Inside Diameter: 1

F32 / F33 / F36  440i xDrive

90" OD runners

complete with a removable air duct for optimal airflow

the shafts can twist to at least 90 degrees

BMW S38B35/B36 4.2L Stroker Kit by 5150 AutoSport Compression Ratio:14:1 Inside Diameter: 1Bigger displacement, more torque and more power. Our 5150 Autosport 4. 2L Stroker kit is specifically designed for BMW S38B35 and S38B36 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