S&S CYCLE Cylinder Heads - Twin Cam

Take your performance to the next level with S&S CYCLE Cylinder Heads - Twin Cam! These heads feature high port flow for immediate power and can handle even more upgrades down the line. Fully assembled with springs and valves, these heads have various compression ratios depending on the chosen heads, pistons, and engine displacement. For maximum performance, opt for the 89cc heads with 2.000" intake and 1.605" exhaust valves and .640" springs. Don't forget to add compression releases (sold separately) for even more control and power. Heads include four long headbolts, and reuse four long OEM headbolts, Accept OEM intake manifolds, Made in the U.S.A., Must use S&S rocker boxes (PART #90-4110) if S&S compression releases are used., Not compatible with Twin Cooled heads.

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