BMW S38B38 Stroker Kit by 5150 AutoSport, 4.2L I4 and an O-ring sealed dipstick

and an O-ring sealed dipstick

notably the turbocharged SR20DET variant

G45-1125 (67mm)

rocker tips

BMW S38B38 Stroker Kit by 5150 AutoSport, 4.2L I4 and an O-ring sealed dipstickBigger displacement, more torque and more power. Our 5150 Autosport 4. 2L Stroker kit is specifically designed for BMW S38B38 Euro engines. Utilizing CP Carrillo Forged Pistons and Carrillo or SP Components Forged Connecting Rods, as well as our 97mm Stroke 5150 AutoSport 4340 Billet Steel Crankshaft, this kit has stood up to the tests and trials of high horsepower application time and time again. We only sell you the products that we have used and