PROX Casted Piston for SUZUKI RM 125 1987

PROX offers this piston kit for SUZUKI RM 125 1987. 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 cast piston?

A cast piston is made by pouring liquid aluminium into a mould: it is what most manufacturers fit as standard, especially on two-strokes.

• High-silicon alloy: it expands little, is fitted with tight clearance and stays quiet when cold.
• Good wear resistance of the skirt and ring grooves.
• Lower price than a forged piston, for OEM quality in normal use.
• Limit: less tolerant of overheating and highly tuned engines.

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 SUZUKI RM 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

• Material: Aluminium
• Specificity: Flat Crown / Reed Cutout / 2 Lubrication Holes on Exhaust Skirt
• Piston compression: Standard
• Oversize Letter: 050
• Stroke: 2T
• Manufacturer part number: 01.3205.050

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 · MOOSE
• Spark plug : NGK 4492 · NGK 3230
• 2-stroke oil : LIQUI MOLY 1 L · LIQUI MOLY 4 L
• Air filter : TECNIUM 0417 · TECNIUM 0406

Compatibility

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

Fits:
SUZUKI RM 125 1987