2003 2004 Polaris Predator 500 Yellow O-Ring Chain & Silver Sprocket 13/38 94L 13 Tooth Front Sprocket, 38 Tooth Rear Sprocket and 520-94L Yellow O-Ring Chain All Race-Driven sprockets meet or exceed OEM specifications and use hardened S45C steel. O-Ring Chain helps keep the pins lubricated which reduces friction and helps the chain last longer. Fits 2003 2004 Polaris Predator 500