To further increase practical durability and allowable transmission torque in such a power transmission chain that the pairs of end parts of pins are held by a pulley.

First to third link rows 51 to 53 are formed by using links 2. Each of the first link row 51, the second link row 52, and the third link row 53 comprises the plurality of links 2 arranged in the lateral direction W of the chain. Each of the link rows 51 to 53 comprises the pair of outer area links 21 disposed on the outside of the chain in the lateral direction W and the inner area link 22 disposed between the pair of outer area links 21. In each of the first to third link rows 51 to 53, the rigidity of the links 2 of the pair of outer side area links 21 is set lower than the rigidity of the links 2 of the inner area link 22.