A1-066 Girodisc 2pc Front Brake Rotors (OEM Steel) - Competition Motorsport
Girodisc A1-066 Girodisc 2pc Front Brake Rotors (OEM Steel) $1,700.00
Girodisc A1-066 Two Piece Floating Rotors These Rotors Fit The Following Cars (with OEM Steel Rotors): Porsche 981 Cayman GT4 Porsche 718 Cayman GT4 Porsche 991 Turbo/Turbo S Porsche 997 Turbo This Girodisc system upgrades the OEM front brakes to a 380mm two-piece steel disc and aluminum hat. This two-piece "floating rotor" design will bolt directly to your GT4 front and work flawlessly with the OEM calipers. Particularly when paired with the Girodisc A2-155 rear rotors, upgrading your brakes to lightweight, high-performance Girodisc rotors maintains the factory brake bias and ABS effectiveness. Much lighter than the OEM rotors, Girodisc rotors reduce rotational and unsprung mass giving you stronger braking and faster suspension response.Combined with Pagid or PFC racing brake pads and Competition Motorsport RF1 racing brake fluid, Girodisc rotors are the ultimate solution to overheated, cracked, warped OEM Porsche rotors that result from high-performance driving. The central hat of the rotor is made from 6061-T6 aircraft aluminum. The disc is manufactured in the USA from the same cast iron used by professional racing organizations. Its curved-vane design, developed in racing, acts like a centrifugal pump forcing cool air through the disc.The disc and hat mount together through a floating mount system using ten cadmium plated, high-strength alloy steel drive pins manufactured by Girodisc. These drive pins transfer braking load while maintaining axial and radial float between the disc and hat to allow for heat expansion. Anti-noise spring washers eliminate the noise typically associated with floating rotors. This two-piece Girodisc design allows for disc-only replacement, reusing the hat to minimize maintenance costs. Sold/priced per pair.
A2-155 Girodisc 2pc Rear Brake Rotors (OEM Steel) - Competition Motorsport
Girodisc A2-155 Girodisc 2pc Rear Brake Rotors (OEM Steel) $1,700.00
Girodisc A2-155 Two Piece Floating Racing Brake Rotors These Rotors Fit The Following Cars (w/ OEM Steel Rotors): Porsche 981 Cayman GT4 Rear Porsche 718 Cayman GT4 Rear Porsche 991 Turbo/Turbo S Rear This Girodisc system upgrades your Porsche OEM rear brakes to 380mm two-piece steel discs and aluminum hats. This two-piece floating rotor design will bolt directly to your Porsche GT4 or Turbo  and work flawlessly with the OEM calipers using the included machined aluminum spacers. Especially when paired with the Girodisc A1-066 front Porsche rotors , upgrading your brakes to lightweight, high-performance Girodisc rotors, you maintain the factory brake bias and ABS effectiveness. Much lighter than the OEM rotors, Girodisc rotors reduce rotational and unsprung mass giving you stronger braking and faster suspension response. Combined with Pagid or PFC racing brake pads and Competition Motorsport Performance RF1 racing brake fluid, Girodisc rotors are the ultimate solution to overheated, cracked OEM Porsche rotors that result from high-performance driving. The central hat of the rotor is made from 6061-T6 aircraft aluminum. The disc is manufactured in the USA from the same cast iron used by professional racing organizations. Its curved-vane design, developed in racing, acts like a centrifugal pump forcing cool air through the disc. The disc and hat mount together through a floating mount system using ten cadmium plated, high-strength alloy steel drive pins manufactured by Girodisc. These drive pins transfer braking load while maintaining axial and radial float between the disc and hat to allow for heat expansion. Anti-noise spring washers eliminate the noise typically associated with floating rotors.This two-piece Girodisc design allows for disc-only replacement, reusing the hat to minimize maintenance costs. Sold/priced per pair.
A1-146 Girodisc 2pc Front Brake Rotors - Competition Motorsport
Girodisc A1-146 Girodisc 2pc Front Brake Rotors from $1,700.00
FITS PORSCHE 911 GT3/GT3RS/GT2RS (2014+) FRONT WITH STEEL BRAKES The Girodisc system is a direct replacement for the OE disc on the 991 GT3, GT3RS, and GT2RS with OEM iron rotors. No modifications are necessary, allows use of factory unmodified pads unlike most aftermarket solutions for this application. The disc will bolt directly to the car and work with OE calipers perfectly. By upgrading your brakes with lightweight, high performance replacements -- as opposed to a big brake kit -- your factory brake bias and ABS efficiency are preserved.The central hat section of our rotor is made from strictly USA-sourced 6061-T6 aircraft specification aluminum. The rotor is made from Girodisc's own proprietary cast iron, poured in the USA and machined from start to finish in house at Girodisc. The rotor utilizes a curved vane design, developed in racing to act as a centrifugal pump to force cooling air through the disc.The rotor and hat have a floating mount system, which utilizes 12 high strength alloy steel drive pins, manufactured by Girodisc in the USA to their own specifications and cadmium plated for long-lasting corrosion resistance. These pins take the load from braking while maintaining the axial and radial float between the hat and disc. The pins are secured by Class 12.9 cap screws with hardened washers. In order to keep the rotors from making noise when cold, the pins are mounted with anti-noise spring washers on the rotor side which allow the rotor to grow with heat expansion, eliminating the rattle and noise commonly associated with floating rotors. This float also allows the rotor to self center between the pads.Once the Girodisc system is in place, simply replace the cast iron rotor ring when needed.When used with Pagid or PFC racing brake pads and hi-temp RF1 racing brake fluid, you have what amounts to a truly amazing solution to overheating or warping rotors.If your car same with OEM center lock wheels please select the center lock drive pin option.Sold/priced in pairs.
A1-154 Girodisc 2pc Front Brake Rotors (OEM PCCB) - Competition Motorsport
Girodisc A1-154 Girodisc 2pc Front Brake Rotors (OEM PCCB) $1,900.00
PORSCHE 991 GT3, GT3RS, AND GT2RS (2014 +) WITH PCCB BRAKES This 410mm Girodisc conversion system is a direct FRONT rotor replacement for the Porsche 991 and 991.2 GT3, GT3RS, AND GT2RS originally equipped with PCCB brakes. These two-piece floating rotors will bolt directly to the car and work with OEM calipers perfectly. You must use must use the pad shape used on the 991 GT3 with iron rotors. The annulus (pad swept height) of these rotors is smaller than the PCCBs to keep rotor weight low and allow far better pad selection. By upgrading your brakes with lightweight high-performance Girodisc rotors (paired with Girodisc A2-154 rear rotors), your factory brake bias and ABS efficiency are maintained. The low rotational and unsprung weight allows for quicker acceleration and transient suspension response. Most racers replace the factory PCCBs with steel two-piece rotors to avoid the inevitable damage to the fragile carbon ceramic discs when swapping wheels at the track! It is suggested that these rotors are to be used with the Pagid 4924 or PFC brake pad profiles normally used in non-PCCB applications.  When combined with the Competition Motorsport RF1 Racing brake fluid or the New HALO P1 High Performance Brake Fluid, you will have an amazing, durable solution to cracked or broken carbon-ceramic rotors at a fraction of the cost of the factory PCCBs. The hat of each rotor is machined from 6061-T6 aircraft aluminum. The disc is manufactured from cast iron using the same specs and materials as professional racing organizations. The curved-vane design acts as a centrifugal pump to force cool air through the disc.   The disc and hat mount together using a floating mount system with high-strength alloy steel drive pins and Grade 12 cap screws. The drive pins transfer braking load while maintaining axial and radial float between the disc and hat to accomodate heat expansion. Hardened washers and anti-noise springs eliminate the rattle and noise sometimes associated with floating rotors. The two-piece Girodisc design allows for disc-only replacement (using Girodisc D1-154); the aluminum hats are re-usable. Sold/priced per pair
A2-146 Girodisc 2pc REAR Brake Rotors - Competition Motorsport
Girodisc A2-146 Girodisc 2pc REAR Brake Rotors from $1,700.00
FITS PORSCHE 911 GT3& GT3RS / GT2RS (2014+) REAR WITH STEEL BRAKES The Girodisc system is a direct replacement for the OE disc on the 991 GT3, GT3RS, and GT2RS with OEM iron rotors. No modifications are necessary, allows use of factory unmodified pads unlike most aftermarket solutions for this application. The disc will bolt directly to the car and work with OE calipers perfectly. By upgrading your brakes with lightweight high performance replacements as opposed to a big brake kit, your factory bias is maintained as well as your ABS efficiency. The central hat section of the Girodisc rotor is made from strictly U.S. sourced 6061-T6 aircraft specification aluminum. The disc is made from their own proprietary cast iron, poured in the USA and machined from start to finish in house at Girodisc. The rotor utilizes a curved vane design, developed in racing to act as a centrifugal pump to force cooling air through the disc. The rotor and hat have a floating mount system, which utilizes 12 high strength alloy steel drive pins, manufactured by Girodisc in the USA to their own specifications and cadmium plated for a long lasting corrosion resistance. These pins take the load from braking actions while maintaining the axial and radial float between the hat and disc. The pins are secured by class 12.9 cap screws with hardened washers. In order to keep the rotors from making noise when cold, the pins are mounted with anti-noise spring washers on the rotor side which allow the rotor to grow with heat expansion but eliminate the rattle and noise associated with floating rotors. This float also allows the rotor to self center between the pads. Once the Girodisc system is in place, simply replace the cast iron rotor when needed. When used with Pagid or PFC racing brake pads and hi-temp RF1 racing brake fluid, you have what amounts to a truly amazing solution to overheating or warping rotors. If your car came with OEM center lock wheels please select the center lock drive pin option. Sold/priced in pairs.
A2-154 Girodisc 2pc REAR Brake Rotors (OEM PCCB) - Competition Motorsport
Girodisc A2-154 Girodisc 2pc REAR Brake Rotors (OEM PCCB) $1,900.00
Girodisc A2-154 Rear Iron Rotor Conversion for Porsche PCCB Fits The Following Porsches With OEM PCCB: Porsche 991.1 and 991.2 GT3 Porsche 991.1 and 991.2 GT3RS Porsche 991.2 GT2RS This 390mm Girodisc conversion system is a rear rotor direct replacement for any Porsche 991 GT3, GT3RS, and GT2RS originally equipped with PCCB brakes. These two-piece floating iron rotors will bolt directly to the car and work with your OEM calipers perfectly. By upgrading your brakes with these lightweight, high-performance Girodisc rotors (paired with the A1-154 front rotors), your factory brake bias and ABS efficiency are maintained. The low rotational and unsprung weight allows for quicker acceleration and transient suspension response. Most racers replace the factory PCCBs with steel two-piece rotors to avoid the inevitable damage to the fragile carbon ceramic discs when swapping wheels at the track! When used with Pagid or PFC performance brake pads and Competition Motorsport RF1 Racing brake fluid, you have an amazing, durable solution to cracked or broken carbon-ceramic rotors at a fraction of the cost of replacing the factory PCCB units. The central hat section of each disc is made from 6061-T6 aircraft 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 floating mount system which utilizes eight to ten high-strength alloy steel drive pins manufactured by Girodisc in the USA to their own specifications and are cadmium plated for corrosion resistance. These 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 rotor only replacement as well to minimize future replacement costs and deliver outstanding performance and cooling. Sold/priced per pair.
Girodisc Rear Caliper Rebuild Kit Porsche 981 Boxster S-Cayman S - Competition Motorsport
Girodisc Girodisc Rear Caliper Rebuild Kit Porsche 981 Boxster S-Cayman S $48.00
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!
A2-032 Girodisc 2pc REAR Brake Rotors (350mm) - Competition Motorsport
Girodisc A2-032 Girodisc 2pc REAR Brake Rotors (350mm) $1,300.00
The Girodisc system is an upgrade to a 350mm two-piece steel rotor and aluminum hat combination, a direct replacement for the OEM brake disc. The two-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 brake bias is maintained as well as your ABS efficiency. Girodisc rotors are lighter than the OEM rotors, reducing rotational and unsprung weight for quicker acceleration and suspension response. When used with Pagid or PFC performance brake pads and Competition Motorsport RF1 racing brake fluid (also available from Competition Motorsport), 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 in the USA from cast iron, made to the same specification and with the same material used by professional racing organizations. The rotor's 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 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 braking 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 typically associated with floating rotors. The two-piece Girodisc design allows for rotor-ring only replacement to minimize future replacement costs. Priced per pair
Girodisc Front Caliper Rebuild Kit Porsche 981 Boxster S-Cayman S - Competition Motorsport
Girodisc Girodisc Front Caliper Rebuild Kit Porsche 981 Boxster S-Cayman S $48.00
PORSCHE 981 BOXSTER S/CAYMAN S FRONT 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!
PFC Porsche 991 GT3 Cup - GT4 Clubsport Front Replacement Slotted Disc - Competition Motorsport
Performance Friction PFC Porsche 991 GT3 Cup - GT4 Clubsport Front Replacement Slotted Disc from $559.95
PFC Porsche 991 GT3 Cup / GT4 Clubsport Front Slotted Replacement Disc 380mm diameter and thickness is 32mmBrake disc only, does not include brake bell. Slotted V2/V3 disc 991GT3 Porsche 991 GT3 Cup (sprint). Not for use in official Porsche Carrera Cup championships.Porsche Cayman GT4 Clubsport (FIA GT4 homologated) GT4CS Part numbers replace 380.32.0054.451/461
Girodisc Titanium Brake Pad Shields for Porsche 991, 992, GT4 Front - Competition Motorsport
Girodisc Girodisc Titanium Brake Pad Shields for Porsche 991, 992, GT4 Front $110.00
Girodisc Titanium Brake Pad Shields FITS: Porsche 991, 992, GT4 Front 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)
A2-035 Girodisc 2pc REAR Brake Rotors (325mm) - Competition Motorsport
Girodisc A2-035 Girodisc 2pc REAR Brake Rotors (325mm) $1,200.00
PORSCHE 981 CAYMAN/BOXSTER BASE AND S (2013+) The Girodisc system is an upgrade to a 325mm two-piece steel rotor and aluminum hat combination and is a direct replacement for the OEM brake disc. The two-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 Girodisc rotors are lighter than OEM pieces.  The reduction in rotational and unsprung weight allows for quicker acceleration and suspension response. When used with Girodisc Magic Pads on the street, Pagid or PFC racing pads on track, and Competition Motorsport RF1 brake fluid (all available from Competition Motorsport), 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 floating mount system which utilizes 8-10 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 rotor only replacement as well to minimize future replacement costs. Sold/Priced per pair
A1-031 Girodisc 2pc Front Brake Rotors (340mm) - Competition Motorsport
Girodisc A1-031 Girodisc 2pc Front Brake Rotors (340mm) $1,200.00
FITS PORSCHE: 986 Boxster (front) 987 Boxster S/Cayman S (front) 996 Carrera 2/Carrera 4 (front) 997.1 Carrera 2/Carrera 4 (front) Competition Motorsport is an authorized dealer for Girodisc products. As one of the largest stocking dealers in the country, we ship most products the same or next business day to ensure we meet your delivery deadline.This Girodisc system upgrades the 317mm OEM one-piece front rotors to 340mm two-piece steel discs and aluminum hats. Caliper spacers are included to accommodate the larger rotors. This two-piece "floating rotor" design will bolt directly to your Porsche front and work flawlessly with the OEM calipers.Upgrading your brakes to lightweight, high-performance Girodisc rotors, you maintain the factory brake bias and ABS effectiveness. Much lighter than the OEM rotors, Girodisc rotors reduce rotational and unsprung mass giving you stronger braking and faster suspension response.Combined with Pagid or PFC performance brake pads and Competition Motorsport RF-1 racing brake fluid, Girodisc rotors are the ultimate solution to overheated, cracked, warped rotors that result from high-performance driving.The central hat of the rotor is made from 6061-T6 aircraft aluminum. The disc is manufactured in the USA from the same cast iron used by professional racing organizations. Its curved-vane design, developed in racing, acts like a centrifugal pump forcing cool air through the disc.The disc and hat mount together through a floating mount system using ten cadmium plated, high-strength alloy steel drive pins manufactured by Girodisc. These drive pins transfer braking load while maintaining axial and radial float between the disc and hat to allow for heat expansion. Anti-noise spring washers eliminate the noise typically associated with floating rotors.This two-piece Girodisc design allows for disc-only replacement, reusing the hat to minimize maintenance costs.Sold/priced per pair.
A2-272 Girodisc 2pc Rear Brake Rotors (OEM Steel) - Competition Motorsport
Girodisc A2-272 Girodisc 2pc Rear Brake Rotors (OEM Steel) $1,700.00
Girodisc A2-272 Two Piece Floating Racing Brake Rotors These Rotors Fit The Following Cars (w/ OEM Steel Rotors) Porsche 992 GT3 Rear Porsche 992 GT3RS Rear Porsche 718 GT4RS Rear The Girodisc system is a direct replacement for the OEM rear discs on the 992 GT3 & GT3RS and the 718 GT4RS with OEM iron rotors. No modifications are necessary, allowing use of unmodified factory pad shapes unlike most aftermarket solutions for this Porsche. The disc will bolt directly to the car and work with OEM calipers perfectly. By upgrading your brakes with lightweight, high performance replacements -- as opposed to a big brake kit -- your factory brake bias and ABS efficiency are preserved. The central hat section of our rotor is made from strictly USA-sourced 6061-T6 aircraft specification aluminum. The rotor is made from Girodisc's own proprietary cast iron, poured in the USA and machined from start to finish in house at Girodisc. The rotor utilizes a curved vane design, developed in racing to act as a centrifugal pump to force cooling air through the disc. The rotor and hat have a floating mount system, which utilizes 12 high strength alloy steel drive pins, manufactured by Girodisc in the USA to their own specifications and cadmium plated for long-lasting corrosion resistance. These pins take the load from braking while maintaining the axial and radial float between the hat and disc. The pins are secured by Class 12.9 cap screws with hardened washers. In order to keep the rotors from making noise when cold, the pins are mounted with anti-noise spring washers on the rotor side which allow the rotor to grow with heat expansion, eliminating the rattle and noise commonly associated with floating rotors. This float also allows the rotor to self center between the pads. Once the Girodisc system is in place, simply replace the cast iron rotor ring when needed. When used with Pagid or PFC racing brake pads and hi-temp Competition Motorsport Performance RF1 racing brake fluid, you have what amounts to a truly amazing solution to overheating or warping rotors. If your car came stock with OEM center lock wheels please select the center lock drive pin option. Sold/priced in pairs.
D1-203 Girodisc Front Replacement Rotor Rings (350mm) - Competition Motorsport
Girodisc D1-203 Girodisc Front Replacement Rotor Rings (350mm) $850.00
Girodisc Rotor Rings (No Hats) Need new rings for your Girodisc 350mm two-piece rotors? We've got them. Rings come complete with new hardware and full instructions for assembly to your existing Girodisc hats. Price is for a pair of rings and hardware kits. Additional hardware kits are available separately.
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