Immobiliser Chip Key Bypass CDI fits Vespa Piaggio ET4 125 125cc LEADER ACI603

Replaces the Magneti Marelli ACI600, ACI601, ACI602, ACI603 and ACI604. Once fitted you will no longer require a key with a built in chip. Suitable for air cooled Vespa ET4, LX, LXV and S LEADER engine models,approx 2000 to 2006.