ATHENA Crankshaft Bearing for BETA, KTM, HUSQVARNA and HUSABERG 2008-2024

ATHENA offers this engine bearing for BETA, KTM, HUSQVARNA and HUSABERG 2008-2024. The engine’s shafts run on ball or roller bearings in the cases. They carry heavy loads at high revs and eventually develop play.

What is this bearing made of?

Races and balls (or rollers) in hardened chrome steel, 100Cr6 type: a very hard steel that withstands the fatigue of millions of engine revolutions.

• Open bearing: unsealed, it is lubricated and cooled by the engine oil; clean oil is its best protection.
• C3 / C4 internal clearance: slightly more clearance than normal for a hot engine’s expansion; always refit the original clearance.
• Limit: it dislikes dust and old oil; running short of oil destroys it within minutes.

Why choose ATHENA?

Athena, founded in 1973 by Giovanni Mancassola near Vicenza and based in Alonte (Italy), designs gaskets, pistons and cylinder kits; it supplies original equipment to manufacturers such as KTM, Ducati, Fantic and Triumph.

When should you replace the bearings on your BETA RR 350?

On competition bikes the main bearings are replaced at every bottom-end rebuild, at the hours recommended by the manufacturer. With the cases open, spin each bearing by hand: the slightest rough spot means it must go.

Specifications and fitting tips

• Manufacturer part number: MS350720170C4

Spare parts and items to plan

• Engine oil seals : PROX · ATHENA
• Complete engine gasket kit : see the selection
• Gearbox bearings : see the selection

Compatibility

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

Fits:
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 2012
BETA RR 350 2011
BETA RR 390 2024
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 400 2014
BETA RR 400 2013
BETA RR 400 2012
BETA RR 400 2011
BETA RR 400 2010
BETA RR 430 2024
BETA RR 430 2023
BETA RR 430 2022
BETA RR 430 2021
BETA RR 430 2020
BETA RR 430 2019
BETA RR 430 2018
BETA RR 430 2017
BETA RR 430 2016
BETA RR 430 2015
BETA RR 450 2014
BETA RR 450 2013
BETA RR 450 2012
BETA RR 450 2011
BETA RR 450 2010
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 498 2014
BETA RR 498 2013
BETA RR 498 2012
BETA RR 520 2011
BETA RR 520 2010
HUSABERG FE 450 2014
HUSABERG FE 450 2013
HUSABERG FE 501 2014
HUSABERG FE 501 2013
HUSQVARNA FC 450 2015
HUSQVARNA FC 450 2014
HUSQVARNA FE 450 2016
HUSQVARNA FE 450 2015
HUSQVARNA FE 450 2014
HUSQVARNA FE 501 2016
HUSQVARNA FE 501 2015
HUSQVARNA FE 501 2014
KTM EXC 400 2011
KTM EXC 400 2010
KTM EXC 400 2009
KTM EXC 450 2016
KTM EXC 450 2015
KTM EXC 450 2014
KTM EXC 450 2013
KTM EXC 450 2012
KTM EXC 450 2011
KTM EXC 450 2010
KTM EXC 450 2009
KTM EXC 450 2008
KTM EXC 500 2016
KTM EXC 500 2015
KTM EXC 500 2014
KTM EXC 500 2013
KTM EXC 500 2012
KTM EXC 530 2011
KTM EXC 530 2010
KTM EXC 530 2009
KTM EXC 530 2008
KTM SXF 450 2015
KTM SXF 450 2014
KTM SXF 450 2013