the world leader in fastener technology

and aggressive street builds

widen the power band

Engineered for up to 9500 RPM

BMW M50 M52 S50 S52 Stroker Kit by 5150 AutoSport M52 B28 the world leader in fastenerBMW M50 M52 S50 S52 Stroker Kit by 5150 AutoSport Bigger displacement, more torque and more power; Our 5150 AutoSport BMW M50 M52 S50 S52 Stroker Kits are specifically designed for BMW M5X S5X inline 6 Engines. Utilizing CP Carrillo Pro Xtreme Forged Pistons and Connecting Rods, as well as the 5150 4340 Billet Steel Crankshaft, our BMW M50 M52 S50 S52 Stroker Kit has stood up to the tests and trials of high horsepower application time and time again.