Twin Power 5 Speed Big Twin 24T Offset Sprocket Kit .282 Offset W/.197 Rear Sprocket SpacerConverts rear belt to chain drive and increases tire clearance. The Conversion Sprocket from Twin Power converts the front pulley to an offset sprocket and chain drive for use with wide tires. This Part Fits: Year Make Model Submodel 1986 1990 Harley Davidson FLST Heritage Softail Base 1988 1994 Harley Davidson FLSTC Heritage Softail Classic Base 1990 1994 Harley Davidson FLSTF Fat Boy Base 1994 Harley Davidson FLSTN Heritage Softail Special Base 1987