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RFX Pro HCS Rear Sprocket YZ125-250 YZF250-450 99-25

Item No. 110664
RFX Pro Series Hi-Carbon Steel (HCS) Rear Sprockets are the ideal choice for riders seeking exceptional durability, superior performance, and great value. Engineered from certified Hi-Carbon Steel, these sprockets deliver unmatched wear resistance and enhanced strength compared to mild steel
In stock

Description

RFX Pro Series Hi-Carbon Steel (HCS) Rear Sprockets are the ideal choice for riders seeking exceptional durability, superior performance, and great value. Engineered from certified Hi-Carbon Steel, these sprockets deliver unmatched wear resistance and enhanced strength compared to mild steel alternatives.

Thanks to their added strength, the sprockets feature a lighter-profile design, minimising the weight difference compared to aluminium options without compromising on durability.

Each RFX HCS sprocket is precision laser-cut to ensure tighter tolerances and a perfect fit, offering reliable performance for every ride.

Product Features:

  • Certified Hi-Carbon Steel
  • CNC Laser Cut.
  • CAD designed profile for lightness.
  • Mud clearing grooves to reduce wear.
  • Rigid design increases torsional strength.
  • Tighter tolerances improve performance.

Fitting Instructions:

  • Start with bike on a stand with the rear wheel raised from the ground.
  • Remove chain and wheel from bike.
  • While holding the Hex key loosen the nuts with a spanner.
  • Remove all nuts and old sprocket.
  • Clean around the hub making sure clean and free of debris.
  • Take the new sprocket and place on hub ensuring a nice snug fit making sure the bolt holes are in position.
  • Clean sprocket bolts & nuts.
  • Apply Blue Loctite to each bolt and insert in the holes.
  • Thread nuts on to bolts by hand ensuring locking seals are intact and in good condition.
  • Hold Hex key in place and tighten nuts even pattern.
  • Torque nuts and bolts in accordance to your owner’s manual.
  • Put wheel back in bike making sure chain is corrected aligned and tightened to manufacturer’s specification.

Specifications

Manufacturer Item No.
FXRS31-4699STFXRS31-4699STFXRS31-4799STFXRS31-4899STFXRS31-4999STFXRS31-5099STFXRS31-5299ST
RaceFX Item No.
FXRS 31-46 99STFXRS 31-47 99STFXRS 31-48 99STFXRS 31-49 99STFXRS 31-50 99STFXRS 31-51 99STFXRS 31-52 99ST

Compatibility

This item is compatible with the following vehicle(s):
MakeModelYear(s)
FANTICXE 1252021, 2022
FANTICXX 1252021, 2022
HONDAFX 650 VIGOR (RD09)2000
HONDANX 650 DOMINATOR (RD02)1988, 1989, 1990, 1991, 1992, 1993, 1994
HONDASLR 650 (RD09)1997, 1998
YAMAHATT-R 125 LW BIG WHEELS E (2021
YAMAHATT-R 2302005, 2006
YAMAHAWR 125 Z1999, 2000, 2001, 2002, 2003
YAMAHAWR 250 F2020, 2021, 2022
YAMAHAWR 250 F (CG26)2007
YAMAHAWR 250 F (CG30)2008, 2009, 2010, 2011, 2012, 2013, 2014
YAMAHAWR 250 F (CG36)2015
YAMAHAWR 250 F (RE25)2016, 2017, 2018, 2019
YAMAHAWR 250 F ENDURO GP (RE25)2018
YAMAHAWR 250 R (DG20)2016
YAMAHAWR 400 F (CH04)1999, 2000
YAMAHAWR 426 F (CJ02)2001, 2002
YAMAHAWR 450 F2016, 2017, 2021, 2022
YAMAHAWR 450 F (CJ04)2003, 2004
YAMAHAWR 450 F (CJ07)2005
YAMAHAWR 450 F (CJ09)2006
YAMAHAWR 450 F (CJ12)2007
YAMAHAWR 450 F (CJ13)2008, 2009, 2010, 2011
YAMAHAWR 450 F (DJ03)2012, 2013, 2014, 2015
YAMAHAWR 450 F (RE45)2018, 2019, 2020
YAMAHAWR 450 F ENDURO GP (RE45)2018
YAMAHAYZ 1252024
YAMAHAYZ 125 (CE03)1999
YAMAHAYZ 125 (CE05)2000
YAMAHAYZ 125 (CE08)2001
YAMAHAYZ 125 (CE09)2002
YAMAHAYZ 125 (CE10)2003
YAMAHAYZ 125 (CE13)2004
YAMAHAYZ 125 (CE15)2005
YAMAHAYZ 125 (CE16)2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023
YAMAHAYZ 2502024
YAMAHAYZ 250 (CG05)1999
YAMAHAYZ 250 (CG08)2000, 2001
YAMAHAYZ 250 (CG12)2002
YAMAHAYZ 250 (CG13)2003
YAMAHAYZ 250 (CG17)2004
YAMAHAYZ 250 (CG20)2005
YAMAHAYZ 250 (CG23)2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023
YAMAHAYZ 250 F2022, 2023, 2024
YAMAHAYZ 250 F (CG10)2001, 2002
YAMAHAYZ 250 F (CG14)2003
YAMAHAYZ 250 F (CG18)2004
YAMAHAYZ 250 F (CG21)2005
YAMAHAYZ 250 F (CG25)2006
YAMAHAYZ 250 F (CG27)2007, 2008, 2009
YAMAHAYZ 250 F (CG33)2010, 2011, 2012, 2013
YAMAHAYZ 250 F (CG34)2014, 2015, 2016
YAMAHAYZ 250 F (CG39)2017, 2018
YAMAHAYZ 250 F (CG40)2019, 2020, 2021
YAMAHAYZ 250 FX2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024
YAMAHAYZ 250 X2016, 2017, 2018, 2019, 2020
YAMAHAYZ 400 F (CH03)1999
YAMAHAYZ 426 F (CJ01)2000, 2001, 2002
YAMAHAYZ 450 F2022, 2023, 2024, 2025
YAMAHAYZ 450 F (CJ03)2003
YAMAHAYZ 450 F (CJ05)2004
YAMAHAYZ 450 F (CJ06)2005
YAMAHAYZ 450 F (CJ10)2006, 2007, 2008, 2009
YAMAHAYZ 450 F (CJ15)2010, 2011, 2012, 2013
YAMAHAYZ 450 F (CJ18)2014, 2015
YAMAHAYZ 450 F (CJ21)2016, 2017
YAMAHAYZ 450 F (CJ22)2018
YAMAHAYZ 450 F (CJ23)2019, 2020, 2021
YAMAHAYZ 450 FX2016, 2017, 2018, 2019, 2020

RFX Pro HCS Rear Sprocket YZ125-250 YZF250-450 99-25

Item No. 110664
RFX Pro Series Hi-Carbon Steel (HCS) Rear Sprockets are the ideal choice for riders seeking exceptional durability, superior performance, and great value. Engineered from certified Hi-Carbon Steel, these sprockets deliver unmatched wear resistance and enhanced strength compared to mild steel
In stock

Description

RFX Pro Series Hi-Carbon Steel (HCS) Rear Sprockets are the ideal choice for riders seeking exceptional durability, superior performance, and great value. Engineered from certified Hi-Carbon Steel, these sprockets deliver unmatched wear resistance and enhanced strength compared to mild steel alternatives.

Thanks to their added strength, the sprockets feature a lighter-profile design, minimising the weight difference compared to aluminium options without compromising on durability.

Each RFX HCS sprocket is precision laser-cut to ensure tighter tolerances and a perfect fit, offering reliable performance for every ride.

Product Features:

  • Certified Hi-Carbon Steel
  • CNC Laser Cut.
  • CAD designed profile for lightness.
  • Mud clearing grooves to reduce wear.
  • Rigid design increases torsional strength.
  • Tighter tolerances improve performance.

Fitting Instructions:

  • Start with bike on a stand with the rear wheel raised from the ground.
  • Remove chain and wheel from bike.
  • While holding the Hex key loosen the nuts with a spanner.
  • Remove all nuts and old sprocket.
  • Clean around the hub making sure clean and free of debris.
  • Take the new sprocket and place on hub ensuring a nice snug fit making sure the bolt holes are in position.
  • Clean sprocket bolts & nuts.
  • Apply Blue Loctite to each bolt and insert in the holes.
  • Thread nuts on to bolts by hand ensuring locking seals are intact and in good condition.
  • Hold Hex key in place and tighten nuts even pattern.
  • Torque nuts and bolts in accordance to your owner’s manual.
  • Put wheel back in bike making sure chain is corrected aligned and tightened to manufacturer’s specification.

Specifications

Manufacturer Item No.
FXRS31-4699STFXRS31-4699STFXRS31-4799STFXRS31-4899STFXRS31-4999STFXRS31-5099STFXRS31-5299ST
RaceFX Item No.
FXRS 31-46 99STFXRS 31-47 99STFXRS 31-48 99STFXRS 31-49 99STFXRS 31-50 99STFXRS 31-51 99STFXRS 31-52 99ST

Compatibility

This item is compatible with the following vehicle(s):
MakeModelYear(s)
FANTICXE 1252021, 2022
FANTICXX 1252021, 2022
HONDAFX 650 VIGOR (RD09)2000
HONDANX 650 DOMINATOR (RD02)1988, 1989, 1990, 1991, 1992, 1993, 1994
HONDASLR 650 (RD09)1997, 1998
YAMAHATT-R 125 LW BIG WHEELS E (2021
YAMAHATT-R 2302005, 2006
YAMAHAWR 125 Z1999, 2000, 2001, 2002, 2003
YAMAHAWR 250 F2020, 2021, 2022
YAMAHAWR 250 F (CG26)2007
YAMAHAWR 250 F (CG30)2008, 2009, 2010, 2011, 2012, 2013, 2014
YAMAHAWR 250 F (CG36)2015
YAMAHAWR 250 F (RE25)2016, 2017, 2018, 2019
YAMAHAWR 250 F ENDURO GP (RE25)2018
YAMAHAWR 250 R (DG20)2016
YAMAHAWR 400 F (CH04)1999, 2000
YAMAHAWR 426 F (CJ02)2001, 2002
YAMAHAWR 450 F2016, 2017, 2021, 2022
YAMAHAWR 450 F (CJ04)2003, 2004
YAMAHAWR 450 F (CJ07)2005
YAMAHAWR 450 F (CJ09)2006
YAMAHAWR 450 F (CJ12)2007
YAMAHAWR 450 F (CJ13)2008, 2009, 2010, 2011
YAMAHAWR 450 F (DJ03)2012, 2013, 2014, 2015
YAMAHAWR 450 F (RE45)2018, 2019, 2020
YAMAHAWR 450 F ENDURO GP (RE45)2018
YAMAHAYZ 1252024
YAMAHAYZ 125 (CE03)1999
YAMAHAYZ 125 (CE05)2000
YAMAHAYZ 125 (CE08)2001
YAMAHAYZ 125 (CE09)2002
YAMAHAYZ 125 (CE10)2003
YAMAHAYZ 125 (CE13)2004
YAMAHAYZ 125 (CE15)2005
YAMAHAYZ 125 (CE16)2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023
YAMAHAYZ 2502024
YAMAHAYZ 250 (CG05)1999
YAMAHAYZ 250 (CG08)2000, 2001
YAMAHAYZ 250 (CG12)2002
YAMAHAYZ 250 (CG13)2003
YAMAHAYZ 250 (CG17)2004
YAMAHAYZ 250 (CG20)2005
YAMAHAYZ 250 (CG23)2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023
YAMAHAYZ 250 F2022, 2023, 2024
YAMAHAYZ 250 F (CG10)2001, 2002
YAMAHAYZ 250 F (CG14)2003
YAMAHAYZ 250 F (CG18)2004
YAMAHAYZ 250 F (CG21)2005
YAMAHAYZ 250 F (CG25)2006
YAMAHAYZ 250 F (CG27)2007, 2008, 2009
YAMAHAYZ 250 F (CG33)2010, 2011, 2012, 2013
YAMAHAYZ 250 F (CG34)2014, 2015, 2016
YAMAHAYZ 250 F (CG39)2017, 2018
YAMAHAYZ 250 F (CG40)2019, 2020, 2021
YAMAHAYZ 250 FX2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024
YAMAHAYZ 250 X2016, 2017, 2018, 2019, 2020
YAMAHAYZ 400 F (CH03)1999
YAMAHAYZ 426 F (CJ01)2000, 2001, 2002
YAMAHAYZ 450 F2022, 2023, 2024, 2025
YAMAHAYZ 450 F (CJ03)2003
YAMAHAYZ 450 F (CJ05)2004
YAMAHAYZ 450 F (CJ06)2005
YAMAHAYZ 450 F (CJ10)2006, 2007, 2008, 2009
YAMAHAYZ 450 F (CJ15)2010, 2011, 2012, 2013
YAMAHAYZ 450 F (CJ18)2014, 2015
YAMAHAYZ 450 F (CJ21)2016, 2017
YAMAHAYZ 450 F (CJ22)2018
YAMAHAYZ 450 F (CJ23)2019, 2020, 2021
YAMAHAYZ 450 FX2016, 2017, 2018, 2019, 2020