Precision CNC-machined and tested in RK’s Texas facility

Comes standard with an air-cooled

Performance Specifications

It's renowned for its use in various BMW models and for laying the foundation for the brand's later "M" performance engines

Assembled from valve cover to oil pan – fully turn-key

S58 Combustion Chamber Upgrade Service 11128644674 Precision CNC-machined and tested in5150 AutoSport Combustion Chamber Upgrade Service for BMW S58 Engines Please note that price is based on customer providing core. If you need help sourcing a core, please contact our sales team. Our CNC Cylinder Head Combustion Chamber Service is a precision machining process where the combustion chambers of an engine's cylinder head are reshaped and refined using Computer Numerical Control (CNC) technology, optimizing engine performance for street or