D.I.D is a Japanese manufacturer of high-performance transmission parts that is renowned worldwide for the quality of its chains and chain kits. Closely involved in competitive racing, the brand also supplies OEM parts for numerous machines. The DID 520 VX3 X-Ring chain is an upgrade from the previous VX2 model, suitable for a wide range of street, ATV, or off-road applications up to 800cc. It features new "Direct Energy Transfer" for improved throttle response, state-of-the-art technology to increase chain rigidity, and greatly improved seal performance due to increased X-ring retention and durability. It has an average tensile strength of 8,210 pounds and weighs 1.52 kgs/100 links. This model is a clip-style master link.