JT SPROCKETS steel rear sprocket 45T, 520 pitch for BETA RR 250, RR 300, RR 350 and HONDA CRF 450, CRF 450 RX ENDURO, CRF 450 X

JT SPROCKETS offers this rear sprocket for BETA RR 250, RR 300, RR 350, RR 390, RR 480 and HONDA CRF 250, CRF 450, CRF 450 RX ENDURO, CRF 450 X, XR 400 1996-2027. The rear sprocket receives the engine’s power through the chain and turns the rear wheel. Its number of teeth sets the gearing: with more teeth the bike accelerates harder but has a lower top speed; with fewer teeth it is the other way round.

Why fit a new rear sprocket?

The benefits:

• New teeth that hold the chain properly and make it last.
• The number of teeth is chosen to suit the terrain: more teeth for slow, tight sections, fewer for fast tracks.
• Aluminium or steel: aluminium is lighter, steel lasts much longer; “mud-release” models have cut-outs that clear the dirt.

When should you replace the rear sprocket?

Pointed, hooked or uneven teeth, or a chain that lifts easily off the back of the sprocket: the chain kit needs replacing.

Specifications and fitting tips

• Color: Steel
• Chain pitch: 520
• Material: Steel
• Rear sprocket teeth count: 45
• Rear sprocket version: Self-cleaning
• Ultra-durable high carbon C49 steel
• Manufacturer part number: JTR210.45SC

Cross-Mania tip: Replace the rear sprocket, front sprocket and chain together, tighten the sprocket bolts in a cross pattern with threadlocker and set the chain slack to the manual.

Also needed with this part

• Front sprocket : RFX FXFS 11-1 · RFX FXFS 11-1
• Drive chain : AFAM · RENTHAL
• Chain lube : LIQUI MOLY 400 ml · MUC OFF 400 ml

Compatibility

Check the exact model and year of your bike in the list below before ordering.

Fits:
BETA RR 125 2024
BETA RR 125 2023
BETA RR 125 2T X-PRO 2027
BETA RR 200 2024
BETA RR 200 2023
BETA RR 200 2022
BETA RR 200 2021
BETA RR 200 2020
BETA RR 200 2019
BETA RR 200 2T RACE 2027
BETA RR 200 2T RACE 2026
BETA RR 200 2T RACE 2025
BETA RR 200 2T X-PRO 2027
BETA RR 200 2T X-PRO 2026
BETA RR 200 2T X-PRO 2025
BETA RR 250 2024
BETA RR 250 2023
BETA RR 250 2022
BETA RR 250 2021
BETA RR 250 2020
BETA RR 250 2019
BETA RR 250 2018
BETA RR 250 2017
BETA RR 250 2016
BETA RR 250 2015
BETA RR 250 2014
BETA RR 250 2013
BETA RR 250 2T RACE 2027
BETA RR 250 2T RACE 2026
BETA RR 250 2T RACE 2025
BETA RR 250 2T X-PRO 2027
BETA RR 250 2T X-PRO 2026
BETA RR 250 2T X-PRO 2025
BETA RR 300 2024
BETA RR 300 2023
BETA RR 300 2022
BETA RR 300 2021
BETA RR 300 2020
BETA RR 300 2019
BETA RR 300 2018
BETA RR 300 2017
BETA RR 300 2016
BETA RR 300 2015
BETA RR 300 2014
BETA RR 300 2013
BETA RR 300 2T RACE 2027
BETA RR 300 2T RACE 2026
BETA RR 300 2T RACE 2025
BETA RR 300 2T X-PRO 2027
BETA RR 300 2T X-PRO 2026
BETA RR 300 2T X-PRO 2025
BETA RR 350 2024
BETA RR 350 2023
BETA RR 350 2022
BETA RR 350 2021
BETA RR 350 2020
BETA RR 350 2019
BETA RR 350 2018
BETA RR 350 2017
BETA RR 350 2016
BETA RR 350 2015
BETA RR 350 2014
BETA RR 350 2013
BETA RR 350 4T RACE 2027
BETA RR 350 4T RACE 2026
BETA RR 350 4T RACE 2025
BETA RR 350 4T X-PRO 2027
BETA RR 350 4T X-PRO 2026
BETA RR 350 4T X-PRO 2025
BETA RR 390 2023
BETA RR 390 2022
BETA RR 390 2021
BETA RR 390 2020
BETA RR 390 2019
BETA RR 390 2018
BETA RR 390 2017
BETA RR 390 2016
BETA RR 390 2015
BETA RR 390 4T X-PRO 2027
BETA RR 430 2023
BETA RR 430 2022
BETA RR 430 2021
BETA RR 430 2020
BETA RR 430 4T X-PRO 2027
BETA RR 480 2024
BETA RR 480 2023
BETA RR 480 2022
BETA RR 480 2021
BETA RR 480 2020
BETA RR 480 2019
BETA RR 480 2018
BETA RR 480 2017
BETA RR 480 2016
BETA RR 480 2015
BETA RR 480 4T X-PRO 2027
BETA XTRAINER 300 2015
HONDA CRF 250 2025
HONDA CRF 250 2024
HONDA CRF 250 2023
HONDA CRF 250 2022
HONDA CRF 250 2021
HONDA CRF 250 2020
HONDA CRF 250 RWE 2025
HONDA CRF 250 RX ENDURO 2025
HONDA CRF 250 RX ENDURO 2024
HONDA CRF 250 RX ENDURO 2023
HONDA CRF 250 RX ENDURO 2022
HONDA CRF 250 RX ENDURO 2021
HONDA CRF 250 RX ENDURO 2020
HONDA CRF 450 2025
HONDA CRF 450 2024
HONDA CRF 450 2023
HONDA CRF 450 2022
HONDA CRF 450 2021
HONDA CRF 450 2020
HONDA CRF 450 2019
HONDA CRF 450 2018
HONDA CRF 450 2017
HONDA CRF 450 2016
HONDA CRF 450 2015
HONDA CRF 450 2014
HONDA CRF 450 2013
HONDA CRF 450 2012
HONDA CRF 450 2011
HONDA CRF 450 2010
HONDA CRF 450 RWE 2025
HONDA CRF 450 RX ENDURO 2025
HONDA CRF 450 RX ENDURO 2024
HONDA CRF 450 RX ENDURO 2023
HONDA CRF 450 RX ENDURO 2022
HONDA CRF 450 RX ENDURO 2021
HONDA CRF 450 RX ENDURO 2020
HONDA CRF 450 RX ENDURO 2019
HONDA CRF 450 RX ENDURO 2018
HONDA CRF 450 RX ENDURO 2017
HONDA CRF 450 X 2025
HONDA CRF 450 X 2024
HONDA CRF 450 X 2023
HONDA CRF 450 X 2022
HONDA CRF 450 X 2021
HONDA CRF 450 X 2020
HONDA CRF 450 X 2019
HONDA CRF 450 X 2018
HONDA CRF 450 X 2017
HONDA CRF 450 X 2016
HONDA CRF 450 X 2015
HONDA CRF 450 X 2014
HONDA CRF 450 X 2013
HONDA CRF 450 X 2012
HONDA CRF 450 X 2011
HONDA CRF 450 X 2010
HONDA CRF 450 X 2009
HONDA CRF 450 X 2008
HONDA CRF 450 X 2007
HONDA CRF 450 X 2006
HONDA CRF 450 X 2005
HONDA XR 400 2004
HONDA XR 400 2003
HONDA XR 400 2002
HONDA XR 400 2001
HONDA XR 400 2000
HONDA XR 400 1999
HONDA XR 400 1998
HONDA XR 400 1997
HONDA XR 400 1996