ATHENA Fork Oil Seal Kit 38x50x10.5 mm for KAWASAKI, SUZUKI, APRILIA and CAGIVA 1979-1997

The ATHENA 38x50x10.5 mm P40FORK455044 fork oil seal kit is designed for KAWASAKI KDX 200, KDX 250, KL 600, KLR 600, KLR 650, KX 80, KX 125, KX 250, SUZUKI PE 175, RM 125, RM 250, RM 400, TS 250, APRILIA ETX 350 and CAGIVA WMX 125 from 1979 to 1997. 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: P40FORK455044
• EAN code: 8055681307797
• 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 P40FORK455096
• Fork oil : LIQUI MOLY 10W 500 ml
• Fork bushings : ATHENA · KYB

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:
APRILIA ETX 350 1989
APRILIA ETX 350 1988
APRILIA ETX 350 1987
APRILIA ETX 350 1986
APRILIA ETX 350 1985
CAGIVA WMX 125 1982
CAGIVA WMX 125 1981
KAWASAKI KDX 200 1985
KAWASAKI KDX 200 1984
KAWASAKI KDX 200 1983
KAWASAKI KDX 250 1984
KAWASAKI KDX 250 1983
KAWASAKI KDX 250 1982
KAWASAKI KDX 250 1981
KAWASAKI KDX 250 1980
KAWASAKI KL 600 1991
KAWASAKI KL 600 1990
KAWASAKI KL 600 1989
KAWASAKI KL 600 1988
KAWASAKI KL 600 1987
KAWASAKI KL 600 1986
KAWASAKI KL 600 1985
KAWASAKI KL 600 1984
KAWASAKI KLR 600 1994
KAWASAKI KLR 600 1993
KAWASAKI KLR 600 1992
KAWASAKI KLR 600 1991
KAWASAKI KLR 600 1990
KAWASAKI KLR 600 1989
KAWASAKI KLR 600 1988
KAWASAKI KLR 600 1987
KAWASAKI KLR 600 1986
KAWASAKI KLR 600 1985
KAWASAKI KLR 600 1984
KAWASAKI KLR 650 1989
KAWASAKI KLR 650 1988
KAWASAKI KLR 650 1987
KAWASAKI KX 80 1997
KAWASAKI KX 80 1996
KAWASAKI KX 80 1995
KAWASAKI KX 125 1981
KAWASAKI KX 125 1980
KAWASAKI KX 250 1981
KAWASAKI KX 250 1980
KAWASAKI KX 250 1979
SUZUKI PE 175 1984
SUZUKI PE 175 1983
SUZUKI PE 175 1982
SUZUKI RM 125 1983
SUZUKI RM 125 1982
SUZUKI RM 125 1981
SUZUKI RM 125 1980
SUZUKI RM 125 1979
SUZUKI RM 250 1982
SUZUKI RM 250 1981
SUZUKI RM 250 1980
SUZUKI RM 250 1979
SUZUKI RM 400 1980
SUZUKI RM 400 1979
SUZUKI TS 250 1989
SUZUKI TS 250 1988
SUZUKI TS 250 1987
SUZUKI TS 250 1986
SUZUKI TS 250 1985