Parts Unlimited 520 PX Series Chain - 120 Links PU520PXX120LProvides 1 1 2 times longer wear life than an O ring chain and 12 times longer wear life than a standard chain Lower friction loss Features quad pin riveting, solid bushings and rollers Shot peened and pre stretched Quality and durability at an affordable price 520 chain includes clip connecting link Made in Japan Average tensile strength: 8,500lbs. Max engine CC: 400 750