ATHENA Engine Oil Seal Kit ref. P400130400204/1 for BETA RR 50, RIEJU MRT 50 and APRILIA MX 50, RX 50 1995-2024

The ATHENA P400130400204/1 engine oil seal kit is designed for APRILIA MX 50, RX 50, BETA RR 50 and RIEJU MRT 50 from 1995 to 2024. Oil seals (or lip seals) seal around the shafts that come out of the engine: crankshaft, countershaft, gear shift shaft, kick-start or water pump. On a two-stroke, the crankshaft seals also keep the bottom end airtight, which it needs in order to run.

Specifications

• Brand: ATHENA
• Manufacturer part number: P400130400204/1
• EAN code: 8055681305793
• Weight: 70 g
• Engine: 2-stroke

When to replace it?

• Oil around the countershaft sprocket, the gear shift shaft or the kick-start.
• On a two-stroke: unstable idle, hanging revs or a drop in the gearbox oil level.
• Lip hardened or split, or shaft marked where the seal runs.

Every time the crankcases are split, and as soon as a leak appears.

Fitting tips

1. Drive out the old seal without scratching its housing.
2. Lightly grease the lip and the housing.
3. Press the seal in perfectly square with a tube or socket of the same diameter, lip facing the oil side.
4. Protect the lip from the splines or keyways as you slide the shaft through (adhesive tape).

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

• Crankshaft bearings and seals : see the selection
• Complete engine gasket kit : ATHENA P400130850211 · ATHENA P400130850204
• Gearbox oil : LIQUI MOLY 10W30 1 L · LIQUI MOLY 500 ml

Frequently asked questions

Which seals are included?
The engine's oil seals, depending on the model: crankshaft, countershaft, gear shift shaft, kick-start or water pump. If in doubt, compare with your original parts.

Cases split: what else should I replace?
The crankshaft bearings and a complete engine gasket kit.

Compatibility

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

Fits:
APRILIA MX 50 2004
APRILIA MX 50 2003
APRILIA MX 50 2002
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
BETA RR 50 2024
BETA RR 50 2023
BETA RR 50 2022
BETA RR 50 2021
BETA RR 50 2020
BETA RR 50 2019
BETA RR 50 2018
BETA RR 50 2017
BETA RR 50 2016
BETA RR 50 2015
BETA RR 50 2014
BETA RR 50 2013
BETA RR 50 2012
BETA RR 50 2011
BETA RR 50 2010
BETA RR 50 2009
BETA RR 50 2008
BETA RR 50 2007
BETA RR 50 2006
BETA RR 50 2005
BETA RR 50 2004
BETA RR 50 2003
BETA RR 50 2002
BETA RR 50 2001
BETA RR 50 2000
BETA RR 50 1999
BETA RR 50 1998
RIEJU MRT 50 2024
RIEJU MRT 50 2023
RIEJU MRT 50 2022
RIEJU MRT 50 2021
RIEJU MRT 50 2020
RIEJU MRT 50 2019
RIEJU MRT 50 2018
RIEJU MRT 50 2017
RIEJU MRT 50 2016
RIEJU MRT 50 2015
RIEJU MRT 50 2014
RIEJU MRT 50 2013
RIEJU MRT 50 2012
RIEJU MRT 50 2011
RIEJU MRT 50 2010
RIEJU MRT 50 2009