Our 520 150 Link SDZ gold chain is made of the finest quality! New X-Ring technology is the only chain for your street or race bike! Strength tested to be as good, if not better than the rest of the competition. Our quality of our product is what sets us aside from the rest. This chain is long enough to fit even our +9 inch extensions. We had to have them specially made to get this length just for you to make it fit to your application from stock to our +9 extension application.Tensil Strength: 7643 lbs.