EK Chain 520MVXZ 130 Link Chain Ek&rsquo;s MVXZ Quadra-X Ring chain is the ideal O.E. replacement chain for any 600 to 1000cc street bike Features like lightening holes in the sideplates, large-diameter pines, and friction-reducing Quadra-X Ring help ensure high-performance and from 1-1/2 to 2 times increased wear life when compared to a standard O-Ring chain