Supports boost up to 48 psi and RPM up to 8500 RPM

30mm Exhaust   OEM

Thanks to the parts certificate

Their compact design allows for clearance in small inside-diameter valve springs

M20 CNC Cylinder Head Porting Camshaft Set Supports boost up to 485150 AutoSport 5 Axis CNC Cylinder Head Porting for BMW M20 Engines Please note that price is based on customer providing disassembled, clean core. If you need help sourcing a core, please contact our sales team. Also note that this service includes a 1 2 week turnaround time for service completion, beginning when the 5150 Team receives your head. Investing in cylinder head porting for your high performance BMW engine enhances airflow efficiency for