Heavy-duty chain lasts much longer than standard chain, DR drag racing chain is among the strongest and lightest in this class, For use on motorcycles that did not come stock with an O-ring chain, Chains include clip connecting link, 530 DR – The ultimate lightweight 530 drag racing chain, At just 4.92 lb. per 100 links, 530 DR weighs less than most 530 O-ring chains and still provides an average tensile strength of 10,400 lb., For bikes up to 1500cc, Pre-stretched and pre-stressed to ensure equal load distribution