Converting from belt to chain drive has a number of advantages. It can hold more horsepower, it makes it easier to change your final drive ratio, and it provides more space to install wider rear tires. These rear sprockets for 530 series chain have 2.22" (56.4mm) inner diameter as for 2000 to present rear hubs and 7/16" bolt holes. Can also be used on 1984 thru 1999 style hubs with 2" register when installed with the ZPN760514 sprocket adapter spacer. Note that this spacer will give an extra 6mm offset.