VERTEX Replica Forged Piston for YAMAHA TTR 125, BETA ALP 125, SCORPA TY-S 125 F and GAS GAS TX 125 4T RANDONNE 2000-201 - 23349

VERTEX offers this piston kit for YAMAHA TTR 125, XT 125, XT 125 X, BETA ALP 125, RR 125, RR 125 4T MOTARD, RR 125 4T MOTARD LC, URBAN 125, SCORPA TY 125, TY-S 125 F and GAS GAS TX 125 4T RANDONNE 2000-2016. 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 VERTEX?

Vertex has made its pistons in Italy since 1953 and has supplied KTM’s original pistons since 1996: molybdenum-disulphide coated skirt and Japanese rings. Its two-stroke pistons are cast from an 18 % silicon alloy. Its four-stroke pistons are forged from 2618 alloy.

When should you replace the piston?

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

• Material: Aluminium
• Piston compression: Standard
• Rings Quantity: Set
• Stroke: 4T

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 : CENTAURO · ATHENA
• Spark plug : NGK
• 4-stroke engine oil : LIQUI MOLY 10W40 1 L · MOTUL 10W50
• Air filter : TWIN AIR 152382 · TWIN AIR 158089

Compatibility

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

Fits:
BETA ALP 125 2012
BETA ALP 125 2011
BETA ALP 125 2010
BETA ALP 125 2009
BETA ALP 125 2008
BETA ALP 125 2007
BETA ALP 125 2006
BETA RR 125 2012
BETA RR 125 2011
BETA RR 125 2010
BETA RR 125 2009
BETA RR 125 2008
BETA RR 125 2007
BETA RR 125 2006
BETA RR 125 4T MOTARD 2012
BETA RR 125 4T MOTARD 2011
BETA RR 125 4T MOTARD 2010
BETA RR 125 4T MOTARD 2009
BETA RR 125 4T MOTARD 2008
BETA RR 125 4T MOTARD 2007
BETA RR 125 4T MOTARD 2006
BETA RR 125 4T MOTARD LC 2015
BETA RR 125 4T MOTARD LC 2014
BETA RR 125 4T MOTARD LC 2013
BETA RR 125 4T MOTARD LC 2012
BETA RR 125 4T MOTARD LC 2011
BETA RR 125 4T MOTARD LC 2010
BETA URBAN 125 2008
FANTIC CABALLERO 125 2008
FANTIC CABALLERO 125 2007
GAS GAS TX 125 4T RANDONNE 2014
GAS GAS TX 125 4T RANDONNE 2013
GAS GAS TX 125 4T RANDONNE 2012
GAS GAS TX 125 4T RANDONNE 2011
SCORPA TY 125 2015
SCORPA TY-S 125 F 2016
SCORPA TY-S 125 F 2015
SCORPA TY-S 125 F 2014
SCORPA TY-S 125 F 2013
SCORPA TY-S 125 F 2012
SCORPA TY-S 125 F 2011
SCORPA TY-S 125 F 2010
SCORPA TY-S 125 F 2009
SCORPA TY-S 125 F 2008
SCORPA TY-S 125 F 2007
SCORPA TY-S 125 F 2006
SHERCO XY 125 2016
SHERCO XY 125 2015
SHERCO XY 125 2014
YAMAHA TTR 125 2016
YAMAHA TTR 125 2015
YAMAHA TTR 125 2014
YAMAHA TTR 125 2013
YAMAHA TTR 125 2012
YAMAHA TTR 125 2011
YAMAHA TTR 125 2010
YAMAHA TTR 125 2009
YAMAHA TTR 125 2008
YAMAHA TTR 125 2007
YAMAHA TTR 125 2006
YAMAHA TTR 125 2005
YAMAHA TTR 125 2004
YAMAHA TTR 125 2003
YAMAHA TTR 125 2002
YAMAHA TTR 125 2001
YAMAHA TTR 125 2000
YAMAHA XT 125 2010
YAMAHA XT 125 2009
YAMAHA XT 125 2008
YAMAHA XT 125 2007
YAMAHA XT 125 2006
YAMAHA XT 125 2005
YAMAHA XT 125 X 2010
YAMAHA XT 125 X 2009
YAMAHA XT 125 X 2008
YAMAHA XT 125 X 2007
YAMAHA XT 125 X 2006
YAMAHA XT 125 X 2005