S&S Cycle Heads 99-05 79CC

Must use S&S rocker boxes (PART #90-4110) if S&S compression releases are used.

High port flow gives great performance now, and more later when additional upgrades are done

Heads are fully assembled with springs and valves

Compression ratios vary depending on cylinder heads chosen, pistons used and engine displacement; see Compression Ratios chart for specifications

79cc heads work great with stock motors for 88" to 103" motors; 89cc heads work best for motors over 103" or with high-compression pop-up pistons

79cc have 1.940" intake and 1.575" exhaust valve and springs for up to .650" lift; 89cc have 2.000" intake and 1.605" exhaust and .640" springs

79cc heads accept OEM rocker boxes

79cc and 89cc heads require S&S Lower Rocker Box Gasket Kit (0934-4574)

Heads are machined for compression releases (sold separately); S&S rocker boxes required when using S&S compression releases

Do not include rocker arm components, intake manifold or gaskets

Heads include four long headbolts, and reuse four long OEM headbolts

Accept OEM intake manifolds

Made in the U.S.A.