Giro Slotted Brake Disc

Brake caliper mounting stud kit GiroDisc
One kit per axle



Fits: - Front 340mm disc and Rear 325mm disc

Porsche 996 Carrera - 1997 to 2005
Porsche 997.1 Carrera - 2005 to 2008
Porsche 986 Boxster S - 1999 to 2004
Porsche 987 Boxster S - 2009 to 2012
Porsche 987 Cayman S / Cayman R - 2005 to 2008

Rear Only - 325mm Disc
Porsche 981 Cayman / Boxster - 2012 to 2016
Porsche 981 Cayman S / Boxster S / GTS - 2012 to 2016
Porsche 718 Cayman / Boxster 2.0ltr - 2017 Onwards
Porsche 718 Cayman / Boxster S / GTS 2.5ltr - 2017 Onwards

Girodisc caliper studs are a direct replacement for the OEM caliper bolts.

A must-have item for those who track or race their cars often. The factory bolts will quickly strip out the threads in the expensive wheel uprights, from removing the calipers for maintenance. These Cup-style caliper studs will eliminate this problem and quickly pay for themselves. They also allow for quicker and easier caliper installation by guiding the calipers into position. Manufactured from aerospace quality 17-4 PH stainless steel for high strength and corrosion resistance. One kit includes 4 studs, nuts, and washers, complete for one axle. Two kits are required for the front and rear.
These Brake caliper stud kits now include the highest quality available, ARP 12-point nuts. This is a no-compromise solution. Made from high-strength stainless steel, these nuts will not corrode, have a 180,000 PSI tensile strength, and are compact in size for a better fit in the brake caliper bore.

Please Note
If you are not familiar with, or confident that you understand how to replace the caliper bolts with studs please have a certified mechanic perform the installation.

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

BCS-04

The product you are viewing cross references to these numbers

Brake caliper mounting stud kit GiroDisc
One kit per axle



Fits: - Front and Rear

Porsche 997.2 Carrera - 2009 to 2012 
Porsche 991.1 Carrera / C4 - 2012 to 2016
Porsche 991.1 Carrera S / 4S / GTS - 2012 to 2016
Porsche 991.2  Carrera / C4 / T - 2016 to 2018

Front Only
Porsche 991 turbo / turbo S - 2012 to 2018 WITHOUT PCCB 
Porsche 981 Cayman S / Boxster S/ GTS - 2012 to 2016
Porsche 718 Cayman / Boxster 2.0ltr - 2017 Onwards 
Porsche 718 Cayman S / Boxster S / GTS 2.5ltr - 2017 Onwards

Rear Only
Porsche 991.2 Carrera S / 4S / GTS - 2016 to 2018
Porsche 996 GT3 Cup
Porsche 996.2 GT3 / GT2 - 2001 to 2005
Porsche 981 Boxster Spyder - 2016

Girodisc caliper studs are a direct replacement for the OEM caliper bolts.

A must-have item for those who track or race their cars often. The factory bolts will quickly strip out the threads in the expensive wheel uprights, from removing the calipers for maintenance. These Cup-style caliper studs will eliminate this problem and quickly pay for themselves. They also allow for quicker and easier caliper installation by guiding the calipers into position. Manufactured from aerospace quality 17-4 PH stainless steel for high strength and corrosion resistance. One kit includes 4 studs, nuts, and washers, complete for one axle. Two kits are required for the front and rear.
These Brake caliper stud kits now include the highest quality available, ARP 12-point nuts. This is a no-compromise solution. Made from high-strength stainless steel, these nuts will not corrode, have a 180,000 PSI tensile strength, and are compact in size for a better fit in the brake caliper bore.

Please Note
If you are not familiar with, or confident that you understand how to replace the caliper bolts with studs please have a certified mechanic perform the installation.

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

BCS-03

The product you are viewing cross references to these numbers

Brake caliper mounting stud kit GiroDisc
One kit per axle



Fits: - Front 340mm Disc and Rear 325mm Disc

Porsche 996 Carrera  - 1997 to 2005
Porsche 997.1 Carrera - 2005 to 2008
Porsche 986 Boxster S - 1999 to 2004
Porsche 987 Boxster S - 2005 to 2012
Porsche 987 Cayman S / R - 2005 to 2012

Rear Only - 325mm Disc
Porsche 981 Cayman / Boxster - 2012 to 2016
Porsche 981 Cayman S / Boxster S / GTS - 2012 to 2016
718 Cayman 2.0ltr / Boxster 2.0ltr - 2017 Onwards 
Porsche 718 Cayman S 2.5ltr / Boxster S 2.5ltr / GTS 2.5ltr - 2017 Onwards

Girodisc caliper studs are a direct replacement for the OEM caliper bolts.

A must-have item for those who track or race their cars often. The factory bolts will quickly strip out the threads in the expensive wheel uprights, from removing the calipers for maintenance. These Cup-style caliper studs will eliminate this problem and quickly pay for themselves. They also allow for quicker and easier caliper installation by guiding the calipers into position. Manufactured from aerospace quality 17-4 PH stainless steel for high strength and corrosion resistance. One kit includes 4 studs, nuts, and washers, complete for one axle. Two kits are required for the front and rear.
These Brake caliper stud kits now include the highest quality available, ARP 12-point nuts. This is a no-compromise solution. Made from high-strength stainless steel, these nuts will not corrode, have a 180,000 PSI tensile strength, and are compact in size for a better fit in the brake caliper bore.

Please Note
If you are not familiar with, or confident that you understand how to replace the caliper bolts with studs please have a certified mechanic perform the installation.

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

BCS-06

The product you are viewing cross references to these numbers

Brake Disc / Rotor Slotted 2-pc FRONT




Fits:
This is a 350mm Upgrade with spacers & hardware
Porsche 997.2 C2 / C4
Porsche 991.1 C2 / C4
Porsche 981 Boxster S
Porsche 981 Cayman S
Porsche 718 Cayman 2.0L
Porsche 718 Boxster 2.0L
Kit Contains:
Brake Disc 350MM complete with centre bell.

Brake Disc Type: 2-Piece Slotted

The Girodisc brake rotor is a direct replacement for the OE discs, and provides significant performance benefits. The rotors are compatible with any of the current pads typically used with these cars.

Additional information:

Braking Performance: The rotor is a two-piece design developed in racing to produce a lightweight rotor that can compensate for the different expansion rates between the hat and rotor and eliminate the possibility of rotor warping.

The rotor and hat have a floating mount system, which utilizes 10 high strength alloy steel drive pins, which allows for axial and radial float.

More heat sink without a weight penalty: The Girodisc disc set weights in a little lighter than the OE system but with an important advantage. The rotors have grown in diameter. This means that weight has been transferred from the center hat were it does nothing to the outer diameter where it is actively absorbing and dispersing heat.

High Quality Materials: The Girodisc system uses only the highest quality materials and components. The rotors are high carbon content iron for long wear and stable thermal performance. The top hat section is machined from billet aluminum with an attractive anodized finish. The rotor rings are bright zinc plated to help prevent unsightly corrosion

This product is a special order item, allow 5 - 7 working days for delivery.

Brake Disc / Rotor Slotted 2-pc REAR




Fits:
This is a 325mm Upgrade with spacers & hardware for the following cars
Porsche 981 Boxster / S
Porsche 981 Cayman / S
Porsche 718 Boxster / S
Porsche 718 Cayman / S

Kit Contains:
Brake Disc 325MM complete with centre bell.

Brake Disc Type: 2-Piece Slotted

The Girodisc brake rotor is a direct replacement for the OE discs, and provides significant performance benefits. The rotors are compatible with any of the current pads typically used with these cars.

Additional information:

Braking Performance: The rotor is a two-piece design developed in racing to produce a lightweight rotor that can compensate for the different expansion rates between the hat and rotor and eliminate the possibility of rotor warping.

The rotor and hat have a floating mount system, which utilizes 10 high strength alloy steel drive pins, which allows for axial and radial float.

More heat sink without a weight penalty: The Girodisc disc set weights in a little lighter than the OE system but with an important advantage. The rotors have grown in diameter. This means that weight has been transferred from the center hat were it does nothing to the outer diameter where it is actively absorbing and dispersing heat.

High Quality Materials: The Girodisc system uses only the highest quality materials and components. The rotors are high carbon content iron for long wear and stable thermal performance. The top hat section is machined from billet aluminum with an attractive anodized finish. The rotor rings are bright zinc plated to help prevent unsightly corrosion

This product is a special order item, allow 5 - 7 working days for delivery.

Titanium Brake pad heat shields, Front.

This Product Fits:

Porsche 981, 718 Cayman base, S and GTS (2.5L turbo)
does not fit GT4 or GTS 4.0 cars

The problem of brake fluid boiling is simply traced 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 more as they don't usually have the extensive cooling duct and exotic brake materials as true racing cars. True racing only brake calipers generally come with titanium caliper pistons for one reason. Titanium as a material, has low thermal conductivity. This means that it is very bad at transferring heat. Which is good if you are trying to keep your fluid cool.

The Girodisc solution to help prevent fluid boiling is to use a thin titanium shim placed between the pad back and the pistons, to keep the braking heat from transferring into the pistons and fluid. Here is a comparison of materials and their relative thermal conductivity ratings:

Titanium 6AL-4V 6.7 W/mk
Steel 52 W/mk
Aluminum 130 W/mk

You can see that Titanium will transfer far less heat than steel and especially aluminum. For cars that are going to see hard or multiple track days, these shims are cheap protection from loosing the pedal due to boiling at the wrong time and making the day very expensive.

Water jet cut to exact size, no cutting, grinding, or swearing involved.

Price is per axle (four pieces)