2019-Present  F98  X4M

Garrett G42-1200 Turbocharger

drill and tap the four outer 9mm holes in the engine block to accommodate 11mm studs and ensure even pressure distribution

Supertech High Performance Exhaust Valves

1992 - 1999     E36 M3

N55 Combustion Chamber Upgrade Service E39 M5 2019-Present F98 X4M5150 AutoSport Combustion Chamber Upgrade Service 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. 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