BMW S38B38 Stroker Kit by 5150 AutoSport, 4.2L I4 - Acts as a thermal

- Acts as a thermal barrier that dissipates heat between the cylinder head and intake manifold

BM_BN54_0HS_5709B6S

All bearings measured with the new Mahr air gauge will not have marks on them

Choosing Supertech means investing in a brand renowned for quality and performance

G45-1125 (67mm)

BMW S38B38 Stroker Kit by 5150 AutoSport, 4.2L I4 - Acts as a thermalBigger 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