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.
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!
Available for 5/16 and 7mm valves
FEULING BEEHIVE valve springs must be installed at the correct OPEN HEIGHT, matching max lift to the open height spec of the valve springs
Kits include: FEULING ENDURACE BEEHIVE valve springs, lightweight 7 Degree 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
DISCLAIMER: NOT LEGAL FOR SALE OR USE IN CALIFORNIA ON ANY POLLUTION CONTROLLED MOTOR VEHICLES
Feuling does not recommend tuning beyond stock emissions standards.
Twin Cam 05-17, XL 04-17, XR 1200 09-17, 7 Degree, 7mm valve stem with stock triple keeper groove - Includes Springs, Ti Retainers, Seats, Seals, Keepers, seat shims
Disclaimer: This is a RACE ONLY part
Parts designated as Race Only are for use only on vehicles used for competition racing and are not for use on vehicles registered for use on public roads. Sale and/or installation of Race Only parts in any way inconsistent with this warning is prohibited and may result in enforcement by the U.S EPA under the federal Clean Air Act. RACE ONLY PARTS ARE NOT LEGAL FOR SALE IN CALIFORNIA ON ANY POLLUTION CONTROLLED MOTOR VEHICLES.
NOT LEGAL FOR SALE OR USE IN CALIFORNIA ON ANY EPA POLLUTION CONTROLLED MOTOR VEHICLE.