S&S CYCLE

Huge Power increase over stock engine124 cubic inch displacement4 1/8" Bore4 5/8" Stroke640 Cam1.671" diameter Crankpin927" WristpinPiston Cooling JetsS&S Forged Pistons10.8:1 CompressionS&S 3 Piece...

Large displacement, high flowing S&S heads, and gear driven 640 cam result in large horsepower increase over stock engine124 cubic inch displacement at 10.8:1 compression4-1/8" bore X 4-5/8" stroke1...

Stock-height basic engine is direct bolt in replacement for aging 80" H-D Evolution enginesDoes not include carb or ignition; use stock or aftermarket carburetor and air cleaner508 camForged rocker...

Stock-height basic engine is direct bolt in replacement for aging 80" H-D Evolution enginesDoes not include carb or ignition; use stock or aftermarket carburetor and air cleaner508 camForged rocker...

For those who don’t want to go “big inch”, the S&S V80 engine provides a performance solutionWith the same displacement and physical dimensions as a stock Harley-Davidson® Evolution® engine, the V80...

80" Displacement3 1/2" Bore4 1/4" StrokeS&S 520 CamshaftS&S Forged PistonsCompression Ratio 10:1S&S Super E carburetorSuper Stock® IgnitionBlack FinishClassic Teardrop Air CleanerS&S Forged Roller...