Endurance BeeHive Valve Spring Kit

These springs are meticulously crafted from premium-grade hi-tensile chrome silicon single conical ovate wire. They undergo a shot-peening process, specialized thermal heat treatment, and a super NexTex finish, all contributing to superior fatigue life required for high-performance applications. Each comprehensive kit contains Feuling Endurance Beehive valve springs, exceptionally lightweight 7-degree super Titanium heat-treated retainers, precision-machined chromoly spring seats, valve locks, and a set of premium Viton valve seals. These seals are equipped with a spring-loaded valve stem wiper system to ensure optimal function and longevity. The springs are designed to support camshafts with lifts up to .650 inches, eliminating the need for spring seat machining or rocker box clearancing. They offer spring pressures of 185 lb. at .635 in. of lift and 160 lb. at .650 in. of lift, contributing to a quicker revving and smoother engine operation compared to traditional dual valve springs. The kit components are manufactured in the U.S.A. Feuling emphasizes precise setup, stating that these kits require measurement of the installed height, and may need included shims to tailor the springs specifically to your camshaft lift. This attention to detail promotes quieter, smoother performance, akin to tuning suspension for individual rider weight and style. The smaller, lighter retainers significantly reduce valve weight, further enhancing quicker revving and smoother motion. The kit includes everything needed for installation: springs, retainers, seats, seat shims, valve locks, and Viton valve seals. This product is not for sale in California (US-CA).