ATHENA Engine Bearing for YAMAHA WRF 250, YZF 450 2001-2008

On YAMAHA WRF 250, YZF 450 from 2001 to 2008, the ATHENA MS220500140J3 engine bearing fits in place of the original part. In a motocross engine, the bearings spin fast and take hard knocks. Replacing a tired bearing at the right time saves the crankcase or the gearbox from damage.

Specifications

• Brand: ATHENA
• Manufacturer part number: MS220500140J3
• EAN code: 4547359756425
• Weight: 130 g
• Engine: 4-stroke

When to replace it?

• Bearing noise or engine rumble.
• Play or tight spot when turning the bearing by hand.
• Signs of overheating or rust on the races.

During an engine rebuild, or as soon as a bearing shows play or tight spots.

Fitting tips

1. Heat the crankcase (around 100 to 120 °C) to remove the old bearing and fit the new one without force.
2. Only push on the race that is the tight fit: outer race in the crankcase, inner race on the shaft.
3. Check which way round it goes if the bearing has a shielded side.
4. Close up with new gaskets or a complete engine gasket kit.

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

• Complete engine gasket kit : see the selection
• Engine oil seals : PROX · MOOSE
• Gearbox oil : LIQUI MOLY 10W30 1 L · LIQUI MOLY 1 L

Frequently asked questions

Is the bearing OEM quality?
It is supplied by Athena; the bearing brand (SKF, KOYO, NTN…) is given in the specifications when it is known.

Compatibility

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

Fits:
YAMAHA WRF 250 2005
YAMAHA WRF 250 2004
YAMAHA WRF 250 2003
YAMAHA WRF 250 2002
YAMAHA WRF 250 2001
YAMAHA YZF 450 2008
YAMAHA YZF 450 2007
YAMAHA YZF 450 2006
YAMAHA YZF 450 2005
YAMAHA YZF 450 2004
YAMAHA YZF 450 2003