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Fitment notes and restrictions
Description
Refresh worn friction rings while retaining the matching GiroDisc hats
GiroDisc D1-152 is a pair of slotted 370x32mm front replacement rings for supported Audi TT RS and RS3 applications already equipped with matching GiroDisc A1-152 hats. New assembly hardware is included so the service does not require purchasing complete two-piece rotors.
Key Features
- Sold as a matched pair for the front axle
- 370mm outer diameter and 32mm nominal thickness
- Slotted friction surfaces for the supported GiroDisc two-piece rotor system
- Replacement ring-to-hat hardware is included
- Reuses existing serviceable GiroDisc A1-152 hats
- Not compatible with factory hats or another manufacturer's hats
- Exact GiroDisc application is identified by manufacturer part number D1-152
Application details and restrictions
| Years / Scope | Make | Model / Component | Requirement |
|---|---|---|---|
| 2010-2013 | Audi | TT RS (8J) | Vehicle must already use matching GiroDisc A1-152 front hats |
| 2011-2012 | Audi | RS3 Sportback (8P) | Vehicle must already use matching GiroDisc A1-152 front hats; application was not sold in the United States |
These are replacement rings and assembly hardware, not complete rotors. The existing matching GiroDisc A1-152 hats must be reused and must be serviceable. GiroDisc states that the rings do not fit factory hats or hats made by another manufacturer.
Specifications
| Detail | Value |
|---|---|
| Manufacturer Part Number | D1-152 |
| Product Type | Front replacement friction rings |
| Quantity | Pair |
| Axle | Front |
| Outer Diameter | 370mm |
| Nominal Thickness | 32mm |
| Surface | Slotted |
| Required Hat | Existing matching GiroDisc A1-152 hat |
| Complete Rotor Assembly | No |
What's Included
- GiroDisc D1-152: Two GiroDisc front replacement friction rings
- New replacement hardware for assembling both rings to the matching hats
- GiroDisc A1-152 hats are not included and must be reused
About GiroDisc
GiroDisc develops two-piece brake rotor systems and service components for performance road and motorsport applications. These rings are manufactured as replacement wear components for the specified GiroDisc hat and vehicle applications, not as universal rings or complete rotors.
Related Parts
- No related store product is linked because supporting components must be verified for the exact vehicle, engine, transmission, and current GiroDisc configuration.
FAQ
What is the D1-152?It is front brake rotor replacement rings for the exact application and restrictions shown above.
Is this a complete rotor set?No. The package contains replacement friction rings and new assembly hardware; the matching existing GiroDisc hats must be reused.
Which hats are required?The vehicle must already have serviceable GiroDisc A1-152 front hats.
Will the rings fit factory rotor hats?No. GiroDisc states that they are not compatible with factory hats.
Will they fit another brand's two-piece hats?No. GiroDisc states that these rings are only for the matching GiroDisc hats.
How many rings are included?Two front friction rings are included as a pair.
Is new ring hardware included?Yes. Replacement assembly hardware for both rings is included.
What are the ring dimensions?GiroDisc identifies the rings as 370mm in outer diameter and 32mm in nominal thickness.
Installation Instructions
- Confirm the vehicle application, existing serviceable GiroDisc A1-152 hats, and GiroDisc D1-152 part label before disassembly.
- Read the current GiroDisc ring-replacement and vehicle brake-service instructions completely before removing the front brake assemblies.
- Have a qualified brake technician remove the calipers and rotor assemblies using the vehicle manufacturer's service procedure.
- Disassemble each used ring from its GiroDisc hat and discard the old ring-to-hat hardware; do not reuse the removed hardware.
- Clean and inspect each hat for damage, wear, distortion, or an unsuitable mounting surface, and replace any hat that fails inspection.
- Assemble each new ring to the matching hat with the supplied hardware, following GiroDisc's current tightening sequence and torque specification without substituting invented values.
- Reinstall the rotor assemblies and calipers, then verify fastener torque, rotor runout, pad contact, and component clearance according to the applicable service information.
- Complete GiroDisc's current bedding procedure and recheck the brake system for proper operation before normal driving.
