Malossi, Piston (12mm Wrist Pin, 1 Ring) for Scooters & Mopeds

Malossi Piston for Piaggio and Minarelli Scooters

This Malossi piston has a 12mm wrist pin and a single-ring layout, built for a range of scooter models. It fits Piaggio and Minarelli MHR cylinders. You can find it among our scooter pistons and piston rings, useful for repairs or upgrades where reliability matters.

Construction and Compatibility

This piston is intended for aluminum cylinder heads on 70cc models, whether air-cooled or water-cooled. The build is meant to give an accurate fit and support smooth engine operation. It suits anyone wanting to keep up or improve how their scooter runs.

Installation Considerations

Swapping a piston is a routine job for many scooter owners. If the piston shows wear or damage, replacing it helps keep the engine running efficiently. Check your local regulations first, since this part is not permitted on pollution-controlled vehicles.

Specifications

• Material: Aluminum
• Wrist Pin Diameter: 12 mm
• Ring Count: 1
• OEM Part Number: 348654A0
• Fits: Scooter 50 Piaggio and Minarelli MHR engines with 70ccm Malossi cylinder

Fitment

Compatible with:

• Scooter 50 Piaggio, Minarelli MHR (70ccm Malossi Aluzylinder with 12er bolts)
• Scooter 70ccm MHR Minarelli air-cooled and water-cooled
• Scooter 70ccm MHR Piaggio air-cooled and water-cooled
• Scooter 70ccm MHR TEAM ALU Minarelli water-cooled
• Scooter 70ccm MHR TEAM aluminum Piaggio water-cooled

How to choose: Make sure the piston matches your cylinder. This is a trapezoidal 1.0 mm ring piston for 70ccm MHR cylinders, with a 12 mm wrist pin.

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