D.I.D Track Chain:
High quality reliable chains made in Japan. Currently offering only the black chain and the rare copper colour finish.
D.I.D Racing PRO Track Chain (NJS):
Higher quality chain, as compared to the normal track chain. NJS Stamped. 1/8 size chain, standard track bike type. Made in Japan.
DAIDO is a company based in Japan and has been producing quality track chains for the Keirin racers in Japan.