- New
WOSSNER piston kit for KTM EXC 250, MXC 250, SX 250 from 1996 to 1999
€164.90
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 KTM EXC 250, MXC 250, SX 250 from 1996 to 1999. 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 KTM EXC 250?
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 20 h in hard use and every 40 h for leisure.
Specifications and fitting tips
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 : NGK 6664 · NGK 3520
- 2-stroke oil : LIQUI MOLY 1 L 3065 · LIQUI MOLY 1 L 3063
- Air filter : TECNIUM 0809 · TECNIUM 0813
Compatibility
Check the exact model and year of your bike in the list below before ordering.
Fits:
KTM EXC 250 1999
KTM EXC 250 1998
KTM EXC 250 1997
KTM EXC 250 1996
KTM MXC 250 1999
KTM MXC 250 1998
KTM MXC 250 1997
KTM MXC 250 1996
KTM SX 250 1999
KTM SX 250 1998
KTM SX 250 1997
KTM SX 250 1996
8016DA
4 Items
Specific References
Click on your bike to see all compatible parts.
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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 piston kit for KTM EXC 250, MXC 250, SX 250 from 1996 to 1999
€164.90
Tax Included