.650" Lift Sidewinder<sup>®</sup> Valve Spring Kit for 1984-2004 Big Twins and 1986-2003 HD<sup>®</sup> Sportster<sup>®</sup> Models

.650" Lift Sidewinder® Valve Spring Kit for 1984-2004 Big Twins and 1986-2003 HD® Sportster® Models

Item #: 900-0050
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$169.95
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Sidewinder® .650" Valve Spring Kits for Twin Cam 88® big twins w/ stock heads (both 7mm and 5/16” valve stems) and all S&S Super Stock® heads (5/16” valve stems). 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.

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S&S recommends roller rocker arms be used with lifts over .585"