N55 Cylinder Head Service by 5150 AutoSport Service:Stage 1 and street/strip applications that push

and street/strip applications that push engines to their limits

All of our stroker kits come standard with skirt-coated pistons

and enhanced overall engine strength thanks to their use of advanced materials and manufacturing techniques

upgrading to Ferrea high-performance valve springs is crucial

Hand-built and precision blueprinted for accurate cut-off port travel

N55 Cylinder Head Service by 5150 AutoSport Service:Stage 1 and street/strip applications that push5150 AutoSport Performance Cylinder Head Services for BMW N55 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