Polini ECU/ ECM & Valve Springs for Piaggio/ Vespa 50cc Euro5 mopeds produced 2021-24.

Advanced Polini ECM with integrated valve springs for Vespa 50 4T iGET, Liberty 50 4T iGET, and Piaggio ZIP 50 4T iGET Euro 5 (2021–2024). Designed and tested by the Polini Racing Department, this unit allows full tuning flexibility, improving engine RPM, top speed, and performance while maintaining plug & play installation for standard setups.

Key Features:
– Programmable ECM with valve springs included
– Increases engine RPM limiter up to 10,000 rpm
– Enables four performance maps for progressive upgrades
– Optimises throttle response, acceleration, and overall ride dynamics
– Italian-made, high-quality racing development

Performance Maps:

• Map 1: Plug & play; raises RPM limiter from 7,500 to 8,100. Recommended with Polini variator 241.765 and Polini muffler 190.0079. Odometer speed rises from ~45 km/h to 50–53 km/h.

• Map 2: Requires replacement of original valve springs with Polini springs; raises RPM limiter to 10,000. Recommended with Polini variator, Polini muffler and improved filter box coupling (223.0131). Odometer speed rises to 56–60 km/h. Professional installation advised.

• Map 3 (Vespa & Liberty 50): Maximum performance; requires 49mm cylinder kit 140.0223 and Polini long gears 202.1424. Recommended with Polini variator, Polini muffler, and improved filter box coupling.

• Map 4 (ZIP 50): Maximum performance; requires 49mm cylinder kit 140.0223 and Polini long gears 202.1429. Recommended with Polini variator and Polini muffler. Achieves top speeds of 70–75 km/h.

Please note: when fitting the ECU on Vespa Euro5 models produced from 2024 with a digital TFT display, many functions of the display are disabled, this does not effect the engine functioning.

For 2025 models with the TFT display you will need this one here.

Polini 171.0020