Cams are not interchangeable without modifying the rest of the ignition system

(24) Titanium retainers

2009–2015     BMW F01/F02     750i/750Li

1996-1998     E38     728i / 728iL

Our heavy-duty iron sleeves offer the reliability you need to fully unleash your engine's potential

BMW M50 M52 S50 S52 Valve Spring Kit by Ferrea F21 Cams are not interchangeable withoutFerrea Valve Spring Kit BMW M50, M52, S50, S52 Engines 80lb Seat Pressure Increase valvetrain stability and eliminate performance robbing valve float with the Ferrea High Performance Valve Spring Kit, engineered specifically for BMW M50, M52, S50, and S52 engines. This kit is built to withstand the demands of high lift camshafts and sustained high RPM operationconditions where stock springs fall short. Designed for High RPM Performance With a seat