Feuling Beehive Valve Spring Kit Econo (1121)

ECONO

• Available for 5/16" and 7mm valves.
• Seat lbs./installed height; 183 lb. at 1.770" (0.510" lift), 175 lbs. at 1.795" (0.535" lift), 172 lbs. at 1.813" (0.553" lift), 165 lbs. at 1.835" (0.574" lift), 160 lbs. at 1.845" (0.585" lift), 380 lb. at 1.260" OPEN HEIGHT coil bind at 1.190"
• Kits include: Econo BeeHive® valve springs, lightweight 7° steel retainers, machined heat-treated chromoly spring seats, seat shims, valve locks and a set of premium rubber coated valve seals equipped with spring-loaded valve stem wiper system.
• Designed to handle the demands of performance engines with 585" and smaller lift camshafts.
• Feuling® BeeHive® valve springs must be installed at the correct OPEN HEIGHT, matching max lift to the open height spec of the valve springs.
• Dyno proven and track tested.
• Feature extremely high level of fatigue life.
• Made from premium stress-relieved conical ovate wire.
• Made in the U.S.A.
• Use a much smaller and lighter weight retainer to reduce valve weight and create quicker rev and smoother motion.

ENDURANCE

• Direct bolt-in replacement up to 650" cam lift; no machining or rocker box clearancing required.
• Shot-peened with specially processed thermal heat treat and super NexTex® finish for fatigue life needed to exceed high demands of V-Twin engines.
• Machined from premium-grade hi-tensile chrome silicon single conical ovate wire.
• Feuling® BeeHive® valve springs must be installed at the correct OPEN HEIGHT, matching max lift to the open height spec of the valve springs.
• Made in the U.S.A.
• Kits include: Endurance BeeHive® valve springs, lightweight 7° super Titanium heat-treated retainers, machined spring seats, seat shims, valve locks and a set of premium rubber coated valve seals equipped with spring-loaded valve stem wiper system.
• Available for 5/16" and 7mm valves.
• Seat lbs./installed height; 198 lbs. at 1.685" (.535" lift), 194 lbs. at 1.703" (.553" lift), 190 lb. at 1.724" (.574" lift), 187 lbs. at 1.754" (.604" lift), 185 lbs. at 1.780" (.630" lift), 160 lbs. at 1.800" (.650" lift), 375 lb. at 1.150" (open height) coil bind at 1.100".
• Use a much smaller and lighter weight retainer to reduce valve weight and create quicker rev and smoother motion.

HIGH-LOAD

• Made from premium stress-relieved conical ovate wire with nitrided surface heat treatment, shot-peened surface enhancements and Nano Peen™ polish.
• Seat lbs./installed height; 217 lbs. at 1.789" (.574" lift), 215 lbs. at 1.800" (.585" lift), 208 lbs. at 1.819" (.604" lift), 200 lbs. at 1.845" (.630" lift), 185 lbs. at 1.900" (.685" lift), 170 lbs. at 1.935" (.720" lift), 415 lbs. at 1.215" (open height) coil bind at 1.125"
• Use a much smaller and lighter weight retainer to reduce valve weight and create quicker rev and smoother motion.
• Kits include: High-Load BeeHive® valve springs, lightweight 10° Titanium retainers manufactured from Ti-17 alloy and micropolished for enhanced fatigue life, machined heat-treated chromoly spring seats, seat shims, valve locks and a set of premium rubber coated valve seals equipped with spring-loaded valve stem wiper system.
• Designed to handle the highest demands of performance engines with high-lift, steep-ramped camshafts.
• Made in the U.S.A.
• Feuling® BeeHive® valve springs must be installed at the correct OPEN HEIGHT, matching max lift to the open height spec of the valve springs.
• Available for 5/16" and 7mm valves.
• Allow up to 750" lift cams; no rocker box clearancing required.
• Dyno proven and track tested.
• Feature extremely high level of fatigue life.