Feuling has developed new high load premium performance BeeHive valve springs for steep ramped large lift camshafts These valve springs are made from premium stress relieved conical ovate wire with a nitride surface heat treatment, shot-peened surface enhancements along with a Nano Peen polish They have an extremely high level of fatigue life and are designed to handle the highest demands of performance engines Dyno proven and track tested Kits include: Feuling High Load BeeHive valve springs, lightweight 10° Titanium retainers manufactured from special Ti-17 alloy that are micro polished for enhanced fatigue life, machined heat treated chrome moly spring seats and valve locks and a set of premium Viton valve seals equipped with a spring loaded valve stem wiper system Spring pressures are 215 lb. at .585" lift, 200 lb. at .635" lift, and 185 lb. at .685" lift 10°, 7mm valve stem with stock triple keeper groove