Made from premium stress-relieved conical ovate wire with nitrided surface heat treatment, shot-peened surface enhancements and Nano Peen polish
Uses a much smaller and lighter weight retainer to reduce valve weight and create quicker rev and smoother motion
Designed to handle the highest demands of performance engines with high-lift, steep-ramped camshafts
Allows up to 0.750" lift cams; no rocker box clearing required
Features extremely high level of fatigue life
Dyno proven and track tested
Kit includes High-Load BeeHive valve springs, lightweight 10° Titanium retainers manufactured from Ti-17 alloy and micropolished for enhanced fatigue life, machined heat-treated chromoly spring seats, seat shims, valve locks and a set of premium Viton valve seals equipped with spring-loaded valve stem wiper system
Made in the USA
Seat lb/installed height:
170 lb at 1.935" (0.720" lift)
185 lb at 1.900" (0.685" lift)
200 lb at 1.845" (0.630" lift)
208 lb at 1.819" (0.604" lift)
215 lb at 1.800" (0.585" lift)
217 lb at 1.789" (0.574" lift)
415 lb at 1.215" open height
Coil bind at 1.125"
Valve springs must be installed at the correct OPEN HEIGHT, matching max lift to the open height spec of the valve springs.
Feuling BeeHive valve spring kit is direct replacement with no machining or rocker box clearance required. Up to .574" lift for '84-'04 Big Twin and '86-'03 XL and up to .700" lift for '05-'17 Twin Cam. Larger camshafts require valve guide machining for seal-to-retainer clearance.