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Vehicle Fitment
Listed fitment: Porsche 911, Boxster, and Cayman 996, 997, 997.1, 986, 987, 987.2, and 981.
If you are unsure which Girodisc rotor fits your brake package, contact us before ordering.
GiroDisc D1-031 Porsche 340mm Front Replacement Brake Disc Rings
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GiroDisc D1-031 front replacement brake disc rings renew the friction surfaces of the compatible GiroDisc assemblies fitted to the listed Porsche 911, Cayman and Boxster brake configurations. They are intended for an existing 2-piece disc installation with the correct reusable centre bells.
Replacing the cast-iron friction rings lets you retain serviceable aluminium bells while renewing the working disc surfaces. Match the full ring part number and the compatible assembly listed below; similar diameter, appearance or vehicle model alone does not confirm the bell interface.
Key Features
- Replacement cast-iron friction rings for the specified GiroDisc assemblies
- Front axle applications shown below
- Existing matching GiroDisc centre bells required
- Pair of rings with replacement mounting hardware
Vehicle Fitment and Brake Setup
| Vehicle | Axle | Model years | Required brake setup |
|---|---|---|---|
| Porsche 911 Carrera/C4 (996/997.1) | Front | Front/rear 340/325mm with spacers & hardware | |
| Porsche Boxster S (986) | Front | Front/rear 340/325mm with spacers & hardware | |
| Porsche Cayman (987.2) | Front | Base, Front/rear 340/325mm with spacers & hardware | |
| Porsche Cayman S/R (987) | Front | Front/rear 340/325mm with spacers & hardware | |
| Porsche Cayman/Boxster (981) | Front | Base, Front/rear 340/325mm with spacers & hardware |
These are replacement rings rather than complete brake discs. They require the specified GiroDisc centre bells and must not be fitted to factory or other centre bells unless expressly approved for this exact part number.
Product Specifications
| Part number | D1-031 |
| Brand | GiroDisc |
| Product type | Replacement Brake Disc Rings |
| Axle | Front |
| Diameter | 340mm |
| Sold as | Pair of replacement rings |
| Centre bells | Existing compatible GiroDisc bells required |
| Hardware | Replacement mounting hardware included |
Recommended Supporting Upgrades
These rings service the matching A1-031 complete disc assembly, A1-035 complete disc assembly. Each application uses the correct centre bell for that assembly.
Explore GiroDisc Porsche brakes and the complete GiroDisc range for supporting brake components.
Installation and Care
Inspect the retained centre bells before reusing them. Fit the new mounting hardware supplied with the ring kit and follow GiroDisc's ring assembly instructions, including orientation and tightening sequence. Check clearances and complete the required bedding process with suitable pads before using the rebuilt discs.
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
- Replacement Brake Rings
- Part number / SKU
- D1-031
- Vehicle make
- Porsche
- Vehicle model
- 911, Boxster, and Cayman
- Vehicle variant
- 996, 997, 997.1, 986, 987, 987.2, and 981
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, Boxster, and Cayman 996, 997, 997.1, 986, 987, 987.2, and 981.
If you are unsure which Girodisc rotor fits your brake package, contact us before ordering.
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