GiroDisc rear rotors for the BMW 335i (E9X). The GiroDisc system is a direct replacement for the OE disc. No modifications are necessary, and the disc bolts directly to the car and works with OE calipers.
Key Features
- Curved vane design, developed in racing to act as a centrifugal pump that forces cooling air through the disc
- Floating mount system keeps the axial and radial float between the hat and disc and lets the rotor self centre between the pads
- Anti-noise spring washers on the rotor side allow for heat expansion and eliminate the rattle associated with floating rotors
- Once the GiroDisc system is in place, simply replace the cast iron rotor when needed
Specifications
- Hat material: U.S. sourced 6061-T6 aircraft specification aluminium
- Disc material: GiroDisc's own proprietary cast iron, poured in the USA and machined in house
- Drive pins: 10 high strength alloy steel, cadmium plated for corrosion resistance, made in the USA
- Pin fasteners: Class 12.9 cap screws with hardened washers
- Supplied as: Sold in pairs
