S&S Cycle .650″ Lift Sidewinder Valve Spring Kit

• Works well with cams up to .650″ lift

• Manufactured from ultra clean high silicon Kobe alloy wire then micro shot peened

and nitrided

• CNC machined 9° locks

• High performance conical single wire spring

• Chromoly forged retainers

• Kit contains Valve keepers, Top & Bottom collars, Springs, Shims

• Specifications: .650″ lift, installed height 1.860″, 178 lb. seat force, 376 lbs force at Max lift, up to 6500 RPM

• Does not include seals, order seal kit separately

• Designed for 5/16″ valve stems