Sidewinder<sup>®</sup> .650" Valve Spring Kit for 2005-'18 Big Twins and 2004-'19 HD<sup>®</sup> Sportster<sup>®</sup> Models
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Sidewinder® .650" Valve Spring Kit for 2005-'18 Big Twins and 2004-'19 HD® Sportster® Models

Sidewinder® .650" Valve Spring Kit for 2005-'18 Big Twins and 2004-'19 HD® Sportster® Models

Item #: 106-5909
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$257.95

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, and chromoly forged retainers.

Works well with cams up to .650" lift. High performance conical single wire spring. 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"