KAWASAKI KX 125 250 500 KX 250 450 F KDX KLX AS3 FACTORY REAR SPROCKET 520 51T BLACK year-2011 2008-2021 Yamaha YZ 250

2008-2021 Yamaha YZ 250

2001-2007 KTM 525 EXC (Thermostat Bypass Kit)

1993-1997 Kawasaki KLX 250 SE

2008-2019 Yamaha YZ 250

2009-2012 Kawasaki ER6 N

KAWASAKI KX 125 250 500 KX 250 450 F KDX KLX AS3 FACTORY REAR SPROCKET 520 51T BLACK year-2011 2008-2021 Yamaha YZ 250AS3 Performance Factory Series rear sprockets combine the strength of steel and the light weight of aluminium to give you the ultimate hard wearing rear sprocket. The outer ring is manufactured from hardened steel with a nickel coating and will outlast an aluminium sprocket by up to 3 times. The inner ring is constructed from aircraft grade 7075 T6 aluminium and is up to 50% lighter than a standard steel sprocket. Details Teeth: 51 Chain: 520 Will Fit