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Design 911 Design 911 supply Porsche parts, Porsche spares and Porsche accessories, to both retail and to the trade. Our Porsche product and accessory range includes brakes, exhausts, tyres, wheels and Porsche panels and interiors. https://design91.uk/images/schemaLogo.png https://design91.uk/images/schemaLogo.png +443456003478 https://design91.uk Facebook Instagram

GiroDisc

About GiroDisc

When GiroDisc was founded in 2003, we made it our mission to design and manufacture 2-piece brake rotors that would perform flawlessly at the limits. Our fully-floating design uses tension hardware to ensure that our rotors are silent on the street, but ready to go on the track.

By specializing in this area, we can dedicate our efforts to push our engineering and manufacturing to the highest levels in the industry. Porsche customers around the world have found success maximizing the capabilities of their existing brake systems by installing GiroDisc rotors. This often negates the need for a pricier, more complex upgrade like a big brake kit.

DISPLAYING 1 to 16 (of 78 products)
1 2 3 4 >>
Best Price
A1-306
Product Information
Product Information
Brake Disc / Rotor Slotted 2-pc FRONT, 
36mm thick


front
Fits:
Porsche 992 GT3 / GT3 RS -  excl. PCCB

Sold/priced per pair.
 
Note:  Stock photography may not depict actual product.

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

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Related, superseded, cross reference or alternative numbers for comparison.

A1-306
A1-306
9GT615301B
9GT615301G
9GT615301L
9GT615302B
9GT615302G

The product you are viewing cross references to these numbers
Best Price
D2-035S
Product Information
Product Information
REAR  replacement brake disc (325mm) - slotted.

Includes replacement hardware; the only parts you will reuse are your existing GiroDisc hats.

GiroDisc replacement rings are only designed to work with GiroDisc hats. They are not designed to be used with other brands, including hats from cars equipped with 2-piece rotors from the factory.

rear
Fits:
Porsche 981 Boxster / Boxster S
Porsche 981 Cayman / Cayman S
Porsche 718 Boxster / Boxster S
Porsche 718 Cayman / Cayman S


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

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Related, superseded, cross reference or alternative numbers for comparison.

D2-035S
D2-035
A2-035

The product you are viewing cross references to these numbers
Best Price
D1-153S
Product Information
Product Information
Front replacement brake disc (350mm) - slotted.

Includes replacement hardware; the only parts you will reuse are your existing GiroDisc hats.

GiroDisc replacement rings are only designed to work with GiroDisc hats. They are not designed to be used with other brands, including hats from cars equipped with 2-piece rotors from the factory.

front
Fits:
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

NOTE: This listing is for replacement discs specifically designed for vehicles already equipped with GiroDisc's two-piece rotor system. Please note that this product cannot be used as a standalone upgrade.

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

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

D1-153S
D1-153
A1-153

The product you are viewing cross references to these numbers
Best Price
TS-1741-4
Product Information
Product Information
Titanium Brake pad heat shields. Front Porsche 991, 992 , GT4   Price is per axle (four pieces)

This Product Fits:
front
Porsche 991 , 992  & GT4 

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.


Best Price
D1-154S
Product Information
Product Information
Front replacement brake disc (410mm) - slotted - for cars with PCCB and existing GiroDisc hats.

Includes replacement hardware; the only parts you will reuse are your existing GiroDisc hats.

girodisc

front
Porsche 981 Cayman GT4 / RS 2016 - w/ PCCB.
--
Porsche 718 (982) Cayman GT4 / RS 2019>> - w/ PCCB.
Porsche 718 (982) Boxster Spyder / RS 2019>> - w/ PCCB.
--
Porsche 991.2 Carrera / S / 4 / 4S / GTS / T 2017-19 - w/ PCCB.
Porsche 991 Turbo / Turbo S / GT2 RS 2014-20 - w/ PCCB.
Porsche 991 GT3 / GT3 RS 2014-21 - w/ PCCB.
--
Porsche 992.1 Carrera S / 4S / GTS 2019-24 - w/ PCCB.
Porsche 992 GT3 / GT3 RS 2021>> - w/ PCCB.

NOTE: This listing is for replacement discs specifically designed for vehicles already equipped with GiroDisc's two-piece rotor system. Please note that this product cannot be used as a standalone upgrade.

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

D1-154S
A1-154SL
A1-154SR
A1-156SL
A1-156SR

The product you are viewing cross references to these numbers
Best Price
D2-154S
Product Information
Product Information
Rear replacement brake disc (390mm) - slotted - for cars with PCCB and existing GiroDisc hats.

Includes replacement hardware; the only parts you will reuse are your existing GiroDisc hats.

girodisc

rear
Porsche 981 Cayman GT4 / RS 2016 - w/ PCCB.
--
Porsche 718 (982) Cayman GT4 / RS 2019>> - w/ PCCB.
Porsche 718 (982) Boxster Spyder / RS 2019>> - w/ PCCB.
--
Porsche 991.2 Carrera / S / 4 / 4S / GTS / T 2017-19 - w/ PCCB.
Porsche 991 Turbo / Turbo S / GT2 RS 2014-20 - w/ PCCB.
Porsche 991 GT3 / GT3 RS 2014-21 - w/ PCCB.
--
Porsche 992.1 Carrera S / 4S / GTS 2019-24 - w/ PCCB.
Porsche 992 GT3 / GT3 RS 2021>> - w/ PCCB.

NOTE: This listing is for replacement discs specifically designed for vehicles already equipped with GiroDisc's two-piece rotor system. Please note that this product cannot be used as a standalone upgrade.

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

D2-154S
A2-154SL
A2-154SR
A2-156SL
A2-156SR

The product you are viewing cross references to these numbers
Best Price
BRAKEKIT981GT4.F.GIR
Product Information
Product Information
Front brake pads and brake disc package. Porsche Cayman 981 GT4 Sebro
#girodisc# With Brembo brake pads

front
Porsche Cayman GT4 with steel disc

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

BRAKEKIT981GT4.F.GIR
98135140581
98135140681
99135194704

The product you are viewing cross references to these numbers
Best Price
D2-032S
Product Information
Product Information
Replacement brake disc Slotted - REAR

girodisc

rear
Replacement disc only 350mm Upgrade with spacers & hardware

Porsche 996 C4S
Porsche 996 Turbo
Porsche 997 C2 with Ceramic option
Porsche 997 C2S
Porsche 997 C4S

Porsche 997 Turbo
Porsche 997.2 C2 with Ceramic option
Porsche 987 Cayman S w/PCCB
Porsche 991 C2S w/PCCB
Porsche 991 C4S w/PCCB
Porsche 981 Boxster S w/PCCB
Porsche 981 Cayman S w/PCCB
Porsche 718 Boxster S w/PCCB
Porsche 718 Cayman S w/PCCB

Best Price
A1-291S
Product Information
Product Information
Brake Disc / Rotor Slotted 2-pc FRONT

girodisc

front
Fits:
Porsche 718 GT4 RS

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. 

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

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

A1-291S
98135140581
98135140681
98135140580
98135140680
9GT615301N
9GT615302N

The product you are viewing cross references to these numbers
Best Price
A2-126SLB
Product Information
Product Information
Brake Disc / Rotor Slotted 2-pc REAR

girodisc

rear
Fits:
Rear rotor: 350mm upgrade w/spacers & hardware
Porsche 996 GT3 Cup Car
Porsche 997 GT3 Cup Car

Kit Contains:
Brake Disc 350 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.
Best Price
A2-049SLB
Product Information
Product Information
Brake Disc / Rotor Slotted 2-pc REAR

girodisc

rear
Fits:
This is a 350mm Upgrade with spacers & hardware
Porsche 981 Spyder without PCCB
Porsche 982 Boxster GTS 4.0 without PCCB
Porsche 982C Cayman GTS 4.0 without PCCB

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.
Best Price
A2-032SLB
Product Information
Product Information
Brake Disc / Rotor Kit Slotted 2-pc REAR

girodisc

rear
Fits:
Porsche 996 GT2 without PCCB

Porsche 996 GT3 MKII without PCCB
Porsche 991.1 C2 / C4 / C2S / C4S 
without PCCB
Porsche 991.2 C2 / C4 / C2S / C4S without PCCB
Porsche 992 C2 / C4 / C2S / C4S without PCCB


The Girodisc system is a direct replacement for the OE disc on all 996 GT2/GT3's. No modifications are necessary. 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 Girodisc front rotors are approx 21.0 lbs vs. 25.6 lbs for the stock units. This reduction in rotational and unsprung weight allows for quicker acceleration and suspension response.

The central hat section of our rotor is made from strictly U.S. sourced 6061-T6 aircraft specification aluminum. The disc is made from our 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 10 high strength alloy steel drive pins, manufactured by Girodisc in the USA to our 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.

Sold/priced per pair

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

Best Price
A2-032SLA
Product Information
Product Information
Brake Disc / Rotor Kit Slotted 2-pc REAR

girodisc

rear
Fits:
Porsche 996 C4S

Porsche 996 Turbo without PCCB
Porsche 996.1 GT3
Porsche 997 C2 / C4 / C2S / C4S 
without PCCB
Porsche 997.2 C2 / C4 / C2S / C4S without PCCB


The Girodisc system is a direct replacement for the OE disc on all 996 GT2/GT3's. No modifications are necessary. 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 Girodisc front rotors are approx 21.0 lbs vs. 25.6 lbs for the stock units. This reduction in rotational and unsprung weight allows for quicker acceleration and suspension response.

The central hat section of our rotor is made from strictly U.S. sourced 6061-T6 aircraft specification aluminum. The disc is made from our 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 10 high strength alloy steel drive pins, manufactured by Girodisc in the USA to our 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.

Sold/priced per pair

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

Best Price
A1-019SLA
Product Information
Product Information
Brake Disc / Rotor Slotted 2-pc FRONT
Price is for set of 2

girodisc

front
Fits:
Porsche 996.1 GT3

The Girodisc system is a direct replacement for the OE disc on all 996 GT2/GT3's. No modifications are necessary. 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 Girodisc front rotors are approx 21.0 lbs vs. 25.6 lbs for the stock units. This reduction in rotational and unsprung weight allows for quicker acceleration and suspension response.

The central hat section of our rotor is made from strictly U.S. sourced 6061-T6 aircraft specification aluminum. The disc is made from our 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 10 high strength alloy steel drive pins, manufactured by Girodisc in the USA to our 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.

Sold/priced per pair

This product is a special order item, allow 5 - 7 working days for delivery.
Best Price
A1-032SLA
Product Information
Product Information
Brake Disc / Rotor Slotted 2-pc FRONT

girodisc

front
Fits:
This is a 350mm Upgrade with spacers & hardware

Porsche 996 C4S
Porsche 996 Turbo without PCCB
Porsche 997 C2 / C4 / C2S / C4S without PCCB

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 discs will fit cars with the Ceramic option from factory.

This product is a special order item, allow 5 - 7 working days for delivery.
Best Price
CS-12-100
Product Information
Product Information
Caliper spacer kit 12mm with 100mm bolts (Set B)

girodisc

Used with Girodiscs

DISPLAYING 1 to 16 (of 78 products)
1 2 3 4 >>