Order Includes: 1 x Rear Sprocket. Part Numbers: 4DN-25445-30-00 4DN-25445-20-00 2UJ-25445-50-00 / Specs: Material: C49 High Carbon Steel. Dimensions: Width: 5.8 mm / 0.22" , Inner Diameter: 125 mm / 4.92" , Outer Diameter: 232.8 mm / 9.16" , Circles Diameter: 10.5 mm / 0.41" , Mounting hole Distance: 145 mm / 5.70" , Number of Teeth: 45. We strongly suggest comparing the posted picture to the unit(s) that needs to be replaced..
