DID timing chain - Made in Japan - Chain pins made of carburizing vanadium The chain pins of these DID control chains are by a special surface treatment hardened and allow up to three times longer service life than conventional control chains - PLEASE DO NOT USE THE BRANDS OF THE BRACKET FOR THE BRANCHES ONLY! Assembly: Simply open old timing chain and connect to the new timing chain, pull through and then rivet new timing chain. This saves you several hours of work, since the engine does not have to be disassembled completely.