S&S 89cc Super Stock Cylinder Heads

S&S 89cc cylinder heads are intended for stock engines and other small displacement applications. These heads are compatible with stock Harley-Davidson rocker covers. Must use S&S valve cover gasket kit part (not included) with stock rocker covers. They are a very economical performance upgrade designed for use with other performance enhancers and are machined to accept S&S compression releases.

Heads can be decked up to .060″ to increase compression

89cc heads have 2.000″ intake and 1.605″ exhaust valves

S&S .640″ lift valve springs

Stock Harley-Davidson rocker boxes can be retained if S&S manual compression release or S&S Easy Start cams are used

Must use S&S valve cover gasket kit part #90-4120 with stock rocker covers (sold separately)

Machined for 2008-’13 FL top motor mount

Includes 4 long head bolts for installation

Includes rocker base gaskets pn #90-4120

Sold in pairs

Made in the USA

Product Note: