These rotors are designed for the UUC/Wilwood big brake kits for applications originally using a 325mm x 28mm rotor. Minimal unswept area, lighter weight than standard E46 M3 rotors used in these kits.
A 2-piece rotor design allows the disk portion to expand
radially with heat, separate from the cooler mounting hat. This reduces stress-induced deformation of the disk due to differences in temperature between disk and hat. The net result is more effective braking and longer lifespan of pad and rotor components.
Features:
- Precision machining for minimal runout and thickness variation.
- Race-proven metallurgy.
- Directional curved vanes maximize cooling air flow and prevent
thermal distortion.
- Made from High Carbon Alloy with copper and molybdenum for high
temperature strength and stability
- Vanes are turned on both ID and OD surfaces to reduce thermal
warping and vibration
- Directional slotting for faster water and pad gassing removal,
and visual wear indicator.
- Uses standard BMW rotor retaining bolt.
- Rebuildable with new rotor discs.
- Hats anodized in gunmetal gray color.
Replacement disk/hat and disk-only also available in either left or right.
