O-Ring 98L Chain & Silver Sprocket 13/38 for 2006-2009 Yamaha YFM700 700 Raptor 13 Tooth Front Sprocket, 38 Tooth Rear Sprocket and 520-98L 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 2006 2007 2008 2009 Yamaha YFM700 700 Raptor