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A1-134 Girodisc Non-Floating 2pc Front Brake Rotors (350mm) Competition Motorsport is an Authorized dealer for GiroDisc products and the exclusive distributor for the non-floating 2-piece rotors for the 996 GT3 Cup car.  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. Fits Porsche 911 GT3 Cup Car (2000-05) The GiroDisc system is an upgrade to the 2000-2001 GT3 Cup cars and a direct replacement for the 2002-2005 GT3 Cup cars that came with the OEM 6-piston 350mm setup.  These are 2-piece non-floating steel rotor and aluminum hat combination and is a direct replacement for the OEM brake disc.  The 2-piece floating disc will bolt directly to the car and work with OEM calipers perfectly.  By upgrading your brakes with these lightweight high-performance replacements as opposed to a big brake kit, your factory bias is maintained as well as your ABS efficiency.  The Giro Disc rotors are lighter than OEM pieces.  The reduction in rotational and unsprung weight allows for quicker acceleration and suspension response. When used with Pagid or PFC performance brake pads, and Competition Motorsport RF-1 brake fluid (also available from CompetitionMotorsport.com), you have an amazing solution to overheating, cracking and warping rotors. The central hat section of the disc is made from 6061-T6 aircraft specification aluminum.  The disc is manufactured from cast iron which is constructed in the USA and is made to the same specification with the same material used by professional racing organizations.  The rotors curved vane design was developed in racing and acts as a centrifugal pump to force cooling air through the disc.   The rotor and hat mount together through a non-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 2-piece GiroDisc design allows for rotor only replacement as well to minimize future replacement costs and deliver outstanding performance and cooling. Sold/Priced per pair.

A1-134 Girodisc Non-Floating 2pc Front Brake Rotors (350mm) Competition Motorsport is an Authorized dealer for GiroDisc products and the exclusive distributor for the non-floating 2-piece rotors for the 996 GT3 Cup car.  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. Fits Porsche 911 GT3 Cup Car (2000-05) Discontinued New old stock rotor.  These have the straight grooves as images show, not the new curved grooves.  Final Sale, no returns or exchanges. The GiroDisc system is an upgrade to the 2000-2001 GT3 Cup cars and a direct replacement for the 2002-2005 GT3 Cup cars that came with the OEM 6-piston 350mm setup.  These are 2-piece non-floating steel rotor and aluminum hat combination and is a direct replacement for the OEM brake disc.  The 2-piece floating disc will bolt directly to the car and work with OEM calipers perfectly.  By upgrading your brakes with these lightweight high-performance replacements as opposed to a big brake kit, your factory bias is maintained as well as your ABS efficiency.  The Giro Disc rotors are lighter than OEM pieces.  The reduction in rotational and unsprung weight allows for quicker acceleration and suspension response. When used with Pagid or PFC performance brake pads, and Competition Motorsport RF-1 brake fluid (also available from CompetitionMotorsport.com), you have an amazing solution to overheating, cracking and warping rotors. The central hat section of the disc is made from 6061-T6 aircraft specification aluminum.  The disc is manufactured from cast iron which is constructed in the USA and is made to the same specification with the same material used by professional racing organizations.  The rotors curved vane design was developed in racing and acts as a centrifugal pump to force cooling air through the disc.   The rotor and hat mount together through a non-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 2-piece GiroDisc design allows for rotor only replacement as well to minimize future replacement costs and deliver outstanding performance and cooling. Sold/Priced per pair.

A1-139 Girodisc Two-Piece Front Brake Rotors FITMENT: Renault Megane III RS, Front (2017+) This 350mm Girodisc system is a direct replacement for the OEM 340mm Renault rotors, no modifications are necessary. The rotors will bolt directly to the car and work with your OEM calipers using the supplied billet spacers to accommodate the 10mm larger Girodisc rotors. By upgrading your brakes with lightweight high performance replacements (as opposed to a big brake kit), your factory brake bias is maintained as well as your ABS efficiency. The Girodisc front rotors are approx. 22.0 lbs. vs. 25.2 lbs for the stock units. This reduction in rotational and unsprung weight allows for quicker acceleration and suspension response. The central hat section of the disc is made from 6061-T6 aircraft specification aluminum. The disc is manufactured from cast iron constructed in the USA, made to the same specification with the same material used by professional racing organizations. The rotors' curved vane design was developed in racing and acts as a centrifugal pump to force cooling air through the disc. The rotor and hat mount together through a floating mount system which utilizes ten high strength alloy steel drive pins manufactured by Girodisc in the USA to their own specifications and are cadmium plated for corrosion resistance. The alloy drive pins transfer the load from the brake action while maintaining the axial and radial float between the disc rotor and hat. The pins are secured by Grade-12 cap screws with hardened washers and mounted with anti-noise spring washers to allow for heat expansion while eliminating the rattle and noise associated with floating rotors. The two-piece Girodisc design allows for disc-only replacement as well, minimizing future replacement costs and delivering outstanding performance. Sold/priced per pair.

Corvette C6 ZR1, C7 (Z07 CCM) Front Iron Rotor Conversion The Girodisc Front Iron Rotor Conversion provides a direct, lightweight, and track-ready replacement for the OEM carbon ceramic rotors found on the Corvette C6 ZR1 and C7 Z06/Z07 with the carbon brake package. Designed to bolt directly to the car with no modifications, these rotors maintain OEM brake bias, ABS calibration, and pedal feel while offering greater durability and cost-effective serviceability. To optimize performance and keep overall weight in check, this system requires brake pads with a swept area (annulus) of 66mm or less. Girodisc recommends the FMSI 1405 pad shape, which is widely used across performance applications and available in multiple compounds to suit your driving needs. These rotors deliver consistent, fade-free braking performance under the most demanding conditions, from street use to full race duty. Precision-Engineered Performance Vehicle Fitment Chevrolet Corvette C6 ZR1 Chevrolet Corvette C7 Z06 / Z07 Package (CCM Brakes) Features Direct CCM-to-iron conversion: Replaces OEM carbon ceramic rotors with precision-engineered iron rotors that bolt directly to the factory calipers. Lightweight design: Maintains low rotational mass while improving heat dissipation and long-term durability. Curved vane cooling: Directional vanes act as centrifugal pumps to channel air through the rotors, reducing fade during sustained hard braking. Floating mount system: Twelve cadmium-plated drive pins and spring washers allow for thermal expansion while eliminating unwanted noise or vibration. Serviceable construction: Replaceable iron rings and reusable aluminum hats for long-term value and lower running costs. U.S.-made quality: Machined from domestic 6061-T6 aluminum and proprietary cast iron entirely in-house at Girodisc’s Washington facility. Girodisc A1-145 FAQs Do these replace OEM carbon ceramic rotors? Yes. They are designed as a direct bolt-on conversion for ZR1 and Z07 CCM systems. What brake pads should I use? Use a pad with a 66mm annulus or less—FMSI 1405 shape is recommended and available in multiple compounds. Will my brake bias or ABS be affected? No. Girodisc ensures full compatibility with OEM brake balance and electronic control systems. Are they quieter than CCM brakes? Yes, the anti-noise washers eliminate rattle while retaining full floating function. How are they sold? Rotors are sold and priced per pair. Upgrade your C6 or C7 Corvette with Girodisc’s precision-engineered iron rotor conversion for cooler, quieter, and more consistent braking—built for endurance and performance, mile after mile.

Porsche 991 GT3 Front Rotors Girodisc 2-piece floating rotors are a direct, high-performance replacement for the factory iron rotors on Porsche 991 GT3 and GT3 RS models. Designed to bolt directly to the car with no modifications, these rotors retain compatibility with factory pads—something most aftermarket options can’t claim. The result is OEM fitment with upgraded braking performance, lighter weight, and better heat control under demanding track conditions. Each assembly features a 6061-T6 aluminum hat and Girodisc’s proprietary cast-iron rotor ring, manufactured and machined entirely in the USA. The curved vane design acts as a centrifugal pump, drawing cool air through the rotor to reduce surface temperatures and maintain consistent braking performance even under heavy load. Precision-Engineered Performance Vehicle Fitment Porsche 991 GT3 Porsche 991 GT3 RS Features Direct OEM replacement: Works with stock calipers and pads—no special hardware or machining required. Curved vane cooling: Directional vanes pump air through the disc for optimal heat management and fade resistance. Floating mount system: Twelve cadmium-plated drive pins allow the rotor to expand under heat without distortion or rattle. Factory compatibility: Designed to work with Porsche’s OEM iron rotor setup, retaining proper brake bias and ABS function. Lightweight construction: Reduces rotational mass and improves suspension response without compromising durability. Optional center lock fitment: Available with center lock drive pins for cars equipped with OEM center lock wheels. Girodisc A1-146 FAQs Do these fit factory calipers? Yes, they are a direct bolt-on replacement for OEM iron rotors using factory pads and hardware. Will they work with center lock wheels? Yes—select the center lock option when ordering for proper fitment. Are they quieter than stock? Yes, the anti-noise spring washers reduce rattle and ensure smooth, quiet operation. Are they track-proven? Absolutely. When paired with quality pads and hi-temp fluid, these rotors deliver race-level performance and fade resistance. How are they sold? Sold and priced per pair. Step up your GT3’s braking consistency with Girodisc’s precision-built floating rotors—lighter, cooler, and engineered to perform lap after lap.

Corvette C7 Z06, Grand Sport Front Rotors Girodisc 2-piece floating front rotors are a direct, high-performance replacement for the factory discs on the Corvette C7 Z06 and Grand Sport. They bolt directly to the car and maintain full compatibility with OEM calipers, brake bias, and ABS. These lightweight replacements shave approximately 1.6 lbs per rotor versus stock—23.6 lbs down to just 22.0 lbs—delivering sharper turn-in, faster suspension response, and improved acceleration. Each rotor features a CNC-machined 6061-T6 billet aluminum hat paired with Girodisc’s proprietary cast-iron ring. The curved vane internal design works as a centrifugal pump, forcing cooling air through the rotor to dissipate heat efficiently under sustained high-performance driving. The result: consistent pedal feel and reduced fade, lap after lap. Precision-Engineered Performance Vehicle Fitment Chevrolet Corvette C7 Z06 Chevrolet Corvette C7 Grand Sport Features Direct OEM replacement: Works perfectly with factory Brembo calipers, no adapters required. Curved vane ventilation: Directional vanes pump air through the disc for superior heat control and fade resistance. Floating mount system: Twelve high-strength steel drive pins with anti-noise washers allow controlled expansion while eliminating rattle. Lightweight advantage: Saves over 3 lbs of unsprung mass across the front axle for quicker handling response. Made in the USA: All Girodisc rotors are designed, cast, machined, and assembled in-house from domestic materials. FAQs Will these fit my OEM calipers? Yes, Girodisc rotors are engineered for direct fitment with factory Corvette C7 Z06 and Grand Sport Brembo calipers. Are they quieter than race rotors? Yes, the anti-noise washers ensure quiet operation without compromising thermal float. Can they be used on the street? Absolutely. These rotors are smooth and quiet for daily use yet robust enough for aggressive track driving. Do they reduce brake fade? Yes, the directional curved vane design dramatically improves cooling and fade resistance under load. How are they sold? Sold and priced per pair. Enhance your C7’s braking performance and reliability with Girodisc’s precision-built 2-piece front rotors—lighter, cooler, and track-proven for the ultimate Corvette driving experience.

Porsche 996 GT3 Cup Front Rotors The Girodisc Front Rotors for the Porsche 996 GT3 Cup are designed as a high-performance, lightweight replacement for the factory brake discs. Precision-engineered to deliver superior cooling, consistency, and durability, these rotors maintain factory balance and ABS performance while dramatically reducing unsprung and rotational weight for improved acceleration and handling. Direct Replacement Rotors for the 996 GT3 Cup The Girodisc system is a true bolt-on replacement for the OEM front rotors—no modifications are required. By upgrading to Girodisc’s two-piece floating rotor design, you preserve the car’s factory brake bias and ABS calibration while gaining a significant performance advantage. Each Girodisc front rotor weighs approximately 21.0 lbs compared to 25.6 lbs for the stock units, reducing weight where it matters most and improving suspension response and steering feedback. Vehicle Fitment These Girodisc Front Rotors are engineered specifically for: Porsche 996 GT3 Cup (All model years) Direct OEM replacement for factory rotors on Porsche 996 GT3 Cup cars. Compatible with original calipers, pads, and mounting hardware. Features The central hat section is made from U.S.-sourced 6061-T6 aircraft-grade aluminum, providing strength and reduced unsprung weight. The rotor rings are cast from Girodisc’s proprietary iron alloy, poured and machined entirely in-house in the USA. Each disc incorporates a curved vane internal design developed in racing to act as a centrifugal pump, pulling cooling air through the rotor to dissipate heat and reduce fade under extreme use. The floating mount system uses 10 high-strength alloy steel drive pins, cadmium plated for long-lasting corrosion resistance and secured with class 12.9 cap screws and hardened washers. Anti-noise spring washers on the rotor side allow for thermal expansion while preventing rattles and noise, ensuring a smooth, quiet operation. The floating design also enables the rotor to self-center between pads, maintaining optimal brake feel and consistent pad contact throughout the temperature range. Once installed, only the iron rotor rings need replacement as they wear, allowing the aluminum hats to be reused—significantly lowering long-term operating costs while delivering world-class performance on the track. FAQs: Porsche 996 GT3 Cup Front Rotors Do these rotors fit the factory GT3 Cup calipers? Yes, the Girodisc system bolts directly to the car and is fully compatible with the factory GT3 Cup calipers and pad shape. How much lighter are these than OEM rotors? Each Girodisc front rotor saves approximately 4.6 lbs compared to the stock unit, improving both suspension response and acceleration. Are these rotors suitable for endurance racing? Absolutely. Girodisc rotors are designed to withstand sustained high temperatures and heavy use in professional motorsport environments. Do I need to change brake pads when installing Girodisc rotors? You can continue using the factory pad shape, or upgrade to any high-performance compound compatible with the GT3 Cup calipers. Can I replace just the iron rings later? Yes, Girodisc rotors are designed for serviceability—once installed, only the iron rings need replacing when worn. Enhance your Porsche 996 GT3 Cup’s braking power with the Girodisc Front Rotors—precision-engineered, track-proven, and made entirely in the USA for professional-level performance and reliability.

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 Audi TT RS (8J) Rear Rotors Upgrade your Audi TT RS braking system with Girodisc’s lightweight two-piece rear rotors. Designed as a direct OEM replacement, these precision-engineered rotors improve cooling, reduce unsprung mass, and deliver more consistent pedal feel on both street and track. Perfect for drivers seeking high-performance stopping power without compromising everyday drivability. Vehicle Fitment Audi TT RS (8J, 2012–2013)Also compatible with select Audi models using the same 335 mm rear brake setup.Fits OEM Brembo rear calipers with no modifications required. Direct OEM Replacement, Race-Inspired Design The Girodisc system bolts directly to the car and works with factory calipers and pads. Each rotor features a CNC-machined 6061-T6 aluminum hat paired with Girodisc’s proprietary high-carbon cast-iron friction ring. The two-piece floating design allows the rotor to expand under heat without warping, ensuring consistent braking and long-term durability. Curved internal vanes act as centrifugal pumps to move air through the disc, maximizing heat dissipation and minimizing fade during spirited driving. Features • Direct OEM replacement—no modifications required• 6061-T6 billet aluminum hats with hard-anodized finish• Proprietary cast-iron friction rings poured and machined in the USA• Floating mount system with cadmium-plated drive pins• Anti-noise spring washers eliminate rattle and maintain float• Curved vane internal design for efficient cooling• Approximately 13.2 lbs each vs. 15 lbs OEM• Fully rebuildable—replace only the iron rings when worn• Sold/priced per pair Girodisc A2-152 Rear Rotor FAQs: Do these rotors fit directly with factory Brembo calipers? Yes. They install using the OEM hardware with no adapters or spacers, retaining stock brake geometry and function. What kind of performance improvement will I notice? Expect quicker brake response, more consistent pedal feel, and reduced fade during repeated hard stops thanks to improved airflow and lower unsprung weight. Are Girodisc rotors noisy or prone to vibration? No. The anti-noise spring washers eliminate the rattle common with floating rotors, keeping operation smooth and quiet. Can I use OEM or aftermarket pads? Absolutely. Girodisc rotors are compatible with stock pads or any performance compound suited to iron discs. Bring sharper response and track-tested reliability to your Audi TT RS with Girodisc’s rear rotors—lightweight, rebuildable, and engineered for precision braking performance.

Girodisc Front Rotors for Porsche Carrera, 981 / 718 – Includes Spacers & Bolts Upgrade the front braking system on your Porsche Carrera, 981, or 718 with Girodisc 2-piece front rotors. This system is a direct replacement for the OE discs, with the addition of the included caliper spacers and bolts. Rotor diameter increases to 350 mm from the factory 330 mm, delivering improved braking torque and greater thermal capacity for consistent performance. A1-153 Vehicle fitment • Porsche 911 Carrera (non-Turbo) with standard 330 mm front brakes (front axle).• Porsche 981 / 718 Cayman & Boxster with standard 330 mm front brakes (front axle).• Supplied spacers and bolts adapt OEM calipers to the larger 350 mm Girodisc rotors. Note: Always verify wheel and caliper clearance when upsizing to 350 mm rotors. Lightweight, high-performance rotor engineering The rotor hats are precision-machined from U.S.-sourced 6061-T6 aircraft-spec aluminum. The iron rotor rings are cast in the USA using Girodisc’s proprietary high-carbon iron alloy, then machined in-house for exacting tolerances. A curved vane design actively pumps cooling air through the disc under braking, improving fade resistance during demanding use. A1-153 Features • Direct replacement upgrade with supplied caliper spacers and bolts• 350 mm diameter vs. OEM 330 mm for greater braking force• Proprietary high-carbon cast iron rings, cast and machined in the USA• 6061-T6 aluminum hats, black anodized• 10 high-strength alloy steel drive pins, cadmium plated for corrosion resistance• Floating rotor system with anti-noise spring washers• Self-centering rotor float improves pad alignment under heat• Replaceable rings allow lower long-term operating cost• Sold/priced in pairs Related Products Girodisc  D1-153 Front Replacement Rings Girodisc A2-153 Rear Rotors Girodisc D2-035 Rear Replacement Rings Service guidance • When the iron rings reach minimum thickness or show fatigue cracking, replace only the rings while reusing the aluminum hats and hardware.• Replacement D1-135 rings are available separately for cost-effective service. The Girodisc A1-135 front rotor system transforms your braking with increased diameter, improved cooling, and precision floating construction—all while allowing economical service down the road.

Porsche 991 GT3, GT2RS, GT4RS PCCB Front Iron Rotor Conversion The Girodisc PCCB Front Iron Rotor Conversion is the ultimate solution for Porsche 991 GT3, GT2RS, and 718 GT4RS owners looking to replace costly carbon ceramic rotors with a lightweight, high-performance iron alternative. Designed for seamless fitment and OEM compatibility, this system delivers improved braking feel, durability, and cost efficiency without compromising your Porsche’s balance or factory performance. Direct PCCB Replacement for Track-Focused Drivers This conversion system is a direct replacement for Porsche’s PCCB (carbon ceramic) rotors, using the same pad shape as 991 GT3 models equipped with factory iron brakes. The smaller pad annulus keeps overall rotor weight reasonable while improving pad selection options for street, track, or endurance setups. Unlike oversized PCCB-equivalent rotors, Girodisc’s optimized annulus design maintains proper mass distribution for responsive, consistent braking performance. Vehicle Fitment These Girodisc PCCB Front Iron Rotor Conversions are engineered specifically for: Porsche 991 GT3 (PCCB-equipped) Porsche 991 GT3 RS (PCCB-equipped) Porsche 991 GT2 RS (PCCB-equipped) Porsche 718 GT4 RS (PCCB-equipped) Compatible with both 991.1 and 991.2 models originally fitted with Porsche Carbon Ceramic Brakes (PCCB). Features The rotor hat is CNC-machined from U.S.-sourced 6061-T6 aircraft-grade aluminum for strength and reduced unsprung weight. The rotor rings are made from Girodisc’s proprietary cast iron alloy, poured and machined entirely in-house in the USA. Each disc features a curved vane internal design that acts as a centrifugal pump, forcing cooling air through the rotor to reduce temperatures and improve fade resistance under extreme use. The floating mount system employs 12 high-strength alloy steel drive pins, cadmium plated for long-lasting corrosion resistance and secured by class 12.9 cap screws with hardened washers. Anti-noise spring washers allow the rotors to expand with heat while eliminating the rattle often associated with floating rotors. The floating setup also ensures the rotor self-centers between the pads, maintaining consistent pedal feel and precision braking feedback. Once installed, the Girodisc system allows future rotor replacements to be quick and cost-effective — simply replace the iron rings while retaining your original aluminum hats. This keeps long-term maintenance costs low while providing exceptional stopping performance for street and track use alike. Sold and priced in pairs. FAQs: Porsche 991 GT3, GT2RS, GT4RS PCCB Front Iron Rotor Conversion Will these fit my PCCB-equipped Porsche? Yes. They are designed to replace the factory PCCB rotors directly. You’ll just need to use the smaller iron pad shape from 991 GT3 models with iron brakes. Why switch from PCCB to iron rotors? Iron rotors offer superior heat dissipation, better pedal feel, and dramatically reduced replacement costs compared to PCCBs, making them ideal for frequent track drivers. Do I need to modify anything for installation? No modifications are required. The Girodisc rotors bolt directly to your existing hubs and calipers, maintaining all factory geometry and electronics. How do these compare in weight to PCCBs? They are slightly heavier, but the difference is offset by improved cooling, reduced fade, and greater brake pad compatibility — critical benefits for extended track sessions. Can I reuse the aluminum hats? Absolutely. When the rotors wear out, simply install new Girodisc iron rings onto your existing hats, making replacements quick and economical. Upgrade your Porsche’s braking system with the Girodisc PCCB Front Iron Rotor Conversion — precision-engineered in the USA for drivers who demand consistent, fade-free performance lap after lap.

 Girodisc Porsche 410mm Front Rotors The Girodisc 410mm Front Rotors for Porsche 991 and 992 models deliver exceptional braking performance and longevity without the downsides of heavy carbon ceramics. Designed as a direct replacement for the OE discs, these rotors maintain factory brake bias and ABS efficiency while allowing a broader range of high-performance pad choices. Lightweight, Track-Proven Replacement Rotors This system is a direct replacement for the factory iron rotors, provided you use the same pad shape found on 991/992 GT3 and Turbo models equipped with iron brakes. The smaller annulus (pad swept height) versus PCCB pads reduces weight and expands your pad selection options, while still delivering exceptional heat management under demanding track conditions. Features The central hat section is machined from U.S.-sourced 6061-T6 aircraft-grade aluminum for maximum strength and minimal unsprung mass. The rotor rings are made from Girodisc’s proprietary cast iron, poured and fully machined in-house in the USA. Each rotor features a curved vane design that acts as a centrifugal pump to move cooling air efficiently through the disc, reducing heat fade and extending pad life. The floating mount system uses 12 high-strength alloy steel drive pins, cadmium plated for corrosion resistance and secured with class 12.9 cap screws and hardened washers. Anti-noise spring washers allow the rotors to expand under heat while eliminating the rattle typically associated with floating systems. This floating design also lets the rotor self-center between the pads for consistent pedal feel and reduced drag. Once the Girodisc system is installed, future rotor service is simple—only the iron rotor rings need replacement when worn, keeping your long-term costs and downtime low. FAQs: Porsche 410mm Front Rotors Do these rotors fit PCCB-equipped cars? Yes, but you must use the smaller pad shape from 991/992 GT3 or Turbo models originally fitted with iron brakes. The PCCB pads are too large for these discs. Will these rotors affect my ABS or brake bias? No, Girodisc designs their rotors to maintain the factory brake balance and ABS performance of your Porsche. How much lighter are these than OEM rotors? The weight varies by application, but Girodisc rotors typically save several pounds per corner, reducing rotational and unsprung weight for sharper handling and acceleration. Do I need special hardware to install them? No modifications are needed. The Girodisc rotors bolt directly to your car and work with your OEM calipers and mounting hardware. Can I reuse the aluminum hats when replacing rotors? Yes — the system is designed so that when the iron rings reach end of life, you can simply install new rings onto the existing hats. Upgrade your Porsche’s stopping power and feel with the precision-engineered Girodisc 410mm Front Rotors — built for drivers who demand race-level performance on both street and track.

BMW Front Rotors (Girodisc A1-157) The Girodisc Front Rotor set for the BMW E9X M3 provides a precision-engineered, lightweight upgrade that enhances braking performance and thermal management without the need for any modifications. Designed as a direct OEM replacement, these two-piece rotors retain full compatibility with the factory calipers and ABS system while reducing rotating and unsprung mass for sharper handling and acceleration. Vehicle Fitment This Girodisc front rotor set fits the following BMW models: BMW M3 E90 Sedan (2008–2011) BMW M3 E92 Coupe (2008–2013) BMW M3 E93 Convertible (2008–2013) Direct bolt-on installation using the OEM calipers and hardware. No spacers, brackets, or modifications required. Performance and Design Each rotor weighs significantly less than the factory single-piece iron discs, resulting in reduced rotational inertia and improved suspension response. The 48 curved directional vanes inside the rotor act as a centrifugal pump, pulling air through the disc to increase cooling efficiency and reduce fade during repeated high-performance braking. The central hat is CNC-machined from U.S.-sourced 6061-T6 aluminum for strength and low weight, while the friction ring is Girodisc’s proprietary cast iron, poured and machined entirely in the USA. Features - Direct OEM replacement; bolts on with no modifications required. - Two-piece floating rotor design reduces unsprung and rotating mass. - Proprietary cast iron rotor ring with 6061-T6 aluminum hat for optimal strength and heat management. - 48 curved directional vanes improve cooling and minimize fade during aggressive driving or track use. - Floating mount system with ten high-strength alloy steel drive pins allows for precise axial and radial float. - Anti-noise spring washers eliminate rattle during street driving while maintaining full float when hot. - Cadmium-plated hardware and class 12.9 cap screws for corrosion resistance and durability. - Fully designed, cast, and machined in the USA to Girodisc motorsport-grade tolerances. Specifications Rotor Type: Two-piece floatingVane Count: 48 curved directionalMaterial: Proprietary cast iron with 6061-T6 aluminum hatHardware: 10 alloy steel drive pins with anti-noise spring washersFitment: BMW E90, E92, E93 M3 (2008–2013)Installation: Direct bolt-onSold as: Pair (left and right front rotors) FAQs: BMW E9X M3 Front Rotors (Girodisc) Do these rotors fit with the OEM calipers? Yes. They are designed as a direct replacement and work perfectly with the factory calipers and pads. What benefits do these offer over stock rotors? Reduced unsprung mass, faster suspension response, improved cooling, and more consistent braking under heavy use. Are these noisy during normal street use? No. The use of anti-noise spring washers eliminates rattle while maintaining full floating capability under heat. Can the rotors be rebuilt? Yes. Once the iron friction rings wear out, they can be replaced independently, allowing reuse of the aluminum hats and hardware. Ordering Information Sold and priced per pair. Includes left and right Girodisc front rotors for the BMW E9X M3.

McLaren Front Rotors (Girodisc A1-159) The Girodisc 394mm Front Rotor Conversion for McLaren models provides a lightweight, high-performance alternative to the OEM carbon-ceramic rotors. Designed as a direct bolt-on replacement, these two-piece iron rotors retain full compatibility with the factory calipers while improving heat management, serviceability, and overall braking performance. By switching to iron rotors, drivers benefit from enhanced thermal durability and reduced maintenance costs without compromising braking balance or ABS functionality. Vehicle Fitment This Girodisc 394mm front rotor set fits the following McLaren models equipped with OEM carbon-ceramic front rotors: McLaren 540C McLaren 570S / 570GT McLaren 600LT McLaren 650S McLaren 675LT McLaren MP4-12C McLaren 720S (with 394mm front rotors) Direct fit for factory six-piston front calipers. No modifications required. Pad Compatibility To optimize performance and reduce unnecessary weight, these rotors are designed for pads with an annulus (swept area) of 66mm or less. The correct pad shape is the common FMSI D1405, also used on vehicles such as the Nissan GT-R, Cadillac CTS-V, and many AMG Mercedes models with six-piston calipers. Girodisc offers several pad compounds in this shape; contact us for recommendations. Performance and Design The rotor assembly combines a 6061-T6 aircraft-grade aluminum hat with a proprietary cast iron friction ring machined entirely in-house at Girodisc. The curved vane design acts as a centrifugal pump, pulling air through the disc to improve cooling efficiency under sustained high temperatures. The result is consistent braking performance, reduced fade, and improved pedal feel in both track and street conditions. Features - Direct replacement for OEM 394mm carbon-ceramic rotors; no modifications required. - Two-piece floating design reduces unsprung and rotating mass for sharper response. - 6061-T6 aluminum hat mated to a proprietary cast iron rotor ring for strength and thermal control. - Curved vane internal design promotes efficient airflow and heat dissipation. - Floating mount system with 12 high-strength alloy steel drive pins for controlled axial and radial float. - Anti-noise spring washers eliminate rattle during street use while maintaining float under race conditions. - Cadmium-plated hardware ensures corrosion resistance and longevity. - Fully machined and assembled in the USA to Girodisc motorsport-grade specifications. Specifications Rotor Diameter: 394mmRotor Type: Two-piece floatingPad Shape: FMSI D1405 (≤66mm annulus)Material: Proprietary cast iron with 6061-T6 aluminum hatHardware: 12 alloy steel drive pins with anti-noise spring washersFitment: McLaren models with 394mm OEM carbon-ceramic rotorsSold as: Pair (left and right front rotors) FAQs: McLaren 394mm Front Rotors (Girodisc) Why do I need to change the pad shape? To maintain optimal weight and heat capacity, the Girodisc rotors use a smaller 66mm swept area. The FMSI D1405 pad shape provides the correct fit and performance balance. Can I reuse my OEM pads? No. The OEM pads are designed for the full annulus of the carbon-ceramic rotors and are too large for this conversion. Are these rotors noisy? No. Anti-noise spring washers prevent rattle during normal driving while allowing full float under heat. What are the main benefits over OEM carbon-ceramic rotors? Improved serviceability, enhanced thermal consistency, and a major cost reduction for replacement and maintenance. Can the rotors be serviced? Yes. When the cast iron rings wear out, they can be replaced individually, allowing the aluminum hats and hardware to be reused. Ordering Information Sold and priced per pair. Includes left and right Girodisc 394mm front iron rotors for McLaren models equipped with OEM carbon-ceramic brakes. Requires FMSI D1405 pad shape for installation.

Ford Shelby GT350 Front Rotors (Girodisc A1-162) The Girodisc Front Rotor set for the Ford Shelby GT350 provides a performance-focused upgrade that enhances braking response and heat management while maintaining perfect compatibility with the factory calipers and pads. Designed as a direct replacement for the OEM discs, these rotors bolt on with no modifications required and retain factory brake bias and ABS functionality. Vehicle Fitment This Girodisc front rotor set fits the following models: Ford Mustang Shelby GT350 (2015–2020) Ford Mustang Shelby GT350R (2015–2020) Direct OEM replacement; works with stock calipers and pads. No modifications or adapters required. Performance and Design Each Girodisc rotor features a two-piece floating design with a 6061-T6 aluminum hat and proprietary cast iron friction rings, both manufactured in the USA. This design significantly reduces unsprung and rotational mass, improving suspension response and acceleration. The internal curved vane structure acts as a centrifugal pump, forcing air through the disc to increase cooling efficiency during repeated high-performance braking. Features - Direct bolt-on replacement for OEM rotors; no modifications needed. - Two-piece floating rotor design reduces unsprung and rotating weight for sharper handling. - 6061-T6 aluminum hat with proprietary cast iron friction rings for optimal strength and heat capacity. - Curved vane internal design enhances airflow and heat dissipation under heavy braking. - Floating mount system with 12 high-strength alloy steel drive pins allows precise axial and radial float. - Anti-noise spring washers eliminate rattle during normal street use while maintaining full float under race conditions. - Cadmium-plated hardware and class 12.9 fasteners ensure long-term corrosion resistance and durability. - Designed, cast, and machined entirely in the USA to motorsport-grade specifications. Specifications Rotor Type: Two-piece floatingMaterial: Proprietary cast iron with 6061-T6 aluminum hatHardware: 12 alloy steel drive pins with anti-noise spring washersFitment: Ford Mustang Shelby GT350 / GT350RInstallation: Direct bolt-on using OEM calipers and padsSold as: Pair (left and right front rotors) FAQs: Ford Shelby GT350 Front Rotors (Girodisc) Do these rotors work with the OEM pads and calipers? Yes. They are designed to bolt directly to the factory calipers and work perfectly with OEM or aftermarket pads. What improvements can I expect over the stock rotors? Reduced unsprung weight, improved cooling, and more consistent braking performance under high heat conditions. Are these rotors noisy like typical floating designs? No. The use of anti-noise spring washers prevents rattle during daily driving while preserving full float under heavy thermal expansion. Can I service these rotors later? Yes. Once the cast iron friction rings wear out, you can replace only the rings while retaining the aluminum hats and hardware. Ordering Information Sold and priced per pair. Includes left and right Girodisc front rotors for Ford Shelby GT350 and GT350R models.

Dodge Viper ACR Front Iron Rotor Conversion (Girodisc A1-165) The Girodisc Front Iron Rotor Conversion for the Dodge Viper ACR provides a high-performance, serviceable alternative to the factory carbon-ceramic rotors. Designed as a direct bolt-on replacement, this system maintains OEM caliper compatibility and factory brake balance while improving heat tolerance, reducing maintenance costs, and offering long-term durability. Vehicle Fitment This Girodisc front rotor conversion kit fits the following models: Dodge Viper ACR (2015–2017) Dodge Viper TA and GTS models equipped with OEM carbon-ceramic front rotors Designed for factory calipers and hubs with no modifications required. Performance and Design To maintain optimal weight and performance, the Girodisc system uses a pad annulus (swept area) of 66mm or less, requiring the use of brake pads with the FMSI #1405 pad shape. This ensures ideal mass and thermal characteristics without adding unnecessary weight. The two-piece floating rotor design features a lightweight 6061-T6 aluminum hat and a proprietary cast iron rotor ring, both machined in the USA for superior precision and performance. The curved vane internal structure acts as a centrifugal pump, forcing cooling air through the disc to minimize fade during sustained high-speed braking. Features - Direct replacement for OEM carbon-ceramic rotors; bolts on with no modifications. - Requires FMSI #1405 pad shape (available in multiple compounds). - Two-piece floating design with a 6061-T6 aluminum hat and proprietary cast iron friction ring. - Curved vane internal design increases airflow for exceptional heat dissipation and stability. - Floating mount system with 12 high-strength alloy steel drive pins for controlled axial and radial float. - Anti-noise spring washers eliminate rattle while allowing full thermal expansion of the rotor under load. - Cadmium-plated hardware and class 12.9 cap screws ensure long-term corrosion resistance. - Fully machined and assembled in the USA to Girodisc motorsport standards. Specifications Rotor Type: Two-piece floating iron rotor conversionPad Shape: FMSI #1405 (annulus ≤ 66mm)Material: Proprietary cast iron with 6061-T6 aluminum hatHardware: 12 alloy steel drive pins with anti-noise spring washersFitment: Dodge Viper ACR, TA, and GTS with OEM CCM rotorsInstallation: Direct bolt-onSold as: Pair (left and right front rotors) FAQs: Dodge Viper ACR Front Iron Rotor Conversion (Girodisc) Why is a different pad shape required? To maintain ideal mass and temperature control, these rotors use a 66mm swept area. The correct pad shape is FMSI #1405, which Girodisc offers in several compounds. Can I use my stock carbon-ceramic pads? No. The OEM CCM pad annulus is too large for this conversion. Use only the specified FMSI #1405 pad shape. Are these rotors quieter than typical race-style floating rotors? Yes. The floating pins are mounted with anti-noise spring washers that eliminate rattle during street use while maintaining full float under heavy braking. What are the main advantages of switching to iron rotors? Improved thermal durability, easier serviceability, and significantly lower replacement costs compared to carbon-ceramic rotors. Can I reuse the aluminum hats when replacing the rings? Yes. Only the cast iron friction rings need to be replaced once worn, allowing cost-effective maintenance. Ordering Information Sold and priced per pair. Includes left and right Girodisc front iron rotors for Dodge Viper ACR, TA, and GTS models with carbon-ceramic front brakes. Requires FMSI #1405 pad shape for installation.