RFX Pro Series Armalite Double Compound Rear Sprocket - 520 BETA RR / XTRAINER 125-480cc 2013-2023

RFX Pro Series Armalite sprockets are designed and tested at the highest level by top World and British championship race teams.

The dual ring design gives the ultimate sprocket performance, reduced weight thanks to a 7075-T6 aluminium centre and long lasting teeth life thanks to the high carbon steel outer.

Armalite sprockets also feature a hexagon drive interface between the inner and outer ring, this is revolutionary technology for sprockets and maximises drive between the two parts and reduces the force on the rivets to zero unlike the competition.

Pro Series Armalite Sprocket Features:

• CNC 7075 Aerospace aluminium Inner ring
• HCS Outer Ring
• Hex-Drive location between inner & outer ring
• CAD designed profile for lightness.
• New style mud clearing grooves to reduce wear.
• Rigid design increases torsional strength.
• Colour anodised for that factory bike look.

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.

Fits for models:
BETA RR 125 2T ENDURO RACING 125 2019 
BETA RR 125 2T ENDURO [125]
BETA RR 125 2T ENDURO 125 2019 
BETA RR 125 2T ENDURO 125 2018 
BETA RR 125 2T RACING [125]
BETA RR 125 2T RACING 125 2021 
BETA RR 125 2T RACING 125 2020 
BETA RR 125 2T [125]
BETA RR 125 2T 125 2022 
BETA RR 125 2T 125 2021 
BETA RR 125 2T 125 2020 
BETA RR 125 4T ENDURO LC [125]
BETA RR 125 4T ENDURO LC 125 2021 
BETA RR 125 4T ENDURO LC 125 2020 
BETA RR 125 4T ENDURO LC 125 2019 
BETA RR 125 4T ENDURO LC 125 2018 
BETA RR 200 2T ENDURO [200]
BETA RR 200 2T ENDURO 200 2019 
BETA RR 200 2T [200]
BETA RR 200 2T 200 2022 
BETA RR 200 2T 200 2021 
BETA RR 200 2T 200 2020 
BETA RR 250 2T ENDURO RACING [250]
BETA RR 250 2T ENDURO RACING 250 2019 
BETA RR 250 2T ENDURO RACING 250 2018 
BETA RR 250 2T ENDURO RACING 250 2017 
BETA RR 250 2T ENDURO RACING 250 2016 
BETA RR 250 2T ENDURO RACING 250 2015 
BETA RR 250 2T ENDURO RACING 250 2014 
BETA RR 250 2T ENDURO [250]
BETA RR 250 2T ENDURO 250 2019 
BETA RR 250 2T ENDURO 250 2018 
BETA RR 250 2T ENDURO 250 2017 
BETA RR 250 2T ENDURO 250 2016 
BETA RR 250 2T ENDURO 250 2015 
BETA RR 250 2T ENDURO 250 2014 
BETA RR 250 2T ENDURO 250 2013 
BETA RR 250 2T RACING [250]
BETA RR 250 2T RACING 250 2021 
BETA RR 250 2T RACING 250 2020 
BETA RR 250 2T [250]
BETA RR 250 2T 250 2022 
BETA RR 250 2T 250 2021 
BETA RR 250 2T 250 2020 
BETA RR 250 2T 250 2019 
BETA RR 300 2T ENDURO RACING [300]
BETA RR 300 2T ENDURO RACING 300 2019 
BETA RR 300 2T ENDURO RACING 300 2018 
BETA RR 300 2T ENDURO RACING 300 2017 
BETA RR 300 2T ENDURO RACING 300 2016 
BETA RR 300 2T ENDURO RACING 300 2015 
BETA RR 300 2T ENDURO RACING 300 2014 
BETA RR 300 2T ENDURO RACING 300 2013 
BETA RR 300 2T ENDURO [300]
BETA RR 300 2T ENDURO 300 2019 
BETA RR 300 2T ENDURO 300 2018 
BETA RR 300 2T ENDURO 300 2017 
BETA RR 300 2T ENDURO 300 2016 
BETA RR 300 2T ENDURO 300 2015 
BETA RR 300 2T ENDURO 300 2014 
BETA RR 300 2T ENDURO 300 2013 
BETA RR 300 2T RACING [300]
BETA RR 300 2T RACING 300 2023 
BETA RR 300 2T RACING 300 2022 
BETA RR 300 2T RACING 300 2021 
BETA RR 300 2T RACING 300 2020 
BETA RR 300 2T [300]
BETA RR 300 2T 300 2023 
BETA RR 300 2T 300 2022 
BETA RR 300 2T 300 2021 
BETA RR 300 2T 300 2020 
BETA RR 350 4T RACING [350]
BETA RR 350 4T RACING 350 2022 
BETA RR 350 4T RACING 350 2021 
BETA RR 350 4T RACING 350 2020 
BETA RR 350 4T 350 2022 
BETA RR 350 4T 350 2021 
BETA RR 350 4T 350 2020 
BETA RR 390 4T ENDURO EFI RACING [390]
BETA RR 390 4T ENDURO EFI RACING 390 2016 
BETA RR 390 4T ENDURO EFI [390]
BETA RR 390 4T ENDURO EFI 390 2019 
BETA RR 390 4T ENDURO EFI 390 2018 
BETA RR 390 4T ENDURO EFI 390 2017 
BETA RR 390 4T ENDURO EFI 390 2016 
BETA RR 390 4T ENDURO RACING [390]
BETA RR 390 4T ENDURO RACING 390 2019 
BETA RR 390 4T ENDURO RACING 390 2015 
BETA RR 390 4T ENDURO [390]
BETA RR 390 4T ENDURO 390 2015 
BETA RR 390 4T RACING [390]
BETA RR 390 4T RACING 390 2023 
BETA RR 390 4T RACING 390 2022 
BETA RR 390 4T RACING 390 2021 
BETA RR 390 4T RACING 390 2020 
BETA RR 390 4T [390]
BETA RR 390 4T 390 2023 
BETA RR 390 4T 390 2022 
BETA RR 390 4T 390 2021 
BETA RR 390 4T 390 2020 
BETA RR 430 4T RACING [430]
BETA RR 430 4T RACING 430 2023
BETA RR 430 4T RACING 430 2022 
BETA RR 430 4T RACING 430 2021 
BETA RR 430 4T RACING 430 2020 
BETA RR 430 4T [430]
BETA RR 430 4T 430 2023 
BETA RR 430 4T 430 2022 
BETA RR 430 4T 430 2021 
BETA RR 430 4T 430 2020 
BETA RR 480 4T RACING [480]
BETA RR 480 4T RACING 480 2022 
BETA RR 480 4T RACING 480 2021 
BETA RR 480 4T RACING 480 2020 
BETA RR 480 4T [480]
BETA RR 480 4T 480 2022 
BETA RR 480 4T 480 2021 
BETA RR 480 4T 480 2020 
BETA XTRAINER 250 2T [250]
BETA XTRAINER 250 2T 250 2022 
BETA XTRAINER 250 2T 250 2021 
BETA XTRAINER 250 2T 250 2020 
BETA XTRAINER 250 2T 250 2019 
BETA XTRAINER 250 2T 250 2018 
BETA XTRAINER 300 2T [300]
BETA XTRAINER 300 2T 300 2022 
BETA XTRAINER 300 2T 300 2021
BETA XTRAINER 300 2T 300 2020 
BETA XTRAINER 300 2T 300 2015