- New
Wössner Forged Piston for YAMAHA YFM 250 RAPTOR 2WD 2008-2013
€183.90
Tax Included
The piston moves up and down in the cylinder to turn combustion into motion: this kit replaces it along with its rings, pin and clips.
WOSSNER offers this piston kit for YAMAHA YFM 250 RAPTOR 2WD 2008-2013. 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 YFM 250 RAPTOR 2WD?
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 type: Forged
- Oversize Letter: A
- Rings Quantity: 3
- Forged piston
- Anti friction coated skirt
- Manufacturer part number: 8724DA
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
- 4-stroke engine oil : LIQUI MOLY 10W40 1 L · MOTUL 10W50
Compatibility
Check the exact model and year of your bike in the list below before ordering.
Fits:
YAMAHA YFM 250 RAPTOR 2WD 2013
YAMAHA YFM 250 RAPTOR 2WD 2012
YAMAHA YFM 250 RAPTOR 2WD 2011
YAMAHA YFM 250 RAPTOR 2WD 2010
YAMAHA YFM 250 RAPTOR 2WD 2009
YAMAHA YFM 250 RAPTOR 2WD 2008
8724DA
2 Items
Specific References
No customer reviews for the moment.
The piston moves up and down in the cylinder to turn combustion into motion: this kit replaces it along with its rings, pin and clips.
Wössner Forged Piston for YAMAHA YFM 250 RAPTOR 2WD 2008-2013
€183.90
Tax Included