How to Order: Below is the breakdown of the part numbers. Order the part number that has the number of teeth and the specific bore size for your application. We also carry sprockets in 35, 50, 60, and 80 chain size.
Example: 40B9F1/2
40 = Chain Size
BF = Type/Finished Bore
9 = Number of Teeth
1/2 = Specific Finished Bore Size (Inches)