If my Sportster is an 883 converted to a 1200cc, which chain conversion kit do I need?
The only difference between the 883 and 1200 Sportster chain conversion kits is the gearing ratio. Our kits match the stock gearing that the belt drive provides. However, if your motorcycle started out as an 883 and has an 883 to 1200cc Sportster Big Bore Kit
installed, you can opt for the 1200 chain conversion kit. The big bore kit and added displacement will give you more horsepower, allowing you to run the higher (faster) gearing, just like a stock 1200 Sportster.