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Race Spec (RS) Aluminum Rear Sprocket - Blue

Race Spec (RS) Rear Sprockets are CNC machined to precise tolerances from high quality, heat treated 7075-T6 aluminum alloy. Painstakingly engineered, they achieve optimum load distribution, unsprung weight savings, and tooth endurance. The result is a durable, featherweight and feature-packed sprocket unequaled in the market.


Part Number Price Add
033197 $69.99 Add Item
033199 $69.99 Add Item
033217 $69.99 Add Item
033201 $69.99 Add Item
033219 $69.99 Add Item
033203 $69.99 Add Item
033221 $69.99 Add Item
033223 $69.99 Add Item
033225 $69.99 Add Item
033227 $69.99 Add Item
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  • Heat treated, precision CNC machined 7075-T6 billet aluminum construction for the ultimate in lightweight strength
  • Exclusive Angled Mud Groove design allows sprocket to self-clean during operation, preventing dirt buildup that leads to horsepower loss and sprocket wear
  • Deep penetrating anodized finish (hard anodizing on black sprockets) protects against corrosion, improves wear resistance
  • Carefully engineered window pattern reduces unsprung rotating mass without compromising strength
  • Machined edge chamfers eliminate sharp edges, reduce weight, and make for a cleaner appearance
  • Countersinks automatically center sprocket to hub during installation—no hub center guide needed
  • Machined inlay for subsurface sticker location
  • Made in USA
The items on this page fit:

Part Number Model Year(s)
033197 Yamaha YZ80 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001
033197 Yamaha YZ85 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019
033199 Yamaha YZ80 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001
033199 Yamaha YZ85 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019
033201 Yamaha YZ80 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001
033201 Yamaha YZ85 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019
033203 Yamaha YZ80 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001
033203 Yamaha YZ85 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019
033217 Yamaha WR250F 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019
033217 Yamaha WR400F 1999, 2000
033217 Yamaha WR426F 2001, 2002
033217 Yamaha WR450F 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019
033217 Yamaha YZ125 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019
033217 Yamaha YZ250 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019
033217 Yamaha YZ250F 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019
033217 Yamaha YZ250FX 2015, 2016, 2017, 2018, 2019
033217 Yamaha YZ250X 2016, 2017, 2018, 2019
033217 Yamaha YZ400F 1999
033217 Yamaha YZ426F 2000, 2001, 2002
033217 Yamaha YZ450F 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019
033217 Yamaha YZ450FX 2016, 2017, 2018, 2019
033219 Yamaha WR250F 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019
033219 Yamaha WR400F 1999, 2000
033219 Yamaha WR426F 2001, 2002
033219 Yamaha WR450F 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019
033219 Yamaha YZ125 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019
033219 Yamaha YZ250 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019
033219 Yamaha YZ250F 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019
033219 Yamaha YZ250FX 2015, 2016, 2017, 2018, 2019
033219 Yamaha YZ250X 2016, 2017, 2018, 2019
033219 Yamaha YZ400F 1999
033219 Yamaha YZ426F 2000, 2001, 2002
033219 Yamaha YZ450F 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019
033219 Yamaha YZ450FX 2016, 2017, 2018, 2019
033221 Yamaha WR250F 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019
033221 Yamaha WR400F 1999, 2000
033221 Yamaha WR426F 2001, 2002
033221 Yamaha WR450F 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019
033221 Yamaha YZ125 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019
033221 Yamaha YZ250 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019
033221 Yamaha YZ250F 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019
033221 Yamaha YZ250FX 2015, 2016, 2017, 2018, 2019
033221 Yamaha YZ250X 2016, 2017, 2018, 2019
033221 Yamaha YZ400F 1999
033221 Yamaha YZ426F 2000, 2001, 2002
033221 Yamaha YZ450F 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019
033221 Yamaha YZ450FX 2016, 2017, 2018, 2019
033223 Yamaha WR250F 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019
033223 Yamaha WR400F 1999, 2000
033223 Yamaha WR426F 2001, 2002
033223 Yamaha WR450F 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019
033223 Yamaha YZ125 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019
033223 Yamaha YZ250 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019
033223 Yamaha YZ250F 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019
033223 Yamaha YZ250FX 2015, 2016, 2017, 2018, 2019
033223 Yamaha YZ250X 2016, 2017, 2018, 2019
033223 Yamaha YZ400F 1999
033223 Yamaha YZ426F 2000, 2001, 2002
033223 Yamaha YZ450F 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019
033223 Yamaha YZ450FX 2016, 2017, 2018, 2019
033225 Yamaha WR250F 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019
033225 Yamaha WR400F 1999, 2000
033225 Yamaha WR426F 2001, 2002
033225 Yamaha WR450F 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019
033225 Yamaha YZ125 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019
033225 Yamaha YZ250 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019
033225 Yamaha YZ250F 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019
033225 Yamaha YZ250FX 2015, 2016, 2017, 2018, 2019
033225 Yamaha YZ250X 2016, 2017, 2018, 2019
033225 Yamaha YZ400F 1999
033225 Yamaha YZ426F 2000, 2001, 2002
033225 Yamaha YZ450F 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019
033225 Yamaha YZ450FX 2016, 2017, 2018, 2019
033227 Yamaha WR250F 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019
033227 Yamaha WR400F 1999, 2000
033227 Yamaha WR426F 2001, 2002
033227 Yamaha WR450F 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019
033227 Yamaha YZ125 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019
033227 Yamaha YZ250 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019
033227 Yamaha YZ250F 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019
033227 Yamaha YZ250FX 2015, 2016, 2017, 2018, 2019
033227 Yamaha YZ250X 2016, 2017, 2018, 2019
033227 Yamaha YZ400F 1999
033227 Yamaha YZ426F 2000, 2001, 2002
033227 Yamaha YZ450F 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019
033227 Yamaha YZ450FX 2016, 2017, 2018, 2019