S55 Cylinder Head Service by 5150 AutoSport 540 so you can see just

so you can see just how much power is being used

2020-Present     G20/G21     M340i / M340i xDrive

1977 - 1982       BMW E21       320i

making it necessary for stroker

BMW 550i xDrive V8 (4

S55 Cylinder Head Service by 5150 AutoSport 540 so you can see just5150 AutoSport Performance Cylinder Head Services for BMW S55 Engines Please note that price is based on customer providing core. If you need help sourcing a core, please contact our sales team. Investing in a performance cylinder head service is crucial for optimizing engine potential in performance builds. We offer three levels of service to meet your budget and build goals, from OEM refresh to full race level machining: Stage 1 OEM Refresh (Rebuild