ATHENA Engine Bearing for KAWASAKI, HUSQVARNA, YAMAHA and HONDA 1973-2012

ATHENA offers this engine bearing for KAWASAKI, HUSQVARNA, YAMAHA and HONDA 1973-2012. 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 KAWASAKI KX 500?

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: 6306C3
• Manufacturer part number: MS300720190C3K

Spare parts and items to plan

• Complete engine gasket kit : ATHENA · PROX
• Engine oil seals : CENTAURO · INNTECK
• Gearbox oil : LIQUI MOLY 10W30 1 L · LIQUI MOLY 80W 500 ml

Compatibility

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

Fits:
HONDA CR 250 1977
HONDA CR 250 1976
HONDA CR 250 1975
HONDA CR 250 1974
HONDA CR 250 1973
HUSQVARNA TC 610 2001
HUSQVARNA TC 610 2000
HUSQVARNA TC 610 1999
HUSQVARNA TC 610 1998
HUSQVARNA TC 610 1997
HUSQVARNA TC 610 1996
HUSQVARNA TC 610 1995
HUSQVARNA TC 610 1994
HUSQVARNA TC 610 1993
HUSQVARNA TC 610 1992
HUSQVARNA TE 400 2004
HUSQVARNA TE 400 2003
HUSQVARNA TE 400 2002
HUSQVARNA TE 400 2001
HUSQVARNA TE 410 2000
HUSQVARNA TE 410 1999
HUSQVARNA TE 410 1998
HUSQVARNA TE 410 1997
HUSQVARNA TE 570 2004
HUSQVARNA TE 570 2003
HUSQVARNA TE 570 2002
HUSQVARNA TE 570 2001
KAWASAKI KLX 250 2012
KAWASAKI KLX 250 2011
KAWASAKI KLX 250 2010
KAWASAKI KLX 250 2009
KAWASAKI KLX 300 2003
KAWASAKI KLX 300 2002
KAWASAKI KLX 300 2001
KAWASAKI KLX 300 2000
KAWASAKI KLX 300 1999
KAWASAKI KLX 300 1998
KAWASAKI KLX 300 1997
KAWASAKI KX 500 2004
KAWASAKI KX 500 2003
KAWASAKI KX 500 2002
KAWASAKI KX 500 2001
KAWASAKI KX 500 2000
KAWASAKI KX 500 1999
KAWASAKI KX 500 1998
KAWASAKI KX 500 1997
KAWASAKI KX 500 1996
KAWASAKI KX 500 1995
KAWASAKI KX 500 1994
KAWASAKI KX 500 1993
KAWASAKI KX 500 1992
KAWASAKI KX 500 1991
KAWASAKI KX 500 1990
KAWASAKI KX 500 1989
KAWASAKI KX 500 1988
KAWASAKI KX 500 1987
KAWASAKI KX 500 1986
KAWASAKI KX 500 1985
KAWASAKI KX 500 1984
KAWASAKI KX 500 1983
YAMAHA YZ 490 1990
YAMAHA YZ 490 1989
YAMAHA YZ 490 1988
YAMAHA YZ 490 1987
YAMAHA YZ 490 1986
YAMAHA YZ 490 1985
YAMAHA YZ 490 1984
YAMAHA YZ 490 1983
YAMAHA YZ 490 1982
YAMAHA YZF 400 1979
YAMAHA YZF 400 1978
YAMAHA YZF 400 1977
YAMAHA YZF 400 1976
YAMAHA YZF 426 2002
YAMAHA YZF 426 2001
YAMAHA YZF 426 2000