Description
These GiroDisc 2-piece rotors are a direct replacement for the Ferrari 348 and 355. Weighing in at 14.3 lbs per rotor, these fully floating assemblies help shed unsprung weight and rotating mass from the front axle of the vehicle.
The rotor rings are machined from a proprietary casting made of high-carbon iron formulated to GiroDisc’s specifications. This superior metallurgy results in a rotor that holds up better, and the 30 curved vanes act as a centrifugal pump pulling air in through the hub to effectively cool the rotors under hard use. The 2-piece design means a reusable hat which can be attached to new rings (part number D1-002) when they need to be replaced.
All major components including the hats, rotor rings, and drive pins are manufactured in-house at our facility in Bellingham, WA from domestically sourced materials. The hat is made from 6061-T6 aluminum and coated in a black anodize finish. The drive pins are made from a high-strength steel alloy and cadmium-plated for corrosion resistance. All rotors are assembled with spring clips and Belleville washers for race-ready float while also being street-friendly with no noise from loose hardware.
The minimum thickness at which we recommend replacing these rings is 26mm. We also recommend replacing them if a crack leads to the edge of the ring.
Our replacement rings include replacement hardware. The only parts you will reuse are your existing GiroDisc hats.
Please note that unless specifically noted, 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.
Specifications:
| Manufacturer | Girodisc |
|---|---|
| Brakes Location | Front |
| OEM Disc Diameter (mm) | 300,0 |
| Disc Diameter (mm) | 300,0 |
| Disc Finish | Curved Slotted |
| Disc Height (mm) | 61,0 |
| Disc Contruction | 2-Piece Floating |
| Disc Side | Left/Right |
| Max Thickness | 28,0 |
| Min Thickness | 26,0 |
| Disc Vane Style | Curved Vane |
| Disc Type | Vented |
| Spare Parts | A1-002SL – GiroDisc 2-Piece Rotor Assembly; Left (A1-002SL) A1-002SR – GiroDisc 2-Piece Rotor Assembly; Right (A1-002SR) D1-002SL – GiroDisc 2-Piece Rotor Replacement Ring; Left (D1-002SL) D1-002SR – GiroDisc 2-Piece Rotor Replacement Ring; Right (D1-002SR) |
| Disc Quality | Premium |
| Material | Cast Iron |
Confirmed Applications
- Ferrari / 348 1989-1995 / Convertible 1993-1995 / 348 Spider 3.4 1993-1995
- Ferrari / 348 1989-1995 / Coupe 1989-1994 / 348 GTB 3.4 1993-1994
- Ferrari / 348 1989-1995 / Coupe 1989-1994 / 348 TB 3.4 1989-1993
- Ferrari / 348 1989-1995 / Targa 1989-1994 / 348 GTS 3.4 1993-1994
- Ferrari / 348 1989-1995 / Targa 1989-1994 / 348 TS 3.4 1989-1993
- Ferrari / F355 1994-1999 / Convertible 1995-1999 / F355 Spyder 3.5 1995-1999
- Ferrari / F355 1994-1999 / Coupe 1994-1999 / F355 Berlinetta 3.5 1994-1999
- Ferrari / F355 1994-1999 / Targa 1995-1999 / F355 GTS 3.5 1995-1999
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