FEULING ENDURANCE BEEHIVE valve springs are a direct bolt in replacement, no spring seat or rocker cover machining required. Endurance springs are 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 engines from stock to performance.
This FEULING BEEHIVE valve spring kit use the factory stee l retainers/Top Collar (HD#18100045).
Kits include: matched set of FEULING ENDURACE BEEHIVE valve springs, machined spring seats, seat shims, valve locks and a set of premium Viton valve seals equipped with a spring loaded valve stem wiper system.
Tech Tips:- THIS KIT USES THE FACTORY STOCK STEEL RETAINERS
