Our jack shaft sprockets are designed to be used on 300, 330, 360 twin drive swing arm kit. These big tire twin sprockets need to be specified on what wheel application you are using. You also will run two 530 chains in use of our double drive sprocket. Our sprocket are used on all sport bikes, but will also you will need to run a front sprocket that also uses a 530 chain. This jack shaft sprocket system uses high end bearing in order to keep over-heating which will lock up bearing, causing hub to wear out.