These stroker cranks in combination with the required stroker and/or stroker Big Bore pistion kits turn your Twin Cam into a Mean Machine. Flywheels and connecting rods are made from high strength forgings, than fully machined and than balanced. Cranks feature a straight press crank pin and bearings as used in OEM crankshafts. Cranks are available for 1999 thru 2006 Twin Cam "A" models, as well as for the Twin Cam B, balanced, engines as used in 2000 thru 2006 Softail models. Installation in 2003 and later models requires the use of the optional bearing assembly ZPN231697.