S&S CYCLE

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...

+30% increase in HP and torque over stockShort stroke for less vibration and longer engine lifeShorter than stock engine height for easy installationDoes not include carb or ignition; use stock or...

+30% increase in HP and torque over stockShort stroke for less vibration and longer engine lifeShorter than stock engine height for easy installationDoes not include carb or ignition; use stock or...

+30% increase in HP and torque over stockShort stroke for less vibration and longer engine lifeShorter than stock engine height for easy installationDoes not include carb or ignition; use stock or...

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...

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...

Natural crankcases and stock-looking silver powder-coated cylindersS&S hydraulic valve train with roller rocker armsS&S Super Stock ignition and billet timerHas correct length sprocket shaft for...

Sidewinder Big Bore Stroker KitContains nearly everything needed to take a stock 74" or 80" H-D? Shovelhead engine up to 93" or 96" displacementIncludes 3.625" bore high tensile, cast iron sidewinder...

Sidewinder Big Bore Stroker KitContains nearly everything needed to take a stock 74" or 80" H-D? Shovelhead engine up to 93" or 96" displacementIncludes 3.625" bore high tensile, cast iron sidewinder...

Sidewinder Big Bore Stroker KitContains nearly everything needed to take a stock 74" or 80" H-D? Shovelhead engine up to 93" or 96" displacementIncludes 3.625" bore high tensile, cast iron sidewinder...

Kits include standard flywheel assembly, 3-5/8" bore cylinders, 9.75:1 pistons, rings and gasketsCases must be bored to accept 3-5/8" bore cylinders, and a minor crankcase clearancing operation for...