Product details:

D.I.D 520 Pro-Street VX2 Series X-Ring Chain - 92 Links - Natural Steel - Greater rigidity (7% higher than previous VM). Higher rigidity creates smoother handling, reduced power loss and quicker response. Highest value in all D.I.D series. D.I.D X-Ring has half the friction compared to O-Ring chain. Superior longer life than previous VM series. Replaces the Professional O-Ring V Series and the Premium X-Ring VM Series. Connecting links are not interchangeable between the new VX and the former V and VM. Average Tensile Strength: 8,210lbs.