The Moto-Master Steel Rear Sprocket is a long-lasting sprocket that lasts up to 3 times longer than an aluminium sprocket.

YAMAHA WR 250 F 2001->
YAMAHA WR 250 R 2008-and up
YAMAHA WR 250 X 2008-2014
YAMAHA WR 450 F 2003->
YAMAHA WRF 400 1999-2000
YAMAHA WRF 426 2001-2002
YAMAHA YZ 125 1999->
YAMAHA YZ 250 1999->
YAMAHA YZ 250 F 2001->
YAMAHA YZ 250 FX 2015->
YAMAHA YZ 250 X 2016->
YAMAHA YZ 450 F 2003->
YAMAHA YZ 450 FX 2016->
YAMAHA YZF 400 1998-1999
YAMAHA YZF 426 2000-2002