Seat Locator: SEAT-BMS54

SuperTech employs advanced computer modeling techniques to maintain optimal stress limits in their valve springs

With proven success on and off the track

these flywheels undergo Type 3 hard coat anodizing

making it less ideal for street use

BMW S58 3.4L Stroker Kit by 5150 AutoSport 11241307140 Seat Locator: SEAT-BMS54Bigger displacement, more TORQUE and more POWER. Our 5150 Autosport Bully Stroker kit is specifically designed for BMW S58 Engines. Utilizing CP Carrillo Pro Xtreme Forged Pistons and Pro Xtreme Rods, as well as the 5150 4340 Billet Steel Crankshaft, our stroker kits have stood up to the tests and trials of high horsepower applications time and time again. Benefits of Stroking an Engine With higher displacement, your engine will produce greater power