S&S, Sidewinder valve spring kit. .650" lift - 84-99 Evo B.T.; 99-04 Twin Cam; 86-03 XL (NU) 901368 Oil return o-ring

Oil return o-ring

Removable baffles give a great deep sound

they will fit stock 99-02 model year and all S&S cases without modifications

Measures approximately 21/8" W x 7/8" H x 1" D

Fits: > Traditional H-D male mount

S&S, Sidewinder valve spring kit. .650" lift - 84-99 Evo B.T.; 99-04 Twin Cam; 86-03 XL (NU) 901368 Oil return o-ringKit includes beehive springs, chromoly forged top collars, steel bottom collars, valve keepers and shims. Works with both 7mm and 5 16 valve stems and all S&S SuperStock heads (5 16) valve stems. Springs are single wire conical (beehive) style springs, manufactured from clean high silicon Kobe alloy wire then micro shot peened and nitrided. 650" valve lift. 1. 860" installed height, 178lbs valve seat spring pressure and 376lbs@. 650" lift. Maximum