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Vehicle Fitment
Listed fitment: Porsche 911, Cayman, and Boxster 991 and 982.
If you are unsure which Girodisc rotor fits your brake package, contact us before ordering.
GiroDisc A1-154 Porsche GT3 / GT2 RS / GT4 RS PCCB Conversion Front 2-Piece Brake Discs
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GiroDisc A1-154 front 2-piece brake discs are for Porsche GT3 / GT2 RS / GT4 RS PCCB Conversion. Select them by the exact vehicle and brake setup below, including any required disc conversion, caliper spacing or pad shape.
Each assembly combines a reusable aluminium centre bell with a replaceable cast-iron friction ring. The floating mounting system allows movement between the bell and ring as temperatures change, while curved internal vanes carry cooling air through the disc. This construction also lets you renew worn rings without replacing serviceable centre bells.
Key Features
- Complete 2-piece floating disc assembly with aluminium centre bell and cast-iron ring
- Front axle application for the specified Porsche brake configurations
- Replaceable friction rings for future disc servicing
- Vehicle, caliper and pad requirements shown in the fitment table
Vehicle Fitment and Brake Setup
| Vehicle | Axle | Model years | Required brake setup |
|---|---|---|---|
| Porsche 911 GT3/GT3 RS/GT2 RS (991) | Front | with PCCB, front uses iron rotor pad shape | |
| Porsche 718 Cayman GT4 RS (982) | Front | with PCCB, front uses iron rotor pad shape | |
| Porsche 718 Spyder RS (982) | Front | with PCCB, front uses iron rotor pad shape |
Product Specifications
| Part number | A1-154 |
| Brand | GiroDisc |
| Product type | 2-Piece Brake Discs |
| Axle | Front |
Recommended Supporting Upgrades
When the friction rings need renewing, use D1-154 replacement rings for the corresponding assembly and brake configuration.
For a complete axle-by-axle brake refresh, compare A2-154 rear discs. Check the brake option in each listing before combining parts.
Explore GiroDisc Porsche brakes and the complete GiroDisc range for supporting brake components.
Installation and Care
Install the left and right discs in the direction specified by GiroDisc. Follow the supplied fitting and bedding instructions, inspect pad-to-bell clearance and check the complete brake setup before use. Observe the minimum thickness marked on the disc and inspect the friction surfaces during routine brake servicing.
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 Discs
- Part number / SKU
- A1-154
- Vehicle make
- Porsche
- Vehicle model
- 911, Cayman, and Boxster
- Vehicle variant
- 991 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 and 982.
If you are unsure which Girodisc rotor fits your brake package, contact us before ordering.
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