Wössner Forged Piston for HUSABERG FC 550, FE 550, FE 550 S, FE 650, FS 650 2001-2008

WOSSNER offers this piston kit for HUSABERG FC 550, FE 550, FE 550 S, FE 650, FS 650 2001-2008. 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 HUSABERG FE 650?

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 30 h in hard use and every 60 h for leisure.

Specifications and fitting tips

• Material: Aluminium
• Piston type: Forged
• Rings Quantity: 2
• Stroke: 4T
• Forged piston
• Anti friction coated skirt

Available in several sizes: choose the one that matches your cylinder (stamped size or measured bore). Diameters: A = 99.95 mm, B = 99.96 mm.

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 : see the selection
• Spark plug : NGK
• 4-stroke engine oil : LIQUI MOLY 10W40 1 L · MOTUL 10W50
• Air filter : PROX

Compatibility

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

Fits:
HUSABERG FC 550 2005
HUSABERG FC 550 2004
HUSABERG FC 550 2003
HUSABERG FC 550 2002
HUSABERG FC 550 2001
HUSABERG FE 550 2008
HUSABERG FE 550 2007
HUSABERG FE 550 2006
HUSABERG FE 550 2005
HUSABERG FE 550 2004
HUSABERG FE 550 S 2005
HUSABERG FE 650 2008
HUSABERG FE 650 2007
HUSABERG FE 650 2006
HUSABERG FE 650 2005
HUSABERG FE 650 2004
HUSABERG FE 650 2003
HUSABERG FE 650 2002
HUSABERG FE 650 2001
HUSABERG FS 550 2007
HUSABERG FS 650 2008
HUSABERG FS 650 2007
HUSABERG FS 650 2006
HUSABERG FS 650 2005
HUSABERG FS 650 2004
HUSABERG FS 650 2003
HUSABERG FS 650 2002
HUSABERG FS 650 2001
HUSABERG FS 650 S 2004