Polini Tuning Kit - Vespa GTS 300


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Polini tuning kit for Vespa GTS/GTV 300cc maxi scooters. Included in the kit is piston, camshaft, valve springs & ECU module.

The new piston design increase compression ratio from 10.8:1 to 12.1:1. The camshaft has been designed with a new contour that increases the intake lift from 7.3 to 8.4mm while the exhaust lift increases from 6.9 to 8.1mm. All this helps to improve overall all power and higher rpm power. The kit also comes with valve springs to reduce valve flatter. The ECU module controls the increase in fuel flow the cylinder will require with the new parts.

*Piston diameter = 75mm.

Polini 140.0217

  • Vespa GTS 300
  • Piaggio MP3 300

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