Upgrade your BMW N55 or S55 engine with the Ferrea Valve Kit for greater strength

External and Internal E-throttle Control

pair your head gasket with ARP2000 201-4305 Head Studs

5150 is introducing the tested

Radium DMR fuel pressure regulator can be used on either end

Radium Engineering RA-Series Fuel Cell Size:22 Gallon Upgrade your BMW N55 orA competition grade fuel cell provides maximum performance and safety for high performance vehicles. The Radium RA series fuel cells are designed and manufactured by Radium Engineering to meet top safety requirements set forth by the worldwide safety organizations FiA and SFI. These fuel cells are excellent for all types of motorsports disciplines including road racing, time attack, drifting, rally, off road racing, endurance, and many more. The large