520 ERVT - Drive Chain - 120 Links - 520ERVT breaks down the concept of the original motocross chain (non o-ring) and adds the benefits of an x-ring - X-Ring helps keep your chain sealed with lubrication, limits dirt and mud from getting in-between the side plates, and only has 4 contact points with the plates which means less friction than the traditional O-Ring chain - More lightweight and longer chain life - By adjusting the materials, the 520ERVT is now 2% lighter and has a 15% longer lifespan, all while maintaining the tensile strength

520 MX - High-Performance Motorcycle Chain - 120 Links - Gold/Black - MX Series chain designed for motorcross - Trusted and used by many teams and champions - Because of its incredible strength, this is the go-to chain for riders across a multitude of racing disciplines, especially among the 450 class - Non-sealed 520MX boasts D.I.D's highest rated tensile strength among non-sealed chains at 8,930 lbs. and properly handles the beating that chains take during tough, off-road races