EK Chain 525 Mvxz2 Chain The EK Mvxz2 Quadra-X Ring chain stands out as the perfect choice for 1000cc street bikes, offering enhanced performance and durability. Its design incorporates lightening holes in the sideplates and large-diameter pins, complemented by friction-reducing Quadra-X Rings. These features collectively contribute to a high-performance experience with up to twice the wear life of traditional O-Ring chains. Features: Quadra X-ring Street use only Max engine capacity: 1000cc Tensile strength: 9300 lbs. Rivet master link