ATHENA Front Wheel Bearing Kit with seals for YAMAHA YZ 125, YZ 250, YZF 250, YZF 400, YZF 426, YZF 450 1998-2026

On YAMAHA YZ 125, YZ 250, YZF 250, YZF 400, YZF 426, YZF 450 from 1998 to 2026, the ATHENA W445006F wheel bearing kit fits in place of the original part. Housed in the hub, wheel bearings are protected only by their seals. Once water gets in, they rust fast: the wheel develops play, the hub heats up and the bearing can end up seizing or spinning in its housing.

Specifications

• Brand: ATHENA
• Manufacturer part number: W445006F
• EAN code: 8057018263059
• Contents: bearings and seals
• Weight: 110 g

When to replace it?

• Wheel play: with the bike on a stand, grab the wheel at the top and bottom and rock it.
• With the axle out, bearings that turn with tight spots or a grinding noise.
• Brake disc rubbing on and off against the pads.
• Hub seals hardened or torn, rust around the axle.

Check the wheels for play after every pressure wash or ride through water, and replace the bearings at the slightest play or tight spot. Always change all the bearings in a wheel at the same time, together with their seals: a new bearing fitted next to a worn one won't last.

Fitting tips

1. Remove the wheel, then the side spacers and the hub seals.
2. Drive the bearings out with an expanding bearing puller, or from inside the hub by pushing the centre spacer aside and tapping alternately on each side of the inner race.
3. Clean the hub, warm it slightly (around 80 °C, with a heat gun) and fit the new bearings, pressing only on the outer race.
4. Put the centre spacer back between the bearings, then fit new seals packed with waterproof grease.
5. Refit the wheel, torque the axle to the figure in the manual and check that the wheel spins freely, with no play.

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

• Grease : MOTUL 400 g
• Wheel seals : PIVOT WORKS PWRWK-Y08-421 · PIVOT WORKS PWRWK-Y09-421
• Wheel spacers : RFX 22010 · RFX 22012

Frequently asked questions

Should I change the bearings on both sides?
Yes: replace all the bearings in the wheel together, they have the same amount of wear. It's also the moment to fit new wheel seals.

What is the centre spacer for?
It keeps the bearings the right distance apart when you tighten the axle. If it's left out or badly positioned, the bearings get crushed sideways and only last a few hours.

Why do my bearings wear out so fast?
A pressure-washer jet aimed at the hub, worn seals or scored spacers let water in. Change the seals along with the bearings and avoid aiming at the hubs when you wash the bike.

Compatibility

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

Fits:
YAMAHA YZ 125 2026
YAMAHA YZ 125 2025
YAMAHA YZ 125 2024
YAMAHA YZ 125 2023
YAMAHA YZ 125 2022
YAMAHA YZ 125 2021
YAMAHA YZ 125 2020
YAMAHA YZ 125 2019
YAMAHA YZ 125 2018
YAMAHA YZ 125 2017
YAMAHA YZ 125 2016
YAMAHA YZ 125 2015
YAMAHA YZ 125 2014
YAMAHA YZ 125 2013
YAMAHA YZ 125 2012
YAMAHA YZ 125 2011
YAMAHA YZ 125 2010
YAMAHA YZ 125 2009
YAMAHA YZ 125 2008
YAMAHA YZ 125 2007
YAMAHA YZ 125 2006
YAMAHA YZ 125 2005
YAMAHA YZ 125 2004
YAMAHA YZ 125 2003
YAMAHA YZ 125 2002
YAMAHA YZ 125 2001
YAMAHA YZ 125 2000
YAMAHA YZ 125 1999
YAMAHA YZ 125 1998
YAMAHA YZ 250 2026
YAMAHA YZ 250 2025
YAMAHA YZ 250 2024
YAMAHA YZ 250 2023
YAMAHA YZ 250 2022
YAMAHA YZ 250 2021
YAMAHA YZ 250 2020
YAMAHA YZ 250 2019
YAMAHA YZ 250 2018
YAMAHA YZ 250 2017
YAMAHA YZ 250 2016
YAMAHA YZ 250 2015
YAMAHA YZ 250 2014
YAMAHA YZ 250 2013
YAMAHA YZ 250 2012
YAMAHA YZ 250 2011
YAMAHA YZ 250 2010
YAMAHA YZ 250 2009
YAMAHA YZ 250 2008
YAMAHA YZ 250 2007
YAMAHA YZ 250 2006
YAMAHA YZ 250 2005
YAMAHA YZ 250 2004
YAMAHA YZ 250 2003
YAMAHA YZ 250 2002
YAMAHA YZ 250 2001
YAMAHA YZ 250 2000
YAMAHA YZ 250 1999
YAMAHA YZ 250 1998
YAMAHA YZF 250 2013
YAMAHA YZF 250 2012
YAMAHA YZF 250 2011
YAMAHA YZF 250 2010
YAMAHA YZF 250 2009
YAMAHA YZF 250 2008
YAMAHA YZF 250 2007
YAMAHA YZF 250 2006
YAMAHA YZF 250 2005
YAMAHA YZF 250 2004
YAMAHA YZF 250 2003
YAMAHA YZF 250 2002
YAMAHA YZF 250 2001
YAMAHA YZF 400 1999
YAMAHA YZF 400 1998
YAMAHA YZF 426 2002
YAMAHA YZF 426 2001
YAMAHA YZF 426 2000
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