Reinforced crank hub for BMW engines. For N54 engine and for S55 / N55 engines. Stock crank hubs in these engines are common problems when reaching for higher power. It tends to break or spin independently causing severe damage to the engine. Our upgrade solution is made for high quality materials, tested by our racing drivers and keeps your eingine chain moving correctly and safely. Drill and new crank bolt is included.
Updated version with 4 pins now ! (pictures is comming)