Sporting the same quality as all DID chains, the 520 ATV2 is a robust design with thicker plates for increased strength and heat dissipation. Perfect for hard-on-the-throttle quads. Don't worry about increased friction. With the "X" type sealing ring, friction is kept at bay with sealing surfaces that hold more lubrication in against the rollers and pins. With design like this, DID has made an ATV chain you'll adjust once and then keep on your bike for seasons to come. Available for non-ATV applications. Designed for ATV use. Thicker plates than standard increase strength. Low-friction X-ring sealing rings. Better sealing surfaces and lubricant retention. Average tensile strength of 8,430 pounds. Wear life index: 3250. Rated up to a maximum displacement of 750cc. Weight (per 100 links): 3.42 pounds. Includes a clip-style master link.