A unique off-set 24 tooth transmission sprocket, which permits the installation of wider than stock rear tires or final drive ratio changes by converting the final drive from belt to chain on Softail or FXR models. The special sprocket and spacer moves the rear drive chain as far away from the tire as possible, and permits installation of 150 series tires. The kit fits 1986 thru 2006 Softail models when used in combination with 1973 up 4 Speed rear sprockets. Must be used in conjunction with ZPN720155 spacer and ZPN022468 main drive gear seal on 1994 thru 2006 Softails. Fits 1985 thru 1994 FXR models when used with 1982 thru 1985 FXR rear sprockets. The installation of this sprocket in combination with a 51 tooth rear sprocket will change the final drive ratio from 2.1875 to 2.125. The combination with a 48 tooth rear sprocket gives an increase to 2.000, which is ideal for stroker motors, 7/32 (5.6mm) off-set.