Complete Engines & Rebuild Kits

S&S Cycle 129" Power Package Engine Performance Kit - Gear Drive - Oil Cooled - Highlighted Fins - M8 310-1224

S&S Cycle 129" Power Package Engine Performance Kit - Chain Drive - Oil Cooled - Highlighted Fins - M8 310-1223

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 fits in a stock frame just like a stock engine, but...

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 arms585 valve springsFlat top cast pistonsS&S standard...

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 arms585 valve springsFlat top cast pistonsS&S standard...

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 1970-up primary and transmissionIncludes oil filter mount...

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 cylinders and forged pistons with wrist pin and rings,...

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 cylinders and forged pistons with wrist pin and rings,...

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 cylinders and forged pistons with wrist pin and rings,...

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 the crankpin nut must be performed.77-89 style pinion...

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 the crankpin nut must be performed.77-89 style pinion...

Prox Gasket Kit - Complete - Ktm 34.6520 KTM -- 520 EXC -- (2000, 2001, 2002); KTM -- 525 EXC Racing 4-Stroke -- (2006, 2007, 2003, 2005, 2004); KTM -- 450 SX -- (2006, 2004, 2005, 2003); KTM -- 450 SMR -- (2005, 2006, 2004, 2007); KTM -- 525 SMR --...