Porsche Brake Rotors

Sparco Skid Racing Shoes Sparco's Skid racing shoe is a unique lightweight design. Its ultra-soft leather upper features an offset closure system without a traditional shoe tongue. This design moves the potential pressure points of traditional laces from the top of your foot to the side, giving you unparalleled comfort. The Skid also features a stretch rear collar for flexibility. It has a comfortable cushioned inner sole and an all-new slim rubber sole that is anti-slip, anti-static, and oil and fuel resistant. All-new anti-static pure rubber outer sole features a special texture for better pedal grip. Available in five colors. Sparco Skid Racing Shoe Technology Ultra-soft leather mid-boot design with unique offset closure system Textured leather lateral protection for abrasion resistance Comfortable cushioned insole Ultra-slim, lightweight outer sole with unique heel support Anti-static pure rubber outsole with texture for grip SFI 3.3/5 and FIA 8856-2018 approved

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PFC Front Slotted Replacement Disc V2/V3 Porsche 991 GT3 Cup / 981 GT4 Clubsport Restore your braking performance with the PFC Front Slotted Replacement Disc, engineered specifically for the Porsche 991 GT3 Cup and Porsche Cayman GT4 Clubsport with PFC front rotors. This is a set of two replacement discs (rotor rings) only, and does not include the aluminum rotor hats. Designed for uncompromising track performance, this 380mm V2/V3 slotted disc restores the exceptional stopping power, durability, and heat management of your PFC front brake rotors. Precision-Machined for Motorsport Applications Crafted from high-quality materials and manufactured to exacting motorsport standards, this replacement disc ensures consistent performance under extreme braking conditions. The V2/V3 slotted design enhances pad bite, improves heat dissipation, and reduces the risk of glazing—making it ideal for sprint racing and high-intensity track use. Key Features: Optimized Dimensions: 380mm diameter x 32mm thickness for perfect fit and performance. V2/V3 Slotted Design: Maximizes braking efficiency, heat management, and debris removal. Direct Replacement: Fits Porsche 991 GT3 Cup (Sprint) and Porsche 981 Cayman GT4 Clubsport (FIA GT4 homologated) models with PFC front slotted two-piece floating rotors. Track-Focused Performance: Engineered for demanding racing environments. Disc Only: Brake bell not included. Compatibility: Porsche 991 GT3 Cup (Sprint). Not for use in official Porsche Carrera Cup championships. Porsche Cayman GT4 Clubsport (FIA GT4 homologated) GT4CS. Part Numbers: 380.32.0054.451 380.32.0054.461 Whether you're chasing podiums or refining your lap times, the PFC Front Slotted Replacement Disc returns the braking performance, reliability, and precision the PFC brake rotors on your Porsche 991 GT3 Cup or GT4 Clubsport demands. Order today from Competition Motorsport for expert service and fast shipping.

Porsche 380mm Front Rotors Experience the difference precision-engineered braking makes with Girodisc 380mm two-piece floating front rotors for Porsche. Designed for direct bolt-on fitment, these rotors deliver superior cooling efficiency, reduced weight, and improved pedal modulation under repeated high-performance use. Precision-Machined for Porsche Performance The Girodisc 380mm rotor is built to handle the demands of aggressive street driving and track sessions alike. Utilizing a floating mount system, each rotor allows controlled movement between the hat and disc—reducing stress, minimizing warping, and improving thermal expansion control. This results in smoother, quieter, and more consistent braking performance in all conditions. A1-066 Girodisc Porsche 380mm Front Rotors Vehicle Fitment • 2007–2012 Porsche 997 GT3• 2007–2012 Porsche 997 GT3 RS• 2008–2013 Porsche 997 Turbo (with 380mm rotors)• 2014–2019 Porsche 991 Carrera S (with 380mm rotors) A1-066 Girodisc Porsche 380mm Front Rotors Features • 380mm two-piece floating rotor design• Direct-fit for factory calipers—no modifications required• Floating mount system with anti-noise spring washers• 6061-T6 aluminum hats, made in the USA• Proprietary high-carbon cast iron for superior durability• Sold/priced per pair A1-066 Girodisc Porsche 380mm Front Rotors FAQs: Are these rotors compatible with factory center-lock hubs? Yes. If your Porsche uses OEM center-lock wheels, select the center-lock drive pin option during purchase. Do these improve braking performance? Yes. The floating design and advanced metallurgy offer better heat control and fade resistance than standard rotors. Can I use stock brake pads? Yes, factory pad fitment is retained, but upgraded compounds are recommended for track use. Do these rotors require maintenance? Only normal inspection for wear; replacement rings are available separately to reuse your existing hats. For Porsche enthusiasts demanding the ultimate in braking consistency and cooling, Girodisc rotors deliver unmatched engineering and reliability—ready for the street or the circuit.

Girodisc Porsche 991, 992 GT3, GT2 RS, GT4 RS PCCB Rear Iron Rotor Conversion Upgrade your Porsche’s carbon-ceramic braking system with Girodisc’s precision-engineered iron rotor conversion. Designed as a direct replacement for OEM PCCB rear rotors, this setup provides improved heat management, reduced long-term costs, and more consistent braking performance under aggressive driving and track conditions. A2-154 Girodisc Porsche Rear Rotor Vehicle Fitment Porsche 911 GT3 (991.1, 991.2, and 992)Porsche 911 GT3 Touring (991 & 992)Porsche 911 GT3 RS (991.1 & 991.2)Porsche 911 GT2 RS (991.2)Porsche 718 Cayman GT4 RS (2022–present)Compatible with OEM PCCB carbon-ceramic brake systems and factory Brembo calipers. Direct Iron Replacement for Porsche PCCB Rotors The Girodisc system bolts directly to factory hubs and calipers with no modifications required. Each rotor features a U.S.-sourced 6061-T6 aluminum hat and Girodisc’s proprietary high-carbon cast-iron friction rings. The floating two-piece design allows thermal expansion without warping, maintaining consistent pad contact and pedal feel. Curved internal vanes act as centrifugal pumps to draw cooling air through the rotor for superior temperature control under repeated hard braking. A2-154 Girodisc Porsche Rear Rotor Features • Direct replacement for OEM PCCB rear rotors – no modifications required• Billet 6061-T6 aluminum hats with hard-anodized finish• Proprietary high-carbon cast-iron rings cast and machined in the USA• Floating mount system with 12 cadmium-plated steel drive pins• Anti-noise spring washers prevent rattle while maintaining float• Curved vane design improves airflow and cooling• Fully rebuildable—replace only the iron rings when worn• Sold/priced per pair Girodisc A2-154 Rear Rotor FAQs: Can I install these without altering the PCCB calipers? Yes. This Girodisc system bolts directly to the OEM hubs and reuses the factory PCCB calipers and hardware—no adapters or spacers needed. Why switch from carbon-ceramic to iron rotors? Iron rotors provide more consistent performance under heat, better pedal feedback, and dramatically lower maintenance costs for frequent track use. Will these affect the car’s ABS or stability control systems? No. Girodisc rotors match OEM dimensions and weight distribution, maintaining full compatibility with Porsche’s electronic systems. Are these suitable for extended track sessions? Absolutely. Girodisc rotors deliver predictable braking feel and exceptional thermal stability during long, high-load track events when paired with performance pads and fluid. Upgrade your Porsche’s PCCB system with Girodisc’s rear iron rotor conversion—engineered for the perfect blend of control, serviceability, and motorsport-grade performance.

Girodisc Porsche 380mm Rear Rotors Upgrade your Porsche’s braking system with Girodisc’s 380mm rear iron rotors, engineered as a direct replacement for OEM carbon-ceramic discs. This setup offers superior heat capacity, consistent braking performance, and reduced replacement costs, all while maintaining OEM fitment and balance for high-performance driving. Girodisc A2-155 Rotor Vehicle Fitment Porsche 911 Turbo / Turbo S (991.1 & 991.2)Porsche 911 GT3 (991.1 & 991.2)Porsche 911 GT3 RS (991 Series)Porsche 911 GT2 RS (991.2)Compatible with OEM carbon-ceramic brake systems and factory Brembo calipers. Direct Replacement Iron Rotor System The Girodisc system bolts directly to the factory hubs and calipers—no modifications necessary. Each rotor features a CNC-machined 6061-T6 aluminum hat mated to Girodisc’s proprietary cast-iron friction ring. The floating two-piece design allows for expansion under heat without distortion, ensuring even pad wear and consistent pedal feel. Curved internal vanes act as centrifugal pumps, drawing cooling air through the disc for excellent thermal control. Girodisc A2-155 Rotor Features • Direct replacement for OEM PCCB 380 mm rear rotors• Billet 6061-T6 aluminum hats with hard-anodized finish• Proprietary high-carbon cast-iron rings cast and machined in the USA• Floating mount system with 10 cadmium-plated steel drive pins• Anti-noise spring washers eliminate rattle while allowing thermal float• Curved vane design improves airflow and heat dissipation• Fully rebuildable—replace only the iron rings when worn• Sold/priced per pair Girodisc A2-155 Rear Rotor FAQs: Can these rotors replace the OEM PCCB carbon-ceramic discs? Yes. The A2-155 rotors are a direct bolt-on replacement designed to fit factory hubs and calipers without adapters. How do iron rotors change braking feel? They offer a firmer, more predictable pedal with better modulation and heat control during extended sessions, making them ideal for track use. Are they suitable for daily driving? Absolutely. Despite their race-bred design, Girodisc rotors operate quietly and smoothly on the street while maintaining superb durability. What maintenance advantages do these have over PCCB? Iron rotors are rebuildable and far more affordable to service—simply replace the friction rings when worn rather than the entire assembly. Enhance your Porsche’s stopping power with Girodisc 380 mm rear rotors—engineered for the perfect balance of reliability, performance, and precision braking control.

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. A1-154 Girodisc 2pc Front Brake Rotor 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). A1-154 Girodisc 2pc Front Brake Rotor 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. A1-154 Girodisc 2pc Front Brake Rotor FAQs 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.

Porsche 991 GT3 /GT3RS 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 A1-146 Girodisc Porsche 991 GT3 / GT3RS Front Rotor Vehicle Fitment Porsche 991 GT3 Porsche 991 GT3 RS A1-146 Girodisc Porsche 991 GT3 / GT3RS Front Rotor 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. A1-146 Girodisc Porsche 991 GT3 / GT3RS Front Rotor 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.

Girodisc Porsche 991 GT3 Rear Rotors Designed for the demanding performance of the 991 GT3 and GT3 RS, these Girodisc rear rotors provide a lighter, stronger, and more heat-efficient upgrade over factory iron rotors. Built for drivers who push their cars to the limit, they offer exceptional pedal feel, cooling performance, and precision without altering OEM brake balance or ABS function. A2-146 Girodisc Porsche 991 GT3/GT3RS Rear Rotor Fitment Porsche 911 GT3 (991.1 & 991.2)Porsche 911 GT3 RS (991.1 & 991.2)Compatible with OEM iron rotor systems and factory calipers. Precision-Built for Track and Street Use The Girodisc system bolts directly to the factory hubs and calipers—no modifications or pad changes required. 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 for thermal expansion without warping, keeping braking consistent during intense heat cycles. Curved internal vanes act as centrifugal pumps to force cooling air through the disc, extending rotor life and minimizing fade. A2-146 Girodisc Porsche 991 GT3/GT3RS Rear Rotor Features • Direct replacement for OEM iron rear rotors—no modifications required• Billet 6061-T6 aluminum hats with anodized finish• Proprietary high-carbon cast-iron rings, cast and machined in the USA• Floating mount system with cadmium-plated drive pins and anti-noise washers• Curved internal vane design improves airflow and cooling• Maintains factory brake balance and ABS efficiency• Fully rebuildable—replace only the iron rings when worn• Sold/priced per pair A2-146 Girodisc Porsche 991 GT3/GT3RS Rear Rotor FAQs: Do these fit both the 991 GT3 and GT3 RS? Yes. They’re designed specifically for OEM iron rotor-equipped 991 GT3 and GT3 RS models and work with stock Brembo calipers. Do I need to change my brake pads or hardware? No. Unlike many aftermarket systems, Girodisc rotors retain full compatibility with OEM pads and hardware. What kind of performance gain should I expect? Expect reduced unsprung mass, better cooling efficiency, and improved pedal consistency under heavy braking conditions. Are these rotors suitable for track use? Absolutely. The floating two-piece construction and curved vane cooling make them ideal for extended track sessions or spirited driving on twisty roads. Bring race-proven braking precision to your Porsche 991 GT3 with Girodisc’s rear rotors—crafted for balance, responsiveness, and reliability at any speed.

PFC Rear Slotted Replacement Disc V2/V3 Porsche 991 GT3 Cup / 981 GT4 Clubsport Dimensions: 380 mm diameter, 30 mm thickness, 47 mm radial depth Brake disc only, does not include brake hat. Restore your braking performance with the PFC Front Slotted Replacement Disc, engineered specifically for the Porsche 991 GT3 Cup and Porsche Cayman GT4 Clubsport with PFC front rotors. This is a set of two replacement discs (rotor rings) only, and does not include the aluminum rotor hats. Designed for uncompromising track performance, this 380mm V2/V3 slotted disc restores the exceptional stopping power, durability, and heat management of your PFC front brake rotors. Precision-Machined for Motorsport Applications Crafted from high-quality materials and manufactured to exacting motorsport standards, this replacement disc ensures consistent performance under extreme braking conditions. The V2/V3 slotted design enhances pad bite, improves heat dissipation, and reduces the risk of glazing—making it ideal for sprint racing and high-intensity track use. Key Features: Optimized Dimensions: 380mm diameter x 30mm thickness for perfect fit and performance. V2/V3 Slotted Design: Maximizes braking efficiency, heat management, and debris removal. Direct Replacement: Fits Porsche 991 GT3 Cup (Sprint) and Porsche 981 Cayman GT4 Clubsport (FIA GT4 homologated) models with PFC front slotted two-piece floating rotors. Track-Focused Performance: Engineered for demanding racing environments. Disc Only: Brake bell not included. Compatibility: Porsche 991 GT3 Cup (Sprint). Not for use in official Porsche Carrera Cup championships. Porsche Cayman GT4 Clubsport (FIA GT4 homologated) GT4CS. Part numbers: 380.30.0047.451 380.30.0047.461 Whether you're chasing podiums or refining your lap times, the PFC Front Slotted Replacement Disc returns the braking performance, reliability, and precision the PFC brake rotors on your Porsche 991 GT3 Cup or GT4 Clubsport demands. Order today from Competition Motorsport for expert service and fast shipping.

Girodisc Titanium Brake Pad Shields Fitment: Porsche 991, 992, GT4 (Front) The problem of brake fluid boiling is caused by braking heat transferring from the rotors and pads directly into the fluid through the caliper pistons. When brake fluid boils, it releases air that is normally part of the molecular structure of the fluid. This air is compressible, of course, so brake pedal pressure compresses this air instead of pushing brake fluid and moving the caliper pistons. The brake pedal goes to the floor. Production street cars tend to suffer from this on track days because they don't have the extensive cooling ducts and exotic brake materials found on race cars. Race-only brake calipers generally come with titanium caliper pistons for one reason: titanium has very low thermal conductivity, which means it's bad at transferring heat. That's good if you're trying to keep your brake fluid from boiling. Here's a comparison of materials and their relative thermal conductivity ratings in Watts per meter-Kelvin (lower is better): Titanium 6AL-4V = 6.7 W/mK Steel = 52 W/mK Aluminum = 130 W/mK Most fixed calipers use aluminum pistons which are, unfortunately, excellent at transferring braking heat to your brake fluid. Our solution is to place Girodisc's thin titanium shims between each brake pad and the caliper pistons. This helps prevent braking heat from transferring into the pistons and, thus, into the fluid. For cars that are going to see hard driving or multiple track days, these shims are affordable protection against losing your brake pedal at the worst possible time, making your track day very expensive. Water-jet cut to exact size, so there's no cutting, grinding, or swearing involved. Price is per axle (four shims)

Girodisc Titanium Brake Pad Shields Fitment: Porsche 991, 992, GT4 Rear The problem of brake fluid boiling is due to heat transferring from the rotors and pads directly into the fluid through the caliper pistons. When brake fluid boils, it releases air that is normally part of the molecular structure of the fluid. This air is compressible, of course, and the brake pedal goes to the floor instead of moving the caliper pistons. Production cars tend to suffer from this on track days because they don't have the extensive cooling ducts and exotic brake materials found on race cars. Race-only brake calipers generally come with titanium caliper pistons for one reason: titanium has low thermal conductivity. This means it's very bad at transferring heat, which is good if you're trying to keep your brake fluid from boiling. Here's a comparison of materials and their relative thermal conductivity ratings (lower is better): Titanium 6AL-4V = 6.7 W/mk Steel = 52 W/mk Aluminum = 130 W/mk Most fixed calipers use aluminum pistons which are, unfortunately, excellent at transferring braking heat to your brake fluid. Our solution is to place Girodisc's thin titanium shims between the brake pad and the caliper pistons. This helps prevent braking heat from transferring into the pistons and, thus, into the fluid. For cars that are going to see hard or multiple track days, these shims are affordable protection from losing your brake pedal at the wrong time and making your track day very expensive. Water jet cut to exact size; no cutting, grinding, or swearing involved. Price is per axle (four shims)

Girodisc Porsche 986/987/996/997.1 Front Rotors The Girodisc system is a direct replacement for the OE disc with the addition of the included caliper spacers and longer bolts. This upgrade increases the rotor diameter from 317mm to 340mm, improving braking force, cooling capacity, and pedal feel. It’s a true bolt-on upgrade that retains your factory calipers and ABS function while reducing unsprung and rotational mass for quicker suspension response and acceleration. Lightweight, High-Performance 2-Piece Rotors The central hat section is machined from U.S.-sourced 6061-T6 aircraft-grade aluminum, while the rotor rings are Girodisc’s proprietary high-carbon cast iron. Each component is made in the USA and machined in-house for precision fitment and consistency. The rotors feature a curved vane design that acts as a centrifugal pump, drawing cooling air through the disc during use for superior heat management on both street and track. Girodisc A1-031 Features Upgrades OE 317mm discs to 340mm for greater thermal capacity and stopping power Floating mount system with 10 cadmium-plated steel drive pins for controlled float and quiet operation Reduces unsprung and rotational mass for sharper handling Fully serviceable—replace just the rotor rings when worn Includes caliper spacers and longer bolts for proper fitment Designed, cast, and machined in the USA Vehicle Fitment Works with factory calipers—no permanent modifications required. Includes caliper spacers and longer bolts. Porsche 986 Boxster S (2000–2004, all non-Big-Red applications) Porsche 987 Boxster / Cayman (2005–2012, non-S) Porsche 996 Carrera (1999–2004, non-Turbo / non-GT) Porsche 997.1 Carrera (2005–2008, non-S) Does not fit: 996/997 Turbo, GT3/GT2, PCCB/ceramic brake packages, or 997.2 models. Technical Specifications Diameter: 340mm (OE 317mm) Vane Design: Curved, directional Hat Material: 6061-T6 aluminum, black anodized Ring Material: High-carbon cast iron Hardware: 10 floating drive pins with Class 12.9 fasteners Sold/Price: Per pair Girodisc A1-031 FAQs Do I need different brake pads? No. These rotors retain the factory caliper and pad shape—just choose your preferred compound for street or track use. Will these make noise like race rotors? No. Girodisc’s spring washer hardware prevents the rattle commonly found in floating rotors while maintaining proper float for thermal expansion. Are the rings replaceable? Yes. The design allows you to replace only the iron rings and reuse the aluminum hats, saving long-term cost. Can I use these for track days? Absolutely. They’re engineered to handle repeated heat cycles without warping or cracking when paired with proper pads and fluid. Upgrade your Porsche braking system with precision-engineered Girodisc rotors. Order today and experience improved stopping performance and reduced weight.

PORSCHE 981 BOXSTER S/CAYMAN S REAR CALIPER REBUILD KIT Track days can be especially hard on the piston seals and dust boots in your brake calipers. Heat, in particular, will do a number on them. (Titanium heat shields behind your pads can help with that.)  This kit is put together from the highest-quality components to rebuild a brake caliper back to like-new condition. One kit is required per caliper (we suggest doing them both as long as you're doing it).  Once you rebuild them, get the Ti heat shields as well and lengthen the interval between rebuilds.  The shields and seals are available as a kit for convenience (and a bit of savings). We only source superior quality brake components (brakes for track use are serious business); some kits don't take it as seriously.  Any questions give us a call, we're happy to help!

A1-291 Girodisc Porsche 718 GT4 RS Front Rotors (408×36 mm) Price: $1,950.00 These Girodisc A1-291 2-piece front rotors are a direct replacement for the Porsche 718 GT4 RS with the factory iron brake system. Weighing about ~29 lb per rotor, the fully floating design reduces unsprung/rotational mass while retaining OEM calipers, ABS, and brake bias. Vehicle Fitment Porsche 718 Cayman GT4 RS (982) – Front, OEM iron brakes (not PCCB) High-Carbon Rings & Curved-Vane Cooling The rotor rings are machined from a proprietary high-carbon iron casting for durability and heat capacity. Curved internal vanes (72-vane) act as a centrifugal pump to pull cooling air through the disc under hard use. The 2-piece construction allows reuse of the aluminum hat with D1-291 replacement rings. Dimensions Diameter: 408 mm Thickness: 36 mm Weight: ~29 lb per rotor assembly Features Direct OEM replacement; no modifications required 2-piece floating design reduces unsprung & rotational mass Reusable 6061-T6 aluminum hats; cadmium-plated hardware Manufactured and assembled in Bellingham, WA Sold/priced per pair A1-291 FAQs Does this fit PCCB cars? No — this listing is for cars with OEM iron rotors. Minimum service thickness? Replace when rings reach 34 mm, or earlier if a crack reaches the outer edge. Which replacement rings? D1-291 (pair, with hardware) for Girodisc hats.

A2-272 Girodisc Porsche 992 GT3, 718 GT4 RS Rear Rotors Direct‑replacement 2‑piece rear rotors for the 992 GT3/GT3RS and 718 GT4 RS. Bolt‑on fit with factory calipers and pads; floating design controls heat and mass for consistent performance. A2-272 Girodisc Porsche Rear Rotor Vehicle Fitment Porsche 992 GT3/GT3RS – Rear (OEM iron brake cars) Porsche 718 Cayman GT4 RS – Rear Design & Cooling High‑carbon iron rings with curved vanes improve airflow and heat capacity. 6061‑T6 aluminum hats are reusable; spring‑preloaded hardware manages thermal growth while minimizing noise. A2-272 Girodisc Porsche Rear Rotor Features Direct OE replacement; no modifications required 2‑piece floating construction Reusable hats; ring‑only service Sold/priced per pair