Vespa 50 Piston 3rd Over (39.0mm)

Vespa 50 Piston for Scooter Engines

This 39.0mm piston is made for Vespa 50 engines and helps keep the combustion chamber sealed. If you are noticing smoke, higher oil consumption, or weak compression, this piston may fix the problem. It is one of the Vespa scooter parts you can swap out yourself at home.

When to Replace It

Swap out the piston once the rings have worn enough to affect how the engine runs. Common warning signs are heavy smoke and oil being used up faster than normal. Getting the piston size to match your cylinder is key to running well.

Specifications

• Size: 39.0mm
• Position: Cylinder
• Fits: Vespa 50 (piston, 39.0mm bore, 3rd oversize)

Fitment

Compatible with:

• Vespa 50

How to choose: Confirm your cylinder has a 39.0mm bore, since this is a 3rd oversize piston.

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