering response, and suspension dynamics. This upgrade maintains factory brake bias and ABS functionality while enhancing cooling and fade resistance for high-performance driving.
Precision Engineering
The rotor rings are machined from Girodisc’s proprietary high-carbon iron alloy, cast and processed entirely in-house in Bellingham, Washington. This advanced metallurgy ensures exceptional durability, thermal stability, and consistent braking under extreme conditions. Each rotor features 48 curved directional vanes designed to draw cooling air through the hub like a centrifugal pump, keeping temperatures stable even during heavy track use.
Girodisc A1-006 Features
Direct bolt-on replacement for OEM 355mm rotors – no modifications required
Two-piece floating design reduces unsprung and rotational mass
6061-T6 aluminum hats anodized for long-term corrosion resistance
High-carbon cast iron rotor rings machined to Girodisc specifications
48 curved vanes improve heat dissipation and braking consistency
Cadmium-plated drive pins with Belleville washers for silent operation
Fully rebuildable – replace iron rings while retaining hats and hardware
Made in the USA from domestically sourced materials
Vehicle Fitment
Dodge Viper (2003+)
Models equipped with standard 355mm front brakes
Technical Specifications
Part Number: A1-006
Position: Front
Diameter: 355mm
Thickness: 32mm
Weight: 18.4 lbs per rotor
Minimum Thickness: 30mm
Rotor Type: Two-piece floating
Hat Material: 6061-T6 aluminum (black anodized)
Disc Material: Girodisc proprietary high-carbon cast iron
Vane Design: 48 curved directional vanes
Drive Pins: High-strength steel alloy, cadmium-plated
Sold/Price: Per pair
FAQs for Girodisc A1-006
Do these fit directly on the 2003+ Dodge Viper? Yes. They are designed as a direct bolt-on replacement for the OEM 355mm front rotors—no additional modifications required.
Can I replace just the rings? Yes. The Girodisc rotors are fully rebuildable. Replacement rings (part number GD355.32.52) are available separately.
Will they make noise during normal street use? No. Each rotor assembly uses Belleville washers and spring clips to eliminate rattles while maintaining proper float.
Are they suitable for track days? Absolutely. The Girodisc system offers superior cooling, reduced fade, and better heat management than OEM rotors, making it ideal for both street and competition use.
Enhance your 2003+ Dodge Viper’s braking performance with Girodisc’s lightweight floating front rotors—precision-built for better cooling, faster response, and lasting durability.
Sparco S.p.A.
Sparco Stealth RF Carbon Helmet SA2025 / FIA 8859-2024
$1,149.00
Sparco Stealth RF Carbon | SA2025 / FIA 8859-2024
The Sparco Stealth RF Carbon Helmet is built for racers who demand elite protection and comfort at the highest levels of motorsport. With a lightweight carbon fiber shell that exceeds the newest FIA 8859-2024 and Snell SA2025 standards, it delivers unmatched strength and energy absorption without the bulk. Sparco’s advanced ventilation system keeps you cool under pressure, while the fire-retardant, removable linings ensure lasting comfort throughout endurance sessions. Every detail of this helmet is engineered to perform—ready to race straight out of the box with factory-installed HANS/FHR posts.
Pure Carbon Performance. Pure Racing Focus.
SPARCO STEATH RF CARBON FIBER HELMET FEATURES
Lightweight Carbon Fiber Shell: Constructed from ultra-strong carbon fiber to minimize neck fatigue and maximize protection while maintaining an optimal weight balance.
Efficient Ventilation System: Multiple air intakes on the chin bar and top, combined with rear exhaust ports, help regulate airflow and reduce heat build-up during long stints.
Removable Fire-Retardant Linings: Easily removable and washable interior linings keep your helmet fresh and race-ready.
Optional Drink System Compatibility: Integrated ports make it simple to connect an optional hydration system for endurance events.
3-Position Adjustable Visor: Adjustable visor positions provide tailored airflow and visibility for varying track conditions.
Central Locking Visor Mechanism: The secure locking system ensures a firm seal and reliability at high speeds.
Factory-Fitted FHR Posts: Supplied ready for HANS/FHR use, meeting professional racing safety standards.
Dual Shell Sizes: Available in two shell sizes for precise fit and comfort.
Seven Size Options: Covers a wide range of head sizes to achieve a perfect racing fit.
Certifications: FIA 8859-2024 and Snell SA2025 approved for use in professional and amateur motorsport worldwide.
SPARCO STEATH RF CARBON FIBER HELMET SIZE CHART
SPARCO STEATH RF CARBON FIBER HELMET FAQs
Is the Sparco Stealth RF Carbon legal for FIA-sanctioned events? Yes, it meets FIA 8859-2024 and Snell SA2025 standards, making it approved for all major motorsport disciplines.
Does this helmet include HANS posts? Yes, it comes pre-installed with factory-fitted FHR (HANS) posts, ready for immediate use.
What sizes are available? The Stealth RF Carbon is offered in seven sizes across two shell molds, ensuring optimal comfort and fit.
Can I add a drink system? Yes, the helmet is pre-configured for an optional drink system setup, ideal for endurance and GT racing.
How do I clean the interior? The interior fire-retardant linings are removable and washable, allowing easy maintenance between races.
Take your racing experience to the next level with the Sparco Stealth RF Carbon Helmet — precision-built for uncompromised safety, cooling, and performance lap after lap.
OMP Racing
OMP HTE EVO Racing Seat
$1,149.00
OMP HTE EVO Racing Seat
Innovative ultraprotective shell inspired by the multi world champion OMP HTE ONE seat. High protection and containment, designed to accommodate various heights. Large shoulder harness slots. Upholstering in velour and airnet material.
OMP HTE EVO Racing Seat Features
FIA 8855-1999 homologated
Gel-coated fiberglass shell
Approx. Weight: 22 lbs. (10 kg)
Mounting: Side only
GiroDisc Racing Brakes & Technologies
D1-291 GiroDisc Replacement Rotors (OEM Iron)
$1,130.00
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
D1-272 Girodisc Porsche 992 GT3 Front Replacement Rings
$1,130.00
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
D2-154 Girodisc Porsche 390mm Rear Replacement Rotor Rings (OEM PCCB)
$1,130.00
Girodisc Porsche 390mm Rear Rotor Rings
The Girodisc D2-154 Rear Replacement Rotor Rings are precision-engineered replacements for Girodisc two-piece rear rotors on Porsche GT models. Designed to restore the braking performance, cooling capacity, and balance of your Girodisc system, these rings deliver exceptional quality and durability for both street and track use.
Vehicle Fitment
• Porsche 991 GT3 / GT3 RS – Rear• Porsche 992 GT3 / GT3 RS – Rear• Porsche 718 GT4 RS – Rear• Designed for Girodisc two-piece rotor systems• Will not fit OEM or non-Girodisc two-piece rotors
Track-Proven Engineering for Porsche GT Models
Each Girodisc D2-154 replacement ring is cast and machined in the USA using Girodisc’s proprietary high-carbon iron alloy, developed to withstand extreme heat while maintaining consistent performance. The internal curved vane design functions as a centrifugal air pump, drawing air through the rotor to maximize cooling and prevent fade. Sold as a matched pair, these replacement rings include all new hardware and mount directly to your existing Girodisc aluminum hats for a quick and precise installation.
Features
• Size: 390mm x 32mm• Direct replacement for Girodisc Porsche 991 / 992 GT3, GT3 RS, and 718 GT4 RS rear rotors• Proprietary cast iron alloy poured and machined in the USA• Curved vane internal geometry for optimal cooling and fade resistance• Includes complete hardware kit for installation• Reuses Girodisc aluminum hats• Maintains OEM brake bias and ABS calibration• Sold/priced per pair• Not compatible with OEM or other aftermarket hats
Girodisc D2-154 Porsche 390mm Rear Replacement Rotor Rings FAQs
Can I reuse my Girodisc aluminum hats? Yes. These replacement rings are designed to bolt directly onto your Girodisc aluminum hats using the included hardware kit.
Are these compatible with OEM or other brands? No. Girodisc rings are engineered exclusively for Girodisc two-piece rotor systems and will not fit OEM or other aftermarket hats.
What’s included in the kit? Two rear iron rotor rings (left and right) and all new hardware required for installation.
Are the rotors directional? Yes. Each rotor features directional curved vanes to ensure optimal cooling—be sure to install left and right sides correctly.
Do these improve performance over OEM rotors? Absolutely. Girodisc rotors run cooler, resist warping, and offer superior braking consistency under repeated high-temperature conditions compared to OEM discs.
Are they sold as a pair? Yes. The Girodisc D2-154 Porsche 390mm Rear Replacement Rotor Rings are sold and priced per pair and include all necessary hardware for installation.
Maintain your Porsche GT car’s world-class braking performance with Girodisc D2-154 Rear Replacement Rotor Rings—crafted in the USA to deliver unmatched cooling, precision, and endurance on track or street.
GiroDisc Racing Brakes & Technologies
D1-154 Girodisc Porsche 410mm Front Replacement Rings
$1,130.00
D1-154 Girodisc Porsche 410mm Front Replacement Rings
Refresh your Porsche’s braking system with Girodisc D1-154 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 Girodisc’s proprietary high-carbon cast iron, ensuring exceptional heat resistance, consistent friction, and fade-free braking through repeated track sessions or spirited road use.
Vehicle Fitment
Compatible with:• Porsche 991 GT3 / GT3 RS (2014–2019)• Porsche 991 Turbo / Turbo S (2014–2019)• Porsche 992 GT3 (Iron conversion applications)Note: Designed for Girodisc 410mm two-piece front rotor systems. Not compatible with OEM PCCB carbon-ceramic discs or one-piece factory iron rotors.
Features
• Sold as a left/right pair with complete floating hardware kit• Direct replacements for Girodisc 410mm two-piece front rotors• High-carbon iron construction provides excellent thermal stability and long wear life• Directional curved vanes increase airflow and cooling efficiency under sustained braking• Maintains factory brake bias, ABS, and stability control calibration• Precision-balanced for smooth and consistent performance• Designed exclusively for Girodisc aluminum hats used in Porsche iron-conversion kits
Specifications
• Diameter: 410 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 D1-154 Porsche 410mm Front Replacement Ring FAQs
Can these be used with OEM Porsche carbon-ceramic hardware? No. The D1-154 rings are specifically for Girodisc iron conversion hats and cannot mount to PCCB carbon-ceramic assemblies.
What pad compounds work best with these rotors? For dual street/track use, Pagid RS29 or Ferodo DS1.11 are recommended. For daily use, choose low-dust compounds like Ferodo DS2500 or Hawk HPS 5.0.
What torque should I apply to the hardware bolts? Torque each bolt to 12 ft-lbs (16 Nm) using blue Loctite. After one full heat cycle, verify all fasteners are secure.
Are these rotors directional? Yes. Each rotor is marked for left or right installation. Follow the rotation arrows to ensure proper airflow through the curved vane structure for optimal cooling.
Upgrade your Porsche’s braking confidence with Girodisc D1-154 410mm front replacement rings — precision-crafted for heat control, consistency, and race-proven performance lap after lap.
Sparco S.p.A.
Sparco Pro ADV QRT Racing Seat
$1,129.00
Sparco Pro ADV QRT Racing Seat
The Sparco Pro ADV competition seat is the result of a collaborative partnership between Sparco and FIA. The goal was to identify ways to improve safety. The results are new levels in ergonomics, materials and above all safety, are all found in the Sparco Pro-ADV seat. Increased rigidity and the use of impact-absorbing materials are the major advances found in the Sparco Pro ADV. The Pro ADV QRT holds the title of Sparco's Best head-restraint seat. Sparco has offered the Pro ADV for many years, but the latest update to the Pro ADV QRT is that it receives Sparco's QRT Ultra-Light Technology, offering an industry unmatched strength-to-weight ratio for fiberglass composite seats. The head restraint shape has been tweaked to better fit smaller cockpits, while the overall seat dimensions still fit Medium-to-Large drivers up to a 35" waist.
The new Sparco Pro ADV QRT is an upgraded evolution of the original Sparco Pro ADV. The new Pro ADV QRT features a new head restraint redesign that allows better fitment with vehicles with smaller cockpits. The Sparco Pro ADV QRT will fit a medium/large size driver (up to 35 inch waist). The Sparco Pro ADV QRT is made with all-new QRT Technology which results in an ultra-light shell.
The Sparco Pro-ADV QRT is FIA 8855-1999 approved.
What Is Sparco QRT?
Designed and developed at the Sparco OEM Composite Laboratory in Italy, QRT is a patented state-of-the-art technical process, based on aerospace technologies.
QRT creates an unparalleled mechanical strength to weight ratio. This innovative production method generates the lightest fiberglass composite seat shells currently on the market; in fact, it guarantees a reduction in total weight of up to 30% compared to traditional production methods. The QRT seats approach the weight of a comparable carbon fiber seat at a lower price point.
Sparco Pro ADV QRT Racing Seat Features
QRT ultra-light fiberglass composite shell
Excellent head and shoulder protection
Special non-slip fabric for shoulders and bottom cushion
Excellent ergonomics
Fire retardant fabric
FIA 8855-1999 approved
Dimensions
Sparco S.p.A.
Sparco Circuit/Circuit II QRT Racing Seat
$1,129.00
Sparco Circuit / Circuit II QRT Racing Seat
The Sparco Circuit QRT is an ultra-light competition seat specifically designed for circuit use. Made from aramadic fiber-reinforced fiberglass with all-new QRT technology, the Sparco Circuit QRT has an ultra-light shell. The Sparco Circuit QRT includes integrated bolsters to protect the head. This seat can be used with a Hans device for even greater protection. The ultra-light shell is then wrapped in an impact-absorbing and fire retardant fabric that helps hold the body. The integrated head protection is designed to work comfortably and safely with a Hans Device. The slim back offers high lateral support, while an all-new, thin-profile bottom cushion keeps the driver low in the seat without sacrificing comfort. As with all Sparco racing seats, the anti-wear fabric has been added to the seat edges to improve durability and wear.
The Sparco Circuit QRT is FIA approved and available in two sizes: Circuit QRT (Standard) and Circuit II QRT (Large).
What Is Sparco QRT Technology?
QRT technology gives an unparalleled mechanical strength/weight ratio for fiberglass composite racing seats. QRT technology gives an average weight savings of 30% when compared to standard fiberglass technology. The main benefit is that QRT seats approach weight of carbon fiber seat at the price of a fiberglass composite seat.
Sparco Circuit QRT Race Seat Features
QRT technology – 30% weight savings
Ultra-light Aramadic fiber-reinforced fiberglass shell
Integrated head bolsters for greater safety
HANS device compatible
Fire retardant fabric
FIA 8855-1999 approved
The integrated head protection is designed to work comfortably and safely with a Hans Device. The slim back offers high lateral support, while an all-new, thin-profile bottom cushion keeps the driver low in the seat without sacrificing comfort. As with all Sparco racing seats, the anti-wear fabric has been added to the seat edges to improve durability and wear.
Sparco Circuit QRT Fiberglass Racing Seat Details
Manufacturer: Sparco
Manufacturer part no.: 008019RNR (Circuit) or 008011RNR (Circuit II)
Homologation: FIA 8855-1999
Mounting: Side
Weight: Shell Only: 19.7 lbs.
Hans Compatible
Ultra-light Aramaic fiber-reinforced fiberglass shell
Integrated head protection
No-slip fabric for shoulders and bottom cushion
Smooth and slim backrest for high lateral support
Pre-shaped thigh cushion helps separate the driver's legs
Self-extinguishing fabric
Dimensions
Sabelt S.p.A.
Sabelt X-Pad Rallycross Racing Seat | Waterproof
$1,128.00
Sabelt X-Pad Rallycross Waterproof Racing Seat
The Sabelt X-Pad Rallycross is the perfect seat for drivers of compact off-road racing cars who, despite the car's limited interior space, still demand the safety of a full-containment seat. The X-Pad Rallycross is Sabelt’s most compact seat yet, specifically designed to fit in smaller cockpits where drivers want the additional security of a full-containment / halo seat. Sabelt has managed to do this while keeping the seat dimensions comfortable for most average-size racing drivers.
Sabelt achieved the interior fit of the X-Pad Rallycross by replacing traditional bulky seat padding with a significantly thinner, but still comfortable, foam padding. Exterior dimensions of the seat were reduced by changing key elements such as eliminating the "rolled" upper edges of the seat, reducing the width significantly without narrowing the seat to the point where it would only fit small drivers.
The Sabelt X-Pad Rallycross is a prime example of how game-changing innovation can be discovered in plain-sight; it doesn't always require a shake-up to standard conventions.
Sabelt X-Pad Rallycross Racing Seat Details
FIA 8855-1999 homologation
Weight: 20.0 lbs (9.1 kg)
Waterproof and completely washable, just hose it down to clean it
Superb air circulation to help keep you cool
Standard side mounting.
Perfect full-containment seat for small-cockpit cars
Shoulders and hips designed for Regulation 8862 to improve driver safety.
