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 three piece design flywheel assembly is for crankcases with Timken® sprocket shaft bearing. 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.
Key Features
Brand Manufactured by S&S Cycle
Category Drivetrain
Type Flywheels
Specifications
Length 15 in
Width 12.25 in
Height 11 in
Weight 39.5 lbs
Rider Benefits
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 three piece design flywheel assembly is for crankcases with Timken® sprocket shaft bearing. 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.
Flywheels are CNC machined from heat-treated, closed die, steel forgings, which are 114 percent 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
The only joints in the assembly are where the 1.671" diameter connecting rod crankpin is pressed into the flywheels
Please review manufacturer details to ensure proper fitment before ordering.