S&S 4.625″ Stroke Flywheel Assembly (320-0475)

Description

• This 4-5/8″ stroke 8-1/2″ diameter flywheel assembly fits 1999-’06 HD big twin engines (except Dyna models) and S&S T124 engines
• May be used to replace the flywheel assembly in an S&S 124″ Hot Set Up Kit
• Sprocket shaft does not have a stock style bearing race pressed on
• This flywheel assembly is for crankcases with Timken sprocket shaft bearing
• Flywheel assembly is three piece design
• Pinion and sprocket shafts are forged as part of the flywheel
• The only joints in the assembly are where the 1.671″ diameter connecting rod crankpin is pressed into the flywheels
• Flywheels are CNC machined from heat-treated, closed die, steel forgings, which are 114% stronger than late style stock steel flywheels
• Fully assembled with premium quaility S&S heavy duty 7.667″ connecting rods, with full width wrist pin ends, and dynamically balanced
• Assembly is trued to less than .0005″ runout on pinion and sprocket shaft bearing surfaces, making them capable of higher rpm and fully compatible with gear drive cams