ATHENA Crankshaft Bearing for YAMAHA, SUZUKI, FANTIC and GAS GAS 1998-2027

The ATHENA MS300720190YSK crankshaft bearing is designed for YAMAHA WRF 400, WRF 426, WRF 450, YFZ 450, YZF 400, YZF 426, YZF 450, FANTIC XEF 450, XXF 450, SUZUKI RMZ 450 and GAS GAS ECF 450 from 1998 to 2027. Housed in the crankcase, this bearing guides the crankshaft. A tired bearing gives itself away with rumbling and vibration; it is replaced with the cases split, together with the one on the other side.

Specifications

• Brand: ATHENA
• Manufacturer part number: MS300720190YSK
• EAN code: 4549250206832
• Weight: 330 g
• Engine: 4-stroke

When to replace it?

• Rumbling that changes with the revs.
• Radial or side play in the crankshaft.
• Tight spot or noise when turning the bearing by hand.

During a bottom end rebuild: always replace both crankshaft bearings together.

Fitting tips

1. Heat the crankcase half (around 100 to 120 °C) to remove the old bearing and fit the new one without force.
2. Put the new bearing in the freezer before fitting: it will go in more easily.
3. Replace the crankshaft oil seals at the same time.
4. Close up with a complete engine gasket kit.

Why ATHENA?

Founded in 1973 near Vicenza, Athena is an Italian engine gasket specialist that has made its gaskets on its own production lines since day one, as well as a renowned manufacturer of pistons and cylinder kits. The brand supplies original equipment to manufacturers such as KTM, Ducati, Fantic, Piaggio and Triumph, and is a partner of the MXGP motocross world championship.

Spare parts and items to plan

• Engine oil seals : MOOSE · PROX
• Complete engine gasket kit : see the selection
• Gearbox bearings : HOT RODS TBK0071 · HOT RODS TBK0068

Frequently asked questions

Do both bearings need replacing?
Yes: they have done the same number of hours and wear together.

Compatibility

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

Fits:
FANTIC XEF 450 2024
FANTIC XEF 450 2023
FANTIC XEF 450 2022
FANTIC XXF 450 2024
FANTIC XXF 450 2023
GAS GAS ECF 450 2015
GAS GAS ECF 450 2014
GAS GAS ECF 450 2013
SUZUKI RMZ 450 2027
SUZUKI RMZ 450 2026
SUZUKI RMZ 450 2025
SUZUKI RMZ 450 2024
SUZUKI RMZ 450 2023
SUZUKI RMZ 450 2022
SUZUKI RMZ 450 2021
SUZUKI RMZ 450 2020
SUZUKI RMZ 450 2019
SUZUKI RMZ 450 2018
SUZUKI RMZ 450 2017
SUZUKI RMZ 450 2016
SUZUKI RMZ 450 2015
SUZUKI RMZ 450 2014
SUZUKI RMZ 450 2013
SUZUKI RMZ 450 2012
SUZUKI RMZ 450 2011
SUZUKI RMZ 450 2010
SUZUKI RMZ 450 2009
SUZUKI RMZ 450 2008
SUZUKI RMZ 450 2007
SUZUKI RMZ 450 2006
SUZUKI RMZ 450 2005
YAMAHA WRF 400 2000
YAMAHA WRF 400 1999
YAMAHA WRF 400 1998
YAMAHA WRF 426 2002
YAMAHA WRF 426 2001
YAMAHA WRF 450 2024
YAMAHA WRF 450 2023
YAMAHA WRF 450 2022
YAMAHA WRF 450 2021
YAMAHA WRF 450 2020
YAMAHA WRF 450 2019
YAMAHA WRF 450 2018
YAMAHA WRF 450 2017
YAMAHA WRF 450 2016
YAMAHA WRF 450 2015
YAMAHA WRF 450 2014
YAMAHA WRF 450 2013
YAMAHA WRF 450 2012
YAMAHA WRF 450 2011
YAMAHA WRF 450 2010
YAMAHA WRF 450 2009
YAMAHA WRF 450 2008
YAMAHA WRF 450 2007
YAMAHA WRF 450 2006
YAMAHA WRF 450 2005
YAMAHA WRF 450 2004
YAMAHA WRF 450 2003
YAMAHA YFZ 450 2013
YAMAHA YFZ 450 2012
YAMAHA YFZ 450 2011
YAMAHA YFZ 450 2010
YAMAHA YFZ 450 2009
YAMAHA YFZ 450 2008
YAMAHA YFZ 450 2007
YAMAHA YFZ 450 2006
YAMAHA YFZ 450 2005
YAMAHA YFZ 450 2004
YAMAHA YZF 400 1999
YAMAHA YZF 400 1998
YAMAHA YZF 426 2002
YAMAHA YZF 426 2001
YAMAHA YZF 426 2000
YAMAHA YZF 450 2025
YAMAHA YZF 450 2024
YAMAHA YZF 450 2023
YAMAHA YZF 450 2022
YAMAHA YZF 450 2021
YAMAHA YZF 450 2020
YAMAHA YZF 450 2019
YAMAHA YZF 450 2018
YAMAHA YZF 450 2017
YAMAHA YZF 450 2016
YAMAHA YZF 450 2015
YAMAHA YZF 450 2014
YAMAHA YZF 450 2013
YAMAHA YZF 450 2012
YAMAHA YZF 450 2011
YAMAHA YZF 450 2010
YAMAHA YZF 450 2009
YAMAHA YZF 450 2008
YAMAHA YZF 450 2007
YAMAHA YZF 450 2006
YAMAHA YZF 450 2005
YAMAHA YZF 450 2004
YAMAHA YZF 450 2003