DID 520ERV7 - X-Ring Chain Stock Item:520ERV7 x 120ZB G&G X'Ring Race chain w/ ZJ rivet link DID allowing you to talk to

allowing you to talk to your companion and still hear your music or GPS directions in the background

Increases the chain life span

the standard Out Front Mount can be reversed to go over the stem of your bike's handlebars

or used in injector systems

DID 520ERV7 - X-Ring Chain Stock Item:520ERV7 x 120ZB G&G X'Ring Race chain w/ ZJ rivet link DID allowing you to talk toMotoGP specifications: the chosen chain of MotoGP, Superbike, and road racing teams Upgraded from the 520ERV3, and boasting a 3% higher tensile strength, a 13% longer chain life, and less friction due to X Ring seals Flagship model for street bikes and enduro riding Part description explanation: eg, 520ERV7 x 120 520 = chain pitch; ERV7 = chain model; x 120 = number of chain links (bike sprocket specific please check fitment charts or contact us) We