High Load Beehive® valve springs deliver extreme fatigue life and proven track performance ⚙️.
Made from premium stress-relieved conical ovate wire with nitrided surface heat treatment, shot-peened surface enhancements and Nano Peen™ polish.
Includes a much smaller, lighter retainer to reduce valve weight, lightweight 10° titanium retainers, machined heat-treated chromoly spring seats, seat shims, valve locks and premium Viton® valve seals with a spring-loaded valve stem wiper system.
Designed to handle the highest demands of performance engines with high-lift, steep-ramped camshafts and allows up to 0.750" lift cams; no rocker box clearing required for many applications 🏁.
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".
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.
Valve springs must be installed at the correct open height, matching max lift to the open height spec of the valve springs. Dyno proven and track tested.
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