The Polisport Chain Guide For Yamaha YZ 125/250 2008-18, YZF 250/450 & WRF250/ 450 2007-18 - Black is part of the latest performance motocross and enduro drive chain range from Polisport.To Fit Yamaha YZ125/ 250 2008-18, YZF250/ 450 & WRF250/ 450 2007-18....