Race Driven Honda Red O-Ring Chain & Silver Sprocket 13/38 94L 520 Pitch 13 Tooth Front Sprocket, 38 Tooth Rear Sprocket and 520-94L Red 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. Check Fitment Chart for the year, make and model of your machine