ATHENA NOK Fork Oil Seal Kit 46x58.1x10.5/11.5 mm for KAWASAKI KX 125, KX 250, KX 500, HONDA XR 650 and SUZUKI RM 125 1989-2018

The ATHENA 46x58.1x10.5/11.5 mm NOK P40FORK455105 fork oil seal kit is designed for KAWASAKI KX 125, KX 250, KX 500, HONDA XR 650 and SUZUKI RM 125 from 1989 to 2018. The fork oil seal keeps the oil inside the fork leg while letting the inner tube slide. It is a wear item: dust, mud and impacts on the tubes eventually damage its lip, and the fork leaks.

Specifications

• Brand: ATHENA
• Manufacturer part number: P40FORK455105
• EAN code: 8050043260819
• Weight: 50 g

When to replace it?

• Film of oil on the inner tube after a few fork strokes.
• Oil traces on the fork leg, the caliper or the brake disc.
• Fork that becomes softer on one side.

Before replacing a leaking seal, clean under its lip: a trapped grain of sand is sometimes enough to cause the leak. If it still leaks, replace the seals on both legs. Measure your seal (inside diameter, outside diameter and height) or check the original part number: the size is in the name.

Fitting tips

1. Drain and disassemble the fork leg following the manual, then remove the dust seal, the circlip and the old seal.
2. Check the fork bushings and the condition of the inner tube: a scratch or a rust spot will cut a new seal.
3. Protect the end of the tube (plastic bag), oil the lip and drive the seal in straight with a seal driver of the right diameter.
4. Refit the circlip and a new dust seal, then reset the fork oil level.

Why ATHENA?

Athena, an Italian company founded in 1973 near Vicenza, designs gaskets, pistons and cylinder kits for motorcycles. An OEM supplier to KTM, Ducati, Fantic, Piaggio and Triumph and a partner of the MXGP world championship, it develops its parts on the test bench and on the track with racing teams.

Spare parts and items to plan

• Fork dust seals : ATHENA P40FORK455098 · ATHENA P40FORK455099
• Fork oil : LIQUI MOLY 10W 500 ml
• Fork bushings : ATHENA · INNTECK

Frequently asked questions

Do I have to change both seals?
Yes: they have the same age and the same mileage. Replace both oil seals and, ideally, both dust seals.

Why is my new seal leaking?
Most often because of a scratched or pitted tube, a lip turned back during installation, or worn bushings that let the tube develop play.

Compatibility

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

Fits:
HONDA XR 650 2008
HONDA XR 650 2007
HONDA XR 650 2006
HONDA XR 650 2005
HONDA XR 650 2004
HONDA XR 650 2003
HONDA XR 650 2002
HONDA XR 650 2001
HONDA XR 650 2000
KAWASAKI KX 125 2018
KAWASAKI KX 125 2017
KAWASAKI KX 125 2016
KAWASAKI KX 125 2015
KAWASAKI KX 125 2014
KAWASAKI KX 125 2013
KAWASAKI KX 125 2012
KAWASAKI KX 125 2011
KAWASAKI KX 125 2010
KAWASAKI KX 125 2009
KAWASAKI KX 125 2008
KAWASAKI KX 125 2007
KAWASAKI KX 125 2006
KAWASAKI KX 125 2005
KAWASAKI KX 125 2004
KAWASAKI KX 125 2003
KAWASAKI KX 125 2002
KAWASAKI KX 125 2001
KAWASAKI KX 125 2000
KAWASAKI KX 125 1999
KAWASAKI KX 125 1998
KAWASAKI KX 125 1997
KAWASAKI KX 125 1996
KAWASAKI KX 125 1995
KAWASAKI KX 125 1994
KAWASAKI KX 125 1993
KAWASAKI KX 125 1992
KAWASAKI KX 125 1991
KAWASAKI KX 125 1990
KAWASAKI KX 125 1989
KAWASAKI KX 250 2017
KAWASAKI KX 250 2016
KAWASAKI KX 250 2015
KAWASAKI KX 250 2014
KAWASAKI KX 250 2013
KAWASAKI KX 250 2012
KAWASAKI KX 250 2011
KAWASAKI KX 250 2010
KAWASAKI KX 250 2009
KAWASAKI KX 250 2008
KAWASAKI KX 250 2007
KAWASAKI KX 250 2006
KAWASAKI KX 250 2005
KAWASAKI KX 250 2004
KAWASAKI KX 250 2003
KAWASAKI KX 250 2002
KAWASAKI KX 250 2001
KAWASAKI KX 250 2000
KAWASAKI KX 250 1999
KAWASAKI KX 250 1998
KAWASAKI KX 250 1997
KAWASAKI KX 250 1996
KAWASAKI KX 250 1995
KAWASAKI KX 250 1994
KAWASAKI KX 250 1993
KAWASAKI KX 250 1992
KAWASAKI KX 250 1991
KAWASAKI KX 250 1990
KAWASAKI KX 250 1989
KAWASAKI KX 500 2018
KAWASAKI KX 500 2017
KAWASAKI KX 500 2016
KAWASAKI KX 500 2015
KAWASAKI KX 500 2014
KAWASAKI KX 500 2013
KAWASAKI KX 500 2012
KAWASAKI KX 500 2011
KAWASAKI KX 500 2010
KAWASAKI KX 500 2009
KAWASAKI KX 500 2008
KAWASAKI KX 500 2007
KAWASAKI KX 500 2006
KAWASAKI KX 500 2005
KAWASAKI KX 500 2004
KAWASAKI KX 500 2003
KAWASAKI KX 500 2002
KAWASAKI KX 500 2001
KAWASAKI KX 500 2000
KAWASAKI KX 500 1999
KAWASAKI KX 500 1998
KAWASAKI KX 500 1997
KAWASAKI KX 500 1996
KAWASAKI KX 500 1995
KAWASAKI KX 500 1994
KAWASAKI KX 500 1993
KAWASAKI KX 500 1992
KAWASAKI KX 500 1991
KAWASAKI KX 500 1990
KAWASAKI KX 500 1989
SUZUKI RM 125 1989