S&S Cycle 320-0403 S&s Cycle 3-Piece Flywheel Assembly

S&S Cycle 320-0403

• Heat-treated 4140 material is harder and 114% stronger than stock

• Harder material, no thrust washers required, where stock flywheels have thrust washers

• S&S flywheels have steel gripping the crankpin

• Larger 1.671" diameter crankpin, increased contact area and tighter press fit for a stronger joint

• No welding required

• Integral mainshaft eliminates two potential points of weakness

• Consistent balance and precision machining, truer flywheels and less vibration

• Reduced mainshaft deflection at high rpm, less vibration, reduced piston and rod side thrusting, prevents oil pump damage, fully compatible with gear drive cams

• Capable of higher rpm which allows more available power

• Equipped with sprocket bearing race installed

Note: Flywheel assemblies supplied with sprocket shaft bearing race installed are compatible with stock roller style sprocket shaft bearings. Assemblies with no race require a Timken sprocket shaft bearing.

This product was proudly made in the USA