Beehive valve springs with lightweight titanium retainers for use with billet cams. 80 seat pounds and 240 pounds @.500 max lift. To be used with stainless valves and roller rockers. Safe for 9500+ rpm

NOTE*** When using these springs with oem stamped steel rockers, rockers may fail. Please use appropriate locks that are included in the kit. Always run .060’’ clearance between max lift and coil bind.