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Vehicle Fitment
Listed fitment: Porsche 911, Cayman, and Boxster 991, 991.2, 992, 992.2, 992.1, 981, and 982.
If you are unsure which Girodisc rotor fits your brake package, contact us before ordering.
GiroDisc GP40-1740.18 Porsche 911 / Cayman / Boxster Rear GP40 Sprint Race Brake Pads
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GiroDisc GP40-1740.18 rear sprint race pads cover the specified Porsche 991 and 992 brake systems, Cayman GT4 and listed 718 GT4, GT4 RS and Spyder applications. Use the exact rear reference alongside the vehicle and brake-option conditions shown in the application table.
GP40 is GiroDisc's sprint race compound, intended for circuit driving. Its character combines braking bite and pedal feedback with consideration for disc wear. Choose the compound as part of the complete braking setup, taking the car's use and fitted discs into account.
Key Features
- Exact GiroDisc reference: GP40-1740.18.
- Rear applications for the specifically listed 991, 992, GT4 and Spyder brake systems.
- GiroDisc GP40 sprint race compound.
- Balances braking bite, pedal feedback and consideration for disc wear.
Vehicle Fitment and Brake Setup
| Vehicle | Axle | Model years | Required brake setup |
|---|---|---|---|
| Porsche 911 Carrera, all (991.2) | Rear | with PCCB, front uses iron rotor pad shape | |
| Porsche 911 Carrera S/4S (992.2) | Rear | without PCCB, use 1741 GT3 front pad shape | |
| Porsche 911 Carrera GTS (992) | Rear | without PCCB, use 1741 GT3 front pad shape | |
| Porsche 911 Carrera S/4S/GTS (992.1) | Rear | with PCCB, front uses iron rotor pad shape | |
| Porsche 911 GT3/GT3 RS (991) | Rear | without PCCB | |
| Porsche 911 GT3/GT3 RS/GT2 RS (991) | Rear | with PCCB, front uses iron rotor pad shape | |
| Porsche 911 GT3 (992) | Rear | without PCCB | |
| Porsche 911 GT3 RS (992) | Rear | Front 36mm thick, without PCCB | |
| Porsche 911 GT3, GT3 RS (992) | Rear | with PCCB; iron-disc conversion application | |
| Porsche 911 Turbo/Turbo S (991) | Rear | excluding PCCB | |
| Porsche 911 Turbo/Turbo S (991) | Rear | with PCCB, front uses iron rotor pad shape | |
| Porsche 911 Turbo (992) | Rear | excluding PCCB, use 1741 GT3 front pad shape | |
| Porsche Cayman GT4 (981) | Rear | excluding PCCB | |
| Porsche Cayman GT4 (981) | Rear | with PCCB, front uses iron rotor pad shape | |
| Porsche 718 Cayman GT4, Boxster Spyder (982) | Rear | excluding PCCB | |
| Porsche 718 Cayman GT4, Boxster Spyder (982) | Rear | with PCCB, front uses iron rotor pad shape | |
| Porsche 718 Cayman GT4 RS (982) | Rear | excluding PCCB | |
| Porsche 718 Cayman GT4 RS (982) | Rear | with PCCB, front uses iron rotor pad shape | |
| Porsche 718 Spyder RS (982) | Rear | excluding PCCB | |
| Porsche 718 Spyder RS (982) | Rear | with PCCB, front uses iron rotor pad shape |
Brake compatibility: The applications offered here use the specified iron-disc brake arrangements. Where a car was originally equipped with PCCB, the corresponding iron-disc conversion is required. Match the installed caliper, disc and pad shape to the relevant application row before ordering. Rear caliper compatibility must be checked separately from the front pad-shape requirements that accompany some Porsche conversion entries.
The brake setup notes identify the complete vehicle configuration. Disc dimensions, caliper spacers or mounting hardware mentioned in an application are not additional items included with these pads or shields.
Product Specifications
| Part number | GP40-1740.18 |
| Brand | GiroDisc |
| Product type | Brake Pads |
| Axle | Rear |
| Compound | GP40 |
| Pad shape | 1740.18 |
Recommended Supporting Upgrades
Compatible disc configurations include A2-146 iron disc assembly, A2-154 iron disc assembly, A2-155 iron disc assembly, subject to the exact brake option in the fitment table.
Explore GiroDisc Porsche brakes and the complete GiroDisc range for supporting brake components.
Installation and Care
Have the pad profile, retaining hardware and disc condition checked before installation. Follow the brake pad manufacturer's bedding procedure with compatible discs, and inspect the calipers as part of the same brake service.
Contact us to confirm availability and lead time before ordering.
Product images may be illustrative. Use the part number and specifications to confirm the item required.
Product specifications
- Brand
- Girodisc
- Product type
- Brake Pads
- Part number / SKU
- GP40-1740.18
- Vehicle make
- Porsche
- Vehicle model
- 911, Cayman, and Boxster
- Vehicle variant
- 991, 991.2, 992, 992.2, 992.1, 981, and 982
Girodisc fitment can vary by factory brake package, disc diameter and caliper. Contact us with your registration or VIN and brake specification if you are unsure.
Warranty: Products are supplied with the applicable manufacturer warranty.
Shipping: We offer UK and worldwide shipping. Supplier-stock delivery estimates are shown above.
Returns: Special-order items may be subject to different cancellation/return conditions.
Klarna payment options are available at checkout where eligible.
Why buy from us?
Vehicle Fitment
Listed fitment: Porsche 911, Cayman, and Boxster 991, 991.2, 992, 992.2, 992.1, 981, and 982.
If you are unsure which Girodisc rotor fits your brake package, contact us before ordering.
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