This 4-3/8" stroke 8-1/2" diameter flywheel assembly replaces the original flywheels 2007-'16 HD® big twin engines, when using stock pistons. Wrist pin end of connecting rods is tapered like stock rods. Sprocket shaft does not have the stock style bearing race pressed on. This flywheel assembly is for crankcases with a 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 7.659" connecting rods, with tapered 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
S&S Cycle 2007+ BT 4-3/8in Stroke Flywheel Assembly w/o Sprocket Shaft Bearing Race
Pinion and sprocket shafts are forged as part of the flywheel
Flywheel assembly is three piece design
