Description

• Product

• • 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
  • Valve springs are a direct bolt-in replacement, no spring seat or rocker cover machining required up to 0.565” lift
  • 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
  • Smaller lighter weight retainers which drastically reduce 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
  • Kit includes: 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

  Notes

  • Fits factory style 6.00 mm valve stem and triple groove.

  Seat lb/Installed Height

  • 151 lb @ 1.475″ (0.485″ Lift)
  • 144 lb @ 1.498″ (0.508″ Lift)
  • 143 lb @ 1.501″ (0.511″ Lift)
  • 140 lb @ 1.511″ (0.521″ Lift)
  • 124 lb @ 1.562″ (0.578″ Lift)
  • 120 lb @ 1.582″ (0.592″ Lift)
  • 304 lb @ 0.990″ open height
  • 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 USA

  Warnings

  • Only recommended for large lift camshafts and race style engines as these valvesprings if not set properly will create extreme rocker arm deflection.

  Notes

  • Coil Bind @ 0.945″
  • Recommended for +0.540” lift camshafts.