Motorcycle Chain Kits At Louis you'll find chains for virtually every motorbike model. Our motorcycle chains are all supplied complete with front and rear sprockets. Everything is top brand-name quality, and you can rely on it for many thousands of kilometres. There's a simple reason why Louis only sells complete chain and sprocket kits: Your chain and sprockets both become worn with time, and should always be replaced together. Sprockets typically wear in a shark-fin pattern, which means that the teeth wear down asymmetrically. Tip: If you can move your chain more than three millimetres longitudinally on the sprocket, you should soon be installing a new chain and sprocket kit.