chain guides

this package ensures the stability and control your valvetrain needs—especially under boost and at high engine speeds

Relay Triggers

reduces detonation risk under boost

Access up to 30 auxiliary pins (when setup for a 4-cylinder sequential engine): 8 dedicated auxiliary pins

S65 Combustion Chamber Upgrade Service E61 chain guides5150 AutoSport Combustion Chamber Upgrade Service for BMW S65 V8 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