• 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 and doesn't require machining or rocker box clearancing)
• Eliminates valve spring separation, maximizes stability, reduces valve-train noise and 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
• Machined from a premium grade Hi-tensile chrome silicon single conical ovate wire, shot-peened with a specially processed thermal heat treatment and super NexTex finish
• Kit includes 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
• Made in the USA

Seat lb / Installed Height :

• 198 lb @ 1.685 (0.535 Lift)
• 194 lb @ 1.703 (0.553 Lift)
• 190 lb @ 1.724 (0.574 Lift)
• 187 lb @ 1.754 (0.604 Lift)
• 185 lb @ 1.780 (0.630 Lift)
• 160 lb @ 1.800 (0.650 Lift)
• 375 lb @ 1.150 OPEN HEIGHT
• Coil Bind @ 1.100