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

Upgrade your 12-valve Cummins valvetrain with our Conical Beehive Valve Springs, delivering 155 lbs of seat pressure to keep valves firmly under control up to 4,500rpm RPM or 65lbs of boost/drive pressure. This conical design offers enhanced stability for moderate cams and OEM-size valves, all the way up to 4,500 RPM.