New D.I.D. 520 ZVMX Gold plated X'ring Super Street Series chain is the strongest 520 pitch chain on the market today. Rated up to 1200cc's and comes with a rivet style connecting link. Works great on bikes like the ZX-10R, Ducati's and Aprilia 1000's. New ZVMX has gold inner plates and gold outer plates. Very Nice!!!!