Red Non O-Ring Chain 520-86NZ 1993-2008 Honda Sportrax 300 TRX300EX TRX 300EX 86L Red 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 1993-2008 Honda TRX300EX TRX 300EX