S&S CYCLE Super Stock* Cylinder Heads - Twin Cam - Black

Experience the ultimate in performance with S&S CYCLE Super Stock* Cylinder Heads for Twin Cam engines. These black heads provide high port flow for immediate power and even more potential with future upgrades. Fully assembled with top-quality springs and valves, these heads are designed to handle up to .650" lift with 79cc heads and .640" lift with 89cc heads. Their superior design allows for maximum compression ratios, which can be customized based on your chosen cylinder heads, pistons, and engine displacement. Want to take your ride to the next level? Opt for the 89cc heads, ideal for motors over 103" or those with high-compression pop-up pistons. With 79cc heads, you'll enjoy 1.940" intake and 1.575" exhaust valves, while 89cc heads boast 2.000" intake and 1.605" exhaust valves. Does not include rocker arm components, intake manifold or gaskets, Heads include four long headbolts, and reuse four long OEM headbolts, Accept OEM intake manifolds, Rest assured, these heads meet the highest standards and are made in the U.S.A.., Must use S&S rocker boxes (PART #90-4110) if S&S compression releases are used.

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