2000 Polaris 325 Trail Boss Non O-Ring Chain 520-82L Tensile Strength 7600 LBS 82L Non O Ring Chain Race-Driven Non-O-Ring Chain's tensile strength = 7600+ lbs. All chains include masterlink. Non-O-Ring chain doesn't have o-rings between the links so it is lighter, thinner and has less drag. Fits 2000 Polaris 325 Trail Boss