FEULING® ENDURANCE BEEHIVE® valve springs are a direct bolt in replacement up to 650 lift camshafts no spring seat machining required. Machined from a premium grade Hi-tensile chrome silicon single conical ovate wire, shot-peened with a specially processed thermal heat treat and super NexTex® finish to give these valve springs the needed fatigue life to exceed the high demands of V-Twin engines from stock to performance.
Kits include: FEULING® ENDURACE BEEHIVE® valve springs, lightweight 7° Titanium heat treated retainers, machined spring seats, seat shims, valve locks and a set of premium Viton® valve seals equipped with a spring loaded valve stem wiper system.
Dont get stung by inferior valve springs!
Quicker Revving - Smoother Motion - Light Weight Ti Retainers - Bolt in up to 650 Lift
SEAT Lbs. / INSTALLED HEIGHT
198 Lbs. @ 1.685 (0.535 Lift)
194 Lbs. @ 1.703 (0.553 Lift)
190 Lbs. @ 1.724 (0.574 Lift)
187 Lbs. @ 1.754 (0.604 Lift)
185 Lbs. @ 1.780 (0.630 Lift)
160 Lbs @ 1.800 (0.650 Lift)
375 Lbs @ 1.150 OPEN HEIGHT
Coil Bind @ 1.100
- FEULING® BEEHIVE® valve springs use a much smaller and lighter weight retainer which drastically reduces the valve weight creating a much quicker revving and smoother motion than comparable dual valve springs.
- FEULING® endurance springs are a direct bolt-in replacement up to 650 cam lift no machining or rocker box clearancing required.
- Eliminate valve spring separation, maximize stability, reduce valve-train noise & harmonics!
- FEULING® BEEHIVE® valve springs must be installed at the correct OPEN HEIGHT, matching max lift to the open height spec of the valve springs