Hack Engineering floating rear brake discs for F87 M2/M2 Competition, F80 M3 and F82/F83 M4. Direct replacement for BMW part numbers 34212284811 (left) and 34212284812 (right).

These two-piece rotors offer a huge braking upgrade for all fast road and track F8Xs. By using a high-carbon, high-copper G3500 rotor alloy, friction is optimised while the two-piece design reduces weight and improves cooling. EBC’s patented billet stainless steel SD-Drive bobbins with anti-rattle springs remove the compromise often associated with two-piece rotors, allowing the use of a hard-anodised billet alloy bell. This bell is of course laser-etched with the Hack Engineering logo and can be re-used, meaning that only the outer rotor needs to be replaced in future. Includes integrated CNC-machined handbrake drum.

Priced per pair. Designed, tested and manufactured in the UK.