Tdr Racing Chain 520hdx With X-ring Technology

Advantages of Racing Chain TDR With X-Ring Technology 520HDX - 106 GOLD - Using thicker plate able to handle heavier weight. - Longer durability because designed with high precision so it will reduce infliction between chain and gear. - With Special Heat Treatment, made Racing Chain TDR With X-Ring Technology 520HDX - 106 GOLD become more stronger than others. - 520HDX use X-Ring Technology maximising chain lubrication.