BMW Z4 E89 28i 30i Front Slotted Brake Discs USR1812R Pair - ATE Caliper Fit

For E89 Z4 28i and 30i models with ATE calipers only - no guesswork, no adapters, no compromises.

• USR1812R: exact part number for the front axle; slotted (not drilled), thermic black coated, made in the UK
• Fits E89 chassis with NA N20 and Turbo N20 engines - not for sDrive35is (N54) or later B58 swaps
• Stage 1 fast road or track day use: better fade resistance than stock, quieter than aggressive race discs
• No OEM-replacement framing - this is a performance upgrade, not a like-for-like swap
• Search terms covered: Z4 E89 slotted discs, USR1812R pair, ATE caliper brake rotors, fast road Z4 brakes, track day brake discs E89, N20 brake upgrade