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Piaggio Liberty, Skipper ST125 125cc Immobilizer Chip Key Bypass CDI

Piaggio Liberty, Skipper ST125 125cc Immobilizer Chip Key Bypass CDI

Regular price £59.95 GBP
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Immobilizer Bypass CDI for Piaggio Scooters.

Deactivates and Removes the immobilizer from older Piaggio Scooters (2000 – 2009)

Any key that fits the lock can start the scooter.

UK Stock, Warranty, Fast shipping on all Orders. International orders welcome.

International Shipping available at checkout.


Simple Plug and Play replacement CDI that removes the Immobilizer from older Piaggio Scooters.
After you install this CDI on your Piaggio scooter, the immobiliser will be completely deactivated.

Fits the Air-cooled models, such as the Piaggio Liberty 125cc and Skipper ST125.

Also fits a number of Vespa models.

Only suitable for the older Carburettor Models, Circa 2000 to 2008.

Very useful if you have lost your keys or the original immobilizer CDI has failed.


  • Piaggio Liberty 125cc 150cc (2000 onwards)
  • Piaggio Skipper ST125 (2000 onwards
  • Vespa ET4 125cc / 150cc (2000 – 2006)
  • Vespa LX125 / LX150 (2005 – 2009)
  • Vespa LXV125 / LXV150 (2008 – 2009)
  • Vespa S 125 (2007)

Replaces the following CDI Part Numbers:

Magneti Marelli:

ACI600, ACI600.01, ACI600.02, ACI600.03
ACI601 , ACI601.01, ACI601.02, ACI601.03,
ACI603, ACI603.01, ACI603.02, ACI603.03
ACI604, ACI604.01, ACI604.02, ACI604.03


EFI Technology AC1i, AC2i, AC5i, AC8i, 584612

Not suitable for the pre-LEADER engines. (1996 – 2000)

NOTE: This CDI will bypass your immobilizer. Once fitted the scooter will no longer have an immobilizer.

Any key that can turn the ignition barrel will start the scooter!


Remove the original Piaggio Liberty 125cc CDI and bolt this bypass CDI onto the same mountings.

Plug in the 8 Pin Connector into this replacement CDI.

Leave the smaller 3 pin connector disconnected.

Start the engine!

Piaggio Liberty 125cc Immobilizer Chip Key Bypass CDI

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