SSR PERFORMANCE DOUBLE-KEYED 4-PIN CRANK HUB BUNDLE FOR BMW M3 F80 M4 F82 F83 & M2 COMPETITION F87 S55 F87 4 Series / F32 /

4 Series / F32 / F33 / F36 (2014-2020) / 435i

5 Series / F07 / F10 / F11 (2010-2017) / 550i

1 Series / E82 / E88 (2007-2013) / 125i

2 Series / F44 (2019+) / 218i

SSR PERFORMANCE DOUBLE-KEYED 4-PIN CRANK HUB BUNDLE FOR BMW M3 F80 M4 F82 F83 & M2 COMPETITION F87 S55 F87 4 Series / F32 /DOUBLE KEYED CRANK HUB What is a Double Keyed Crank Hub? Failed or spun crank hubs have been reported throughout the S55 community on a regular basis, which has lead to valid concerns of the integrity of the factory hub, bolt and sprocket assembly. If a crank hub fails or spins it will cause the engine valve timing to skip or jump, potentially causing engine damage or failure. We have seen several of these through our workshop, we highly recommend