EK Chain 525MVXZ 120 Link Chain EKs MVXZ Quadra-X Ring chain is the ideal replacement chain for any 600 to 1000cc street bike. Features like lightening holes in the side plates, large-diameter pins, and friction-reducing Quadra-X Rings help ensure high-performance and from 1-1/2 to 2 times increased wear life when compared to a standard O-Ring chain. Zero stretch technology virtually eliminates initial chain stretch. Max engine CC 1000 Street, 750 Dirt Average Tensile Strength: 9,300lbs.