MMX Performance One-Piece Crank Hub Upgrade Kit - BMW S55 / N55The MMR Performance One Piece Crank Hub Upgrade Kit is the definitive solution to one of the most notorious weaknesses in BMWs S55 and N55 enginesthe OEM three piece crank hubs tendency to slip under load. In the factory design, the friction plate can rotate independently, altering timing just enough to risk piston to valve contact and catastrophic engine damage. Whether on a completely stock car or a high powered build, this upgrade replaces the
Shopping security
Each payment you make on thelockerguy is secured with strict SSL encryption and PCI DSS data protection protocols