Conical Beehive Valve Springs (155 lbs Seat Pressure) Retainers & Locks Included

Upgrade your 12-valve Cummins valvetrain with ourConical Beehive Valve Springs, delivering155 lbs of seat pressureto keep valves firmly under control up to 4,500rpmRPMor65lbsof boost/drive pressure. This conical design offers enhanced stability formoderate camsandOEM-size valves, all the way up to4,500 RPM.