ATHENA Engine Bearing for YAMAHA DT 125, WR 200 1991-2006

ATHENA offers this engine bearing for YAMAHA DT 125, WR 200 1991-2006. The engine’s shafts run on ball or roller bearings in the cases. They carry heavy loads at high revs and eventually develop play.

What is this bearing made of?

Races and balls (or rollers) in hardened chrome steel, 100Cr6 type: a very hard steel that withstands the fatigue of millions of engine revolutions.

• Open bearing: unsealed, it is lubricated and cooled by the engine oil; clean oil is its best protection.
• C3 / C4 internal clearance: slightly more clearance than normal for a hot engine’s expansion; always refit the original clearance.
• Limit: it dislikes dust and old oil; running short of oil destroys it within minutes.

Why choose ATHENA?

Athena, founded in 1973 by Giovanni Mancassola near Vicenza and based in Alonte (Italy), designs gaskets, pistons and cylinder kits; it supplies original equipment to manufacturers such as KTM, Ducati, Fantic and Triumph.

When should you replace the bearings on your YAMAHA WR 200?

On competition bikes the main bearings are replaced at every bottom-end rebuild, at the hours recommended by the manufacturer. With the cases open, spin each bearing by hand: the slightest rough spot means it must go.

Specifications and fitting tips

• Type: 6305RI
• Manufacturer part number: MS250620160YYK

Spare parts and items to plan

• Complete engine gasket kit : ATHENA P400485850101 · ATHENA P400485850102
• Engine oil seals : ATHENA · CENTAURO
• Gearbox oil : LIQUI MOLY 10W30 1 L · LIQUI MOLY 1 L

Compatibility

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

Fits:
YAMAHA DT 125 2006
YAMAHA DT 125 2005
YAMAHA WR 200 1997
YAMAHA WR 200 1996
YAMAHA WR 200 1995
YAMAHA WR 200 1994
YAMAHA WR 200 1993
YAMAHA WR 200 1992
YAMAHA WR 200 1991