Quattrini M1*172 Piston (Replacement Piston) for PX, Stella

Replacement Piston for PX and Stella Scooters

The Quattrini M1*172 piston is built for PX and Stella scooters. This replacement piston assembly plays a key role in keeping the engine running well. It falls under vintage Vespa scooter parts and can noticeably improve engine sealing and efficiency. To get a correct fit, match the piston diameter and pin size to your cylinder.

Signs It Needs Replacing

Consider swapping out this piston if you see signs such as heavy smoke, rising oil use, or weak compression. Worn piston rings are a common cause of these problems and can reduce overall engine performance.

Specifications

• Size: Standard
• Position: Engine
• Fits: Quattrini M1*172 piston for PX and Stella engines (Quattrini kit)
• OEM Part Number: M1*172

Compatibility

Compatible with:

• PX (Quattrini kit)
• Stella (Quattrini kit)

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