RFX steel front sprocket 428 pitch for KTM EXC 50, SX 105, SX 85, HUSQVARNA TC 85, BETA EVO 80 2T SENIOR and GAS GAS MC 85

RFX offers this front sprocket for KTM EXC 50, SX 105, SX 85, HUSQVARNA TC 85, BETA EVO 80 2T SENIOR and GAS GAS MC 85 1996-2027. 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 teeth count: 13
• Front sprocket version: Standard
• CNC Machined to extremely tight tolerances.
• Case Hardened and core refined Alloy steel that gives you the best strength and durability.

Available in several colours.

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 : RFX · SCAR
• Drive chain : AFAM A420R1-G · AFAM A420MX2-G
• 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 EVO 80 2T SENIOR 2020
BETA EVO 80 2T SENIOR 2019
BETA EVO 80 2T SENIOR 2018
BETA EVO 80 2T SENIOR 2017
BETA EVO 80 2T SENIOR 2016
BETA EVO 80 2T SENIOR 2015
BETA EVO 80 2T SENIOR 2014
BETA EVO 80 2T SENIOR 2013
BETA EVO 80 2T SENIOR 2012
BETA EVO 80 2T SENIOR 2011
BETA EVO 80 2T SENIOR 2010
BETA EVO 80 2T SENIOR 2009
GAS GAS MC 85 2027
GAS GAS MC 85 2026
GAS GAS MC 85 2025
GAS GAS MC 85 2024
GAS GAS MC 85 2023
GAS GAS MC 85 2022
GAS GAS MC 85 2021
HUSQVARNA TC 85 2027
HUSQVARNA TC 85 2026
HUSQVARNA TC 85 2025
HUSQVARNA TC 85 2024
HUSQVARNA TC 85 2023
HUSQVARNA TC 85 2022
HUSQVARNA TC 85 2021
HUSQVARNA TC 85 2020
HUSQVARNA TC 85 2019
HUSQVARNA TC 85 2018
HUSQVARNA TC 85 2017
HUSQVARNA TC 85 2016
HUSQVARNA TC 85 2015
HUSQVARNA TC 85 2014
KTM EXC 50 2003
KTM EXC 50 2002
KTM EXC 50 2001
KTM EXC 50 2000
KTM EXC 50 1999
KTM EXC 50 1998
KTM EXC 50 1997
KTM EXC 50 1996
KTM SX 105 2010
KTM SX 105 2009
KTM SX 105 2008
KTM SX 105 2007
KTM SX 105 2006
KTM SX 105 2005
KTM SX 105 2004
KTM SX 85 2027
KTM SX 85 2026
KTM SX 85 2025
KTM SX 85 2024
KTM SX 85 2023
KTM SX 85 2022
KTM SX 85 2021
KTM SX 85 2020
KTM SX 85 2019
KTM SX 85 2018
KTM SX 85 2017
KTM SX 85 2016
KTM SX 85 2015
KTM SX 85 2014
KTM SX 85 2013
KTM SX 85 2012
KTM SX 85 2011
KTM SX 85 2010
KTM SX 85 2009
KTM SX 85 2008
KTM SX 85 2007
KTM SX 85 2006
KTM SX 85 2005
KTM SX 85 2004
KTM SX 85 2003