Red Non O-Ring 86L Chain & Silver Sprocket 13/38 93-99 Honda Sportrax TRX 300EX 13 Tooth Front Sprocket, 38 Tooth Rear Sprocket and 520-86L Red Non-O-Ring Chain All Race-Driven sprockets meet or exceed OEM specifications and use hardened S45C steel. Non-O-Ring chain doesn't have o-rings between the links so it is lighter, thinner and has less drag. Fits 1993 1994 1995 1996 1997 1998 1999 Honda TRX300EX TRX 300EX