S&S Sidewinder valve spring kit. .650″ lift 84-99 Evo B.T.; 99-04 Twin Cam; 86-03 XL

S&S, Sidewinder valve spring kit. .650″ lift

Details

Kit 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 Super Stock® 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 [email protected]″ lift. Maximum 6500 RPM.

Fitment

84-99 Evo Big Twin; 99-04 Twin Cam; 86-03 Sportster Code: Specifications

Part Numbers