JT Steel Sprockets are the OEM quality choice, manufactured using only the finest grade of C49 high carbon steel for the rear sprockets, and SCM420 chromoly steel alloy for the front sprockets.
Fits:

Yamaha YFM350X Warrior (2WD) 1989, Yamaha YFM350X Warrior (2WD) 1990, Yamaha YFM350X Warrior (2WD) 1991, Yamaha YFM350X Warrior (2WD) 1992, Yamaha YFM350X Warrior (2WD) 1994, Yamaha YFM350X Warrior (2WD) 1998, Yamaha YFM350X Warrior (2WD) 2000, Yamaha YFM350X Warrior (2WD) 2002, Yamaha YFM350X Warrior (2WD) 2004, Yamaha YFM660 RLE Raptor 2004, Yamaha YFM660R Raptor 2004, Yamaha YFM660R Raptor 2005, Yamaha YFS200 Blaster 2WD 2002, Yamaha YFS200 Blaster 2WD 2003, Yamaha YFS200 Blaster 2WD 2005