JT SPROCKETS steel front sprocket 428 pitch for BETA RR 125, YAMAHA YZF 125, RIEJU MARATHON 125 and HM CRE 125 BAJA 4T 2004-2026

JT SPROCKETS offers this front sprocket for BETA RE 125, RE 125 4T MOTARD, RR 125, RR 125 4T MOTARD, RR 125 4T MOTARD LC, YAMAHA WR 125, WR 125 X, YZF 125, RIEJU MARATHON 125, MARATHON 125 SM PRO, MARATHON PRO 125 SM and HM CRE 125 BAJA 4T, CRM-F 125 X 2004-2026. The front sprocket sits on the gearbox output shaft and passes the engine’s power to the chain, which turns the rear sprocket and the rear wheel.

Why replace the front sprocket?

The benefits:

• An inexpensive part that protects a new chain and rear sprocket.
• Made of steel to withstand much heavier wear than the rear sprocket.
• Changing the number of teeth is the simplest, cheapest way to alter the gearing.

When should you replace the front sprocket?

Dished or hooked teeth: replace it straight away, otherwise it will ruin a new chain within hours.

Specifications and fitting tips

• Chain pitch: 428
• Material: Steel
• Front sprocket version: Standard
• Optimal lightweight design
• CNC machined for performance and lifespan

Choose the number of teeth from the list: fewer teeth on the front sprocket (or more on the rear) gives more acceleration, the opposite gives a longer gearing.

Cross-Mania tip: Replace the front sprocket together with the chain and rear sprocket, renew the sprocket nut or circlip and check the output shaft seal.

Also needed with this part

• Rear sprocket : PBR · AFAM
• Drive chain : AFAM A520XRR3-G · AFAM A428R1-G 138L
• Chain lube : LIQUI MOLY 400 ml · SCOTTOILER

Compatibility

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

Fits:
BETA RE 125 2017
BETA RE 125 2016
BETA RE 125 2015
BETA RE 125 2014
BETA RE 125 2013
BETA RE 125 2012
BETA RE 125 2011
BETA RE 125 2010
BETA RE 125 2009
BETA RE 125 2008
BETA RE 125 4T MOTARD 2014
BETA RE 125 4T MOTARD 2013
BETA RR 125 2023
BETA RR 125 2022
BETA RR 125 2021
BETA RR 125 2020
BETA RR 125 2019
BETA RR 125 2018
BETA RR 125 2017
BETA RR 125 2016
BETA RR 125 2015
BETA RR 125 2014
BETA RR 125 2013
BETA RR 125 2012
BETA RR 125 2011
BETA RR 125 2010
BETA RR 125 2009
BETA RR 125 2008
BETA RR 125 2007
BETA RR 125 2006
BETA RR 125 2005
BETA RR 125 2004
BETA RR 125 4T MOTARD 2014
BETA RR 125 4T MOTARD 2013
BETA RR 125 4T MOTARD 2012
BETA RR 125 4T MOTARD 2011
BETA RR 125 4T MOTARD 2010
BETA RR 125 4T MOTARD 2009
BETA RR 125 4T MOTARD 2008
BETA RR 125 4T MOTARD 2007
BETA RR 125 4T MOTARD 2006
BETA RR 125 4T MOTARD LC 2020
BETA RR 125 4T MOTARD LC 2019
BETA RR 125 4T MOTARD LC 2018
BETA RR 125 4T MOTARD LC 2017
BETA RR 125 4T MOTARD LC 2016
BETA RR 125 4T MOTARD LC 2015
BETA RR 125 4T MOTARD LC 2014
BETA RR 125 4T MOTARD LC 2013
BETA RR 125 4T MOTARD LC 2012
BETA RR 125 4T MOTARD LC 2011
BETA RR 125 4T MOTARD LC 2010
HM CRE 125 BAJA 4T 2015
HM CRE 125 BAJA 4T 2014
HM CRE 125 BAJA 4T 2013
HM CRE 125 BAJA 4T 2012
HM CRM-F 125 X 2011
HM CRM-F 125 X 2010
HM CRM-F 125 X 2009
HUSQVARNA TE 125 2013
HUSQVARNA TE 125 2012
HUSQVARNA TE 125 2011
RIEJU MARATHON 125 2014
RIEJU MARATHON 125 2013
RIEJU MARATHON 125 2012
RIEJU MARATHON 125 2011
RIEJU MARATHON 125 2010
RIEJU MARATHON 125 2009
RIEJU MARATHON 125 SM PRO 2020
RIEJU MARATHON PRO 125 SM 2015
RIEJU MARATHON PRO 125 SM 2014
RIEJU MARATHON PRO 125 SM 2013
RIEJU MARATHON PRO 125 SM 2012
RIEJU MARATHON PRO 125 SM 2011
RIEJU MARATHON PRO 125 SM 2010
YAMAHA WR 125 2026
YAMAHA WR 125 2014
YAMAHA WR 125 2013
YAMAHA WR 125 2012
YAMAHA WR 125 2011
YAMAHA WR 125 2010
YAMAHA WR 125 2009
YAMAHA WR 125 X 2014
YAMAHA WR 125 X 2013
YAMAHA WR 125 X 2012
YAMAHA WR 125 X 2011
YAMAHA WR 125 X 2010
YAMAHA WR 125 X 2009
YAMAHA YZF 125 2018
YAMAHA YZF 125 2017
YAMAHA YZF 125 2016
YAMAHA YZF 125 2015
YAMAHA YZF 125 2014
YAMAHA YZF 125 2013
YAMAHA YZF 125 2012
YAMAHA YZF 125 2011
YAMAHA YZF 125 2010
YAMAHA YZF 125 2009
YAMAHA YZF 125 2008