ATHENA Fork Oil Seal Kit 35x47x9.5/10.5 mm for APRILIA, BETA and HUSQVARNA 1981-2004

The ATHENA 35x47x9.5/10.5 mm P40FORK455029 fork oil seal kit is designed for APRILIA CLIMBER 280, MX 50, RX 50, TUAREG 125, TX 125, HUSQVARNA CR 125, WR 250 and BETA RX 250 from 1981 to 2004. Fitted at the top of the fork leg, under the dust seal, the oil seal keeps the fork sealed. A leak lowers the oil level, the damping changes and oil can run onto the brake disc.

Specifications

• Brand: ATHENA
• Manufacturer part number: P40FORK455029
• EAN code: 8050043260710
• Weight: 60 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?

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

• Fork dust seals : ATHENA P40FORK455179 · ATHENA P40FORK455226
• Fork oil : LIQUI MOLY 10W 500 ml
• Fork bushings : ATHENA S41TI45M · ATHENA S41TE45M

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 CLIMBER 280 1994
APRILIA CLIMBER 280 1993
APRILIA CLIMBER 280 1992
APRILIA CLIMBER 280 1991
APRILIA MX 50 1983
APRILIA MX 50 1982
APRILIA RX 50 2004
APRILIA RX 50 2003
APRILIA RX 50 2002
APRILIA RX 50 2001
APRILIA RX 50 2000
APRILIA RX 50 1999
APRILIA RX 50 1998
APRILIA RX 50 1997
APRILIA RX 50 1996
APRILIA RX 50 1995
APRILIA RX 50 1994
APRILIA RX 50 1993
APRILIA RX 50 1992
APRILIA RX 50 1990
APRILIA RX 50 1989
APRILIA TUAREG 125 1987
APRILIA TUAREG 125 1986
APRILIA TUAREG 125 1985
APRILIA TX 125 1986
APRILIA TX 125 1985
BETA RX 250 1986
BETA RX 250 1985
HUSQVARNA CR 125 1981
HUSQVARNA WR 250 1981