- New
ATHENA Forged Piston for YAMAHA DT 125 1988-2007
€129.90
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.
ATHENA offers this piston kit for YAMAHA DT 125 1988-2007. 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 ATHENA?
Athena, the Italian manufacturer founded in 1973, is an original-equipment supplier to manufacturers such as KTM and Ducati: the same standards for your replacement parts.
When should you replace the piston on your YAMAHA DT 125?
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
- Engine: 2-stroke
- Size : 57 mm
- Manufacturer part number: S4F057000010
Spare parts and items to plan
- Piston rings : WOSSNER · TECNIUM
- Piston pin : WOSSNER
- Top-end gasket kit : ATHENA P400485160005 · ATHENA S410485006018
- Small end needle bearing : PROX
- Spark plug : NGK 3981 · NGK 2411
- Coolant : LIQUI MOLY 1 L · TWIN AIR
- 2-stroke oil : LIQUI MOLY 1 L · LIQUI MOLY 4 L
Compatibility
Check the exact model and year of your bike in the list below before ordering.
Fits:
YAMAHA DT 125 2007
YAMAHA DT 125 2006
YAMAHA DT 125 2005
YAMAHA DT 125 2004
YAMAHA DT 125 2003
YAMAHA DT 125 2002
YAMAHA DT 125 2001
YAMAHA DT 125 2000
YAMAHA DT 125 1999
YAMAHA DT 125 1998
YAMAHA DT 125 1997
YAMAHA DT 125 1996
YAMAHA DT 125 1995
YAMAHA DT 125 1994
YAMAHA DT 125 1993
YAMAHA DT 125 1992
YAMAHA DT 125 1991
YAMAHA DT 125 1990
YAMAHA DT 125 1989
YAMAHA DT 125 1988
S4F057000010
Specific References
Click on your bike to see all compatible parts.
- YAMAHA DT 125 1988
- YAMAHA DT 125 1989
- YAMAHA DT 125 1990
- YAMAHA DT 125 1991
- YAMAHA DT 125 1992
- YAMAHA DT 125 1993
- YAMAHA DT 125 1994
- YAMAHA DT 125 1995
- YAMAHA DT 125 1996
- YAMAHA DT 125 1997
- YAMAHA DT 125 1998
- YAMAHA DT 125 1999
- YAMAHA DT 125 2000
- YAMAHA DT 125 2001
- YAMAHA DT 125 2002
- YAMAHA DT 125 2003
- YAMAHA DT 125 2004
- YAMAHA DT 125 2005
- YAMAHA DT 125 2006
- YAMAHA DT 125 2007
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.
ATHENA Forged Piston for YAMAHA DT 125 1988-2007
€129.90
Tax Included