Feuling 1201 High-Load Beehive Valve Springs - 5/16in. Valve Stem and Keeper Groove and .530in. Dia. Valve Guides

Demon’s Part # 99481852 Mfg. Part # 1201

$319.95

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Feuling High-Load Beehive Valve Springs - 5/16in. Valve Stem and Keeper Groove and .530in. Dia. Valve Guides

Made from premium stress-relieved conical ovate wire with nitrided surface heat treatment, shot-peened surface enhancements and Nano Peen polish. Feature extremely high level of fatigue life. Use a much smaller and lighter weight retainer to reduce valve weight and create quicker rev and smoother motion. Designed to handle the highest demands of performance engines with high lift, steep ramped camshafts. Allow up to 750in lift cams; no rocker box clearancing required. Available for 5/16in and 7mm valves. Kits include: High-Load BeeHive valve springs, lightweight 10 degree Titanium retainers manufactured from Ti-17 alloy and micropolished for enhanced fatigue life, machined heat treated chromoly spring seats, seat shims and valve locks and a set of premium Viton valve seals equipped with spring loaded valve stem wiper system. Spring pressures are 200 lb. at 1.850in (.635in lift), 185 lb. at 1.900in (.685in lift), 415 lb. at 1.215in and coil bind at 1.125in. Dyno proven and track tested. Made in the USA Made from premium stress-relieved conical ovate wire with nitrided surface heat treatment, shot-peened surface enhancements and Nano Peen polish. Feature extremely high level of fatigue life. Use a much smaller and lighter weight retainer to reduce valve weight and create quicker rev and smoother motion. Designed to handle the highest demands of performance engines with high lift, steep ramped camshafts. Allow up to 750in lift cams; no rocker box clearancing required. Available for 5/16in and 7mm valves. Kits include: High-Load BeeHive valve springs, lightweight 10 degree Titanium retainers manufactured from Ti-17 alloy and micropolished for enhanced fatigue life, machined heat treated chromoly spring seats, seat shims and valve locks and a set of premium Viton valve seals equipped with spring loaded valve stem wiper system. Spring pressures are 200 lb. at 1.850in (.635in lift), 185 lb. at 1.900in (.685in lift), 415 lb. at 1.215in and coil bind at 1.125in. Dyno proven and track tested. Made in the USA Feuling Beehive valve spring kits are direct replacement with no machining or rocker box clearance required up to .574in lift for 84-04 Big Twin and 86-03 XL and up to .700in lift for 05-11 Twin Cam. Larger camshafts require valve guide machining for seal to retainer clearance. SEAT Lbs. / INSTALLED HEIGHt. 217 Lbs @ 1.789 (0.574 Lift).215 Lbs @ 1.800 (0.585 Lift).208 Lbs. @ 1.819 (0.604 Lift).200 Lbs @ 1.845 (0.630 Lift).185 Lbs @ 1.900 (0.685 Lift).170 Lbs @ 1.935 (0.720 Lift).415 Lbs @ 1.215 OPEN HEIGHt. Coil Bind @ 1.125. DISCLAIMER: NOT LEGAL FOR SALE OR USE IN CALIFORNIA ON ANY POLLUTION CONTROLLED MOTOR VEHICLEs.