Only Compatible with AP Racing Renn Stop Kits (Not OEM BMW / Brembo) Fully floating two-piece Front 380x36mm disc. Designed for use with Renn Stop front kits. Designed for F8X (M2/M3/M4) platform Features:Bells CNC machined from aerospace grade 6082-T6 aluminiumLighter than OEM 380x30mm discLow cost of replacement EBC rotorsSlightly higher disc offset to maximise wheel / caliper clearance Supplied:2x CNC machined Renn Stop Front bells for F8X - M2/M3/M41x Left EBC 380x36mm rotor (with nuts, washers and anti-rattle springs)1x Right EBC 380x36mm rotor (with nuts, washers and anti-rattle springs)2x Stainless Steel Bobbin kits Items shipped separately so assembly is required (bobbins torqued 10-12Nm) For the full kit, you will also need:AP Racing Pro 5000 R Calipers - CP9660 or CP9668Front Caliper fixing kit / bracketsFront HEL Braided lines for AP CalipersPads of your choice Individual components made available separately for accessibility, but the full front kit is available here (with package discount)