Feuling ENDURANCE BEEHIVE High Load Valve Springs for '17-Up Harley Davidson M-Eight Engines
FEULING HIGH LOAD BEEHIVE valve springs are a direct bolt in replacement, no spring seat or rocker cover machining required up to 0.565 lift. These springs will accommodate over 0.600 cam lift but will require spring seat pocket machining on the cylinder heads to set correct spring open height. Milwaukee Eight HIGH LOAD springs are machined from a premium grade Hi-tensile chrome silicon single conical ovate wire, shot-peened with a specially processed thermal heat treat and super NexTex finish to give these valve springs the needed fatigue life to exceed the high demands of V-Twin engines from stock to performance.
• FEULING BEEHIVE valve springs use a smaller lighter weight retainer which drastically reduces the valve weight creating a quicker revving and smoother motion than comparable dual or single valve springs.
• Eliminate valve spring separation, maximize stability, reduce valve-train noise & harmonics!
• HIGH LOAD SERIES springs available for 5/16, 7mm and 6mm valves
• FEULING BEEHIVE valve springs are packaged as a matched set and must be installed at the correct OPEN HEIGHT. Matching max cam lift to the open height spec of the valve springs is essential for optimal valve-train operation and spring life. See included spring spec chart
Kits include: matched set of FEULING HIGH LOAD BEEHIVE valve springs, Ti 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.
Quicker Revving - Smoother Motion - Light Weight Ti Retainers - Bolt in up to 565 lift for M8 - Fit up to 0.600 Lift.
ONLY recommended for large lift camshafts and RACE style engines as these valvesprings if not set properly will create extreme rocker arm deflection - See Feuling 592 grind cam #1348
Fitment: Harley-Davidson Milwaukee Eight engine with factory style 6mm valve stems and triple groove locks, this kit includes Ti retainers. These springs are ONLY recommended for large lift camshafts like Feuling #1348 592 lift and RACE style engines as these valvesprings have increased load and if used on smaller cams will create extreme rocker arm deflection
SEAT Lbs. / INSTALLED HEIGHT
151 Lbs. @ 1.475 (0.485 Lift)
144 Lbs. @ 1.498 (0.508 Lift)
143 Lbs. @ 1.501 (0.511 Lift)
140 Lbs. @ 1.511 (0.521 Lift)
124 Lbs. @ 1.562 (0.578 Lift)
120 Lbs. @ 1.582 (0.592 Lift)
304 Lbs @ 0.990 OPEN HEIGHT
Coil Bind @ .945
*Cam specs measured on the lifter @ 0.050 lift with 1.61 rocker arm ratio
HIGH LOAD BEEHIVE VALVE SPRINGS FOR HARLEY DAVIDSON MILWAUKEE EIGHT ENGINES RECOMMENDED FOR 0.540 + LIFT CAMSHAFTS
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