Bottom End

Feature three-piece assembled flywheels with shaftsDo not require any motor case modification4-1/2" stroke103" stock motors or motors with factory 95" kits require piston kit only; stock or S&S cylinder heads can be usedStock cylinders will require...

S&S 3-piece flywheels with integral main shafts are the strongest yet, made from 4140 steel and feature a larger 1.671" crankpinFlywheel assemblies are designed for use with Timken bearing conversionFit directly in stock crankcases with no...

S&S 3-piece flywheels with integral main shafts are the strongest yet, made from 4140 steel and feature a larger 1.671" crankpinFlywheel assemblies are designed for use with Timken bearing conversionFit directly in stock crankcases with no...

Feature three-piece assembled flywheels with shaftsDo not require any motor case modification4-1/2" stroke103" stock motors or motors with factory 95" kits require piston kit only; stock or S&S cylinder heads can be usedStock cylinders will require...

Cam Chest Kit Without Cams - Gear Drive - Oil Cooled - Black Pushrods - M8 310-1258

Cam Chest Kit Without Cams - Gear Drive - Water Cooled - Black Pushrods - M8 310-1260

Cam Chest Kit Without Cams - Gear Drive - Water Cooled - Chrome Pushrods - M8 310-1261

Made of high-strength forged steel and designed for stock and high-performance custom applicationsSpecial keyed 6° large diameter tapered sprocket shaft that provides more contact area for increased strengthStandard S&S tapered crankpin and pinion shaft...

Replacement Flywheel Assemblies for Twin Cam MotorsS&S 3-piece flywheels with integral main shafts are the strongest yet, made from 4140 steel and feature a larger 1.671" crankpinFlywheel assemblies are designed for use with Timken bearing conversionFit...

Made of high-strength forged steel and designed for stock and high-performance custom applicationsSpecial keyed 6° large diameter tapered sprocket shaft that provides more contact area for increased strengthStandard S&S tapered crankpin and pinion shaft...

Made of high-strength forged steel and designed for stock and high-performance custom applicationsSpecial keyed 6?? large diameter tapered sprocket shaft that provides more contact area for increased strengthStandard S&S tapered crankpin and pinion shaft...

The exact same assembly used in S&S SH80 Alternator enginesCan be used to overhaul an S&S engine or to build a custom engine using similar crankcases and pistonsFeatures 4-1/4" stroke, 8-1/2" diameter flywheels, and 7.440" connecting rodsMade in the U.S...