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الوصف
Specifications
Includes
Valve keepers, Top & Bottom collars, Springs, Shims
Features
Sidewinder® .650" Valve Spring Kits for Twin Cam 88® Big Twins with stock heads (both 7mm and 5/16" valve stems) and all S&S Super Stock® heads (5/16" valve stems)
Manufactured from ultra clean high silicon Kobe alloy wire then micro shot peened and nitrided