The chain drive is only as strong as each of the connected parts within the whole system! At high mileage the timing chains and other components of the chain drive parts are wearing out. Therefore it is essential to replace all important parts at the same time. This is the economic and safe solution.
Chain wheels, slide rails, roller chains an the needed assembly accessories: All component parts are perfectly matched and subject to strict quality controls. The use of complete kits offers the perfect protection against failure, damage an warranty claims.