FEULING PARTS Valve Spring Kit - Steel Retainers - For 7.00 mm Valve Stem - Twin Cam 1121

Valve Spring Kit - Steel Retainers - For 7.00 mm Valve Stem - Twin Cam Made from heat treated chromoly conical ovate wire, Hand measured and labeled specifically based on their coil bing / required open height, Uses a much smaller and lighter weight retainer to reduce valve weight and create quicker rev and smoother motion, Dyno proven and track tested, Kit includes: Econo BeeHive® valve springs, lightweight 7° steel or titanium retainers, machined heat-treated chromoly spring seats, seat shims, valve locks and a set of premium Viton® valve seals equipped with spring-loaded valve stem wiper system, Up to 0.585" lift, Seat lb / installed height:, 183 lb @ 1.760" (0.510" lift), 175 lb @ 1.785" (0.535" lift), 172 lb @ 1.803" (0.553" lift), 165 lb @ 1.825" (0.574" lift), 163 lb @ 1.835" (0.585" lift), 380 lb @ 1.250" Open Height, Coil Bind @ 1.180", Made in the USA, Feuling® BeeHive® valve springs must be installed at the correct open height, matching max lift to the open height spec of the valve springs., Econo BeeHive® kit is direct replacement with no machining or rocker box clearance required for cams up to 0.574" lift for '84-'04 Big Twin and '86-'03 XL and up to .585" lift for '05-'17 Twin Cam.