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YAMAHA YZ 125 250 YZF WRF 250 426 450 1999-2020 FACTORY REAR SPROCKET 52T

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YAMAHA YZ 125 250 YZF WRF 250 426 450 1999-2020 FACTORY REAR SPROCKET 52T

AS3 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.





Will Fit

1999-2020 Yamaha YZ 125

1999-2020 Yamaha YZ 250

2020 Yamaha YZ 125 X

2016-2020 Yamaha YZ 250 X

2001-2020 Yamaha YZF 250

1999-2000 Yamaha YZF 400

2001-2002 Yamaha YZF 426

2003-2020 Yamaha YZF 450

2015-2020 Yamaha YZ 250 FX

2016-2020 Yamaha YZ 450 FX

2001-2020 Yamaha WRF 250

1999-2000 Yamaha WRF 400

2001-2002 Yamaha WRF 426

2003-2020 Yamaha WRF 450



  • Hardened steel outer ring will outlast aluminium sprockets by up to 3 times
  • Aircraft grade 7075-T6 aluminium inner ring, up to 50% lighter than steel sprockets
  • Will not bend or damage as easily as aluminium sprockets, ideal for enduro 
  • Anodised finish with AS3 Performance branding
  • Manufactured by one of the world's leading sprocket manufacturers
  • Tested on some of the toughest sand tracks in the world
  • UK company with 12 month warranty
  • The sprocket in the picture is the exact style of sprocket you will receive