Endurance Beehive® Valve Spring Kit

Endurance Beehive® Valve Spring Kit

Direct bolt-in replacements, no machining or rocker box clearancing required

Machined from premiun-grade high tensile chrome silicon single-conical ovate wire

Shot-preened with specially processed thermal heat treat and super NexTex® finish for fatigue life needed to exceed high demands in V-Twin engines

Kit includes Endurance Beehive® valve springs, with or without titanium retainers (as noted), machined spring seats, seat shims, valve locks and Viton® valve seals

Made in the USA

Up to 0.565" lift

Seat lb / installed height:

134 lb @ 1.375" (0.405" lift)

127 lb @ 1.405" (0.435" lift)

125 lb @ 1.415" (0.445" lift)

121 lb @ 1.435" (0.465 lift)

116 lb @ 1.455" (0.485" lift)

113 lb @ 1.470" (0.500" lift)

109 lb @ 1.490" (0.520" lift)

103 lb @ 1.520" (0.550" lift)

226 lb @ 0.970" Open Height

Coil Bind @ 0.920"

Cam specs measured on the lifter @ 0.050 lift with 1.61 rocker arm ratio

Fits stock 6.00 mm valve stems with triple groove.