S&S® 4-3/8" Stroke Flywheel Assembly W/O Sprocket Shaft Bearing Race For 2003-'06 Internally Balanced HD® Big TwinsThis 4 3 8" stroke 8 1 2" diameter flywheel assembly replaces the original flywheels in 2003 '06 HD internally balanced big twin engines, increasing the stroke from 4" to 4 3 8". Sprocket shaft does not have a stock style bearing race pressed on. This flywheel assembly is for crankcases with Timken sprocket shaft bearing. Pinion shaft has sprocket to drive balancer chain. Flywheel assembly is three piece design. Pinion and sprocket shafts are forged
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S&S® 4-3/8" Stroke Flywheel Assembly W/O Sprocket Shaft Bearing Race For 2003-'06 Internally Balanced HD® Big Twins