M20 Combustion Chamber Upgrade Service X3 3.0i this kit optimizes the rod-to-stroke

this kit optimizes the rod-to-stroke ratio for sustained high RPM applications

drawn entirely by hand

consistency

Whether you're running a big turbo or spinning the B46 to its upper RPM range

1998-2003     M5

M20 Combustion Chamber Upgrade Service X3 3.0i this kit optimizes the rod-to-stroke5150 AutoSport Combustion Chamber Upgrade Service for BMW M20 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