FEULING PARTS Endurance Beehive® Valve Spring Kit — Chrome-Silicon, Titanium collars – 18-26 Softail, 23-26 Touring, 17-25 Trike, 20-22, 24 CVO

The Endurance Beehive® Valve Spring Kit provides direct bolt-in replacements with no machining or rocker box clearancing required.

Machined from premium-grade high-tensile chrome silicon single-conical ovate wire, shot-preened with a specially processed thermal heat treat and NexTex® finish for the fatigue life needed to exceed the high demands of V‑Twin engines.

The kit includes 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 and engineered for demanding V‑Twin applications; cam specs measured on the lifter @ 0.050" lift with 1.61 rocker arm ratio. 🇺🇸

Performance: up to 0.565" lift; 226 lb @ 0.970" open height; coil bind @ 0.920".

Seat load / installed height examples: 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).

Fits stock 6.00 mm valve stems with triple groove.