Surron Primary Chain Conversion Kit with DID Chain, 14T Front for On/Off Road. Perfect for very sandy or muddy conditions where standard drive belt set up can slip during extreme use. Consists of 14T front and 30T rear sprocket plus correct length upgraded 420 Pitch 42 Links DID chain. Check out our store for more Sur-Ron parts & goodies!This item is in the category "Sporting Goods\Cycling\Bike Components & Parts\Electric Bike Components". The seller is "urbanbikeshop" and is located in this country: GB. This item can be shipped worldwide.