Kelford S58 Valve Spring Kit Applications:

crankshaft pulley

Enhanced Performance Consistency:

Carrillo rods deliver the strength

S55 CNC Cylinder Head Porting Factory Kelford S58 Valve Spring Kit5150 AutoSport 5 Axis CNC Cylinder Head Porting for BMW S55 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