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These S&S® Super Stock® cylinder heads for 1991-'03 HD® Sportster models feature a specially shaped combustion chamber and require special pistons that must be purchased separately
Designed to flow with the lines of the motorcycle but large enough for great rear vision
but supply enough air for slightly larger engines to perform to their full potential
are available
Fits only raked bikes
S&S 89" Stock Bore Stroker Kit For 1984-'99 Carbureted Big Twins Regulators and Solid State Parts These S&S® Super Stock® cylinderStock bore stroker kits have always been an economical way to increase the displacement of your engine. This S&S 89" stock bore stroker kit upgrades carbureted 80" HD 80 Evolution big twin engines to 89" displacement at approximately 9. 25: 1 compression. Includes a dynamically balanced 4 5 8" stroke flywheel assembly complete with S&S heavy duty connecting rods and mainshafts. Stock bore stroker kits reuse the stock cylinders, saving cost and
