D.I.D 520 ERVT Series Racing Chain - 120 Links - Gold 520ERVT-120High performance, lightweight, low friction chain designed to meet the performance needs of Moto3 racing Breaks down the concept of the original motocross chain (non O ring) and adds the benefits of an X ring 2% lighter and 15% longer lifespan, all while maintaining the tensile strength Designed for motocross Distinctive gold plated finish