Wössner Pro Series Forged Piston for YAMAHA TT 600, TT 600 RE, XT 600, YFM 600 GRIZZLY 4WD 1984-2004

WOSSNER offers this piston kit for YAMAHA TT 600, TT 600 RE, XT 600, YFM 600 GRIZZLY 4WD 1984-2004. The piston slides in the cylinder and takes the force of the air-fuel combustion, passing it to the connecting rod and crankshaft.

Why choose a forged piston?

Instead of simply being cast, a forged piston is hot-pressed under very high pressure and then machined: its metal is denser and free of air pockets.

• Stronger when hot: it copes better with high revs, overheating and detonation.
• Lighter for the same strength: less stress on the connecting rod and bearings.
• Good to know: depending on the alloy, it expands a little more and is fitted with more clearance; slight noise when cold is normal.
• Why does it cost more? Forging tools, full machining and surface treatments cost more than simple casting.

Why choose WOSSNER?

Wössner has forged its own pistons since 1994: Molykote-coated skirt to reduce friction and ease running-in, kit supplied complete with rings, pin and clips.

When should you replace the piston on your YAMAHA XT 600?

Harder starting, loss of power, blue smoke, oil consumption or a knock when cold: these are the signs of a tired top end.

No manufacturer hour figure for this model. Cross-Mania guideline: compression check every 50 h in hard use and every 100 h for leisure.

Specifications and fitting tips

• Material: Aluminium
• Piston compression: Standard
• Piston type: Forged
• Rings Quantity: 3
• Stroke: 4T
• Forged piston

Available in several sizes: choose the one that matches your cylinder (stamped size or measured bore).

Cross-Mania tip: Measure the cylinder bore before ordering: the piston must match your cylinder size. Follow the manufacturer's break-in procedure and replace the top-end gaskets at the same time.

Also needed with this part

• Top-end gasket kit : ATHENA · PROX
• Spark plug : see the selection
• 4-stroke engine oil : LIQUI MOLY 10W40 1 L · MOTUL 10W50
• Air filter : TECNIUM

Compatibility

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

Fits:
YAMAHA TT 600 2001
YAMAHA TT 600 2000
YAMAHA TT 600 1999
YAMAHA TT 600 1998
YAMAHA TT 600 1997
YAMAHA TT 600 1996
YAMAHA TT 600 1995
YAMAHA TT 600 1994
YAMAHA TT 600 1993
YAMAHA TT 600 1992
YAMAHA TT 600 1991
YAMAHA TT 600 1990
YAMAHA TT 600 1989
YAMAHA TT 600 1988
YAMAHA TT 600 1987
YAMAHA TT 600 1986
YAMAHA TT 600 1985
YAMAHA TT 600 RE 2004
YAMAHA XT 600 2002
YAMAHA XT 600 2001
YAMAHA XT 600 2000
YAMAHA XT 600 1999
YAMAHA XT 600 1998
YAMAHA XT 600 1997
YAMAHA XT 600 1996
YAMAHA XT 600 1995
YAMAHA XT 600 1994
YAMAHA XT 600 1993
YAMAHA XT 600 1992
YAMAHA XT 600 1991
YAMAHA XT 600 1990
YAMAHA XT 600 1989
YAMAHA XT 600 1988
YAMAHA XT 600 1987
YAMAHA XT 600 1986
YAMAHA XT 600 1985
YAMAHA XT 600 1984
YAMAHA YFM 600 GRIZZLY 4WD 2001
YAMAHA YFM 600 GRIZZLY 4WD 2000
YAMAHA YFM 600 GRIZZLY 4WD 1999
YAMAHA YFM 600 GRIZZLY 4WD 1998