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S&S Stroker Flywheel Kits

The legendary S&S stroker flywheel kits - still unsurpassed in quality and versatility. Stroker means flywheels with increased stroke for more cubic inches in high performance engines. The following rule of thumb applies: more stroke - more sports. 4-1/2” stroke assemblies make for excellent long haulers while 4-5/8” strokers should be considerd by the sporting rider only. Each set is completely assembled, trued and balanced, with connecting rods, pinion and sprocket shaft. Matching stroker pistons for the respective flywheel assemblies are also available and must be ordered separately. Please note that the installation of stroker kits into OEM engine cases requires the oil drain passage to be relocated and the cases to be machined for the longer strokes. Detailed instructions are included.

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Installation in 1990-up engines requires the use of 1977-1989 pinion gears.
S&S Power Kits

S&S Power Kits

Since the first V-twin rolled out of Milwaukee there were people who thought about increasing the displacement in their search for more horsepower and since 1958 there´s none who does this better than S&S. Stroker flywheel assemblies and big bore cylinders, installed as separate components or in combinations allow to achieve various displacement increases. Depending on your personal needs and preferences choose from different kits for increases up to 116 cubic inches. The performance of S&S components has been proven in thousands of engines on the open highways as well as on the race tracks of the world and the brand name is synonymous for highest quality in material and guaranteed positive horsepower results.
Stroker Flywheels by S&S; fits Evolution Big Twin; stroke: 4-5/8 ”; 89 in³; compression: 10:1
W&W# Picture net price* Available from warehouse Germany?
63-717 S&S Stroker Flywheel Kits $1,390.20 kit
in stock
* United States of America: Tax free shipping. Please check your local import fees.

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