PROX Forged Piston for TM RACING EN 144, MX 144 2007-2015

PROX offers this piston kit for TM RACING EN 144, MX 144 2007-2015. 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 PROX?

ProX has its pistons made in Japan and the USA, with Japanese rings (Riken, TP or NPR) and tolerances at least equal to OEM; most of its four-stroke pistons are forged.

When should you replace the piston on your TM RACING EN 144?

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
• Specificity: Domed Piston
• Piston compression: Standard
• Piston type: Forged
• Stroke: 2T
• OEM style Tin coated pistons

Available in several sizes: choose the one that matches your cylinder (stamped size or measured bore). Diameters: A = 55.94 mm, C = 55.96 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

• 2-stroke oil : LIQUI MOLY 1 L 3065 · LIQUI MOLY 1 L 3063

Compatibility

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

Fits:
TM RACING EN 144 2015
TM RACING EN 144 2014
TM RACING EN 144 2013
TM RACING EN 144 2012
TM RACING EN 144 2011
TM RACING EN 144 2010
TM RACING EN 144 2009
TM RACING EN 144 2008
TM RACING EN 144 2007
TM RACING MX 144 2015
TM RACING MX 144 2014
TM RACING MX 144 2013
TM RACING MX 144 2012
TM RACING MX 144 2011
TM RACING MX 144 2010
TM RACING MX 144 2009
TM RACING MX 144 2008