Open CDI replacement for Euro 4 Derbi 50cc motorcycles, including models such as the Derbi Senda X-Treme, Aprilia SX50 and Gilera SMT.

The factory CDI on many 50cc vehicles is restricted to meet Euro 4 emissions requirements, which can limit engine power and top speed. An open CDI removes the CDI restriction. On Euro 4 models, other restrictions may also need to be addressed. Check local regulations before making changes.

Replace the CDI when fitting a sports or racing cylinder or exhaust.

Installation is plug and play:  disconnect the original CDI and connect the replacement unit.

Compatible applications include Derbi Senda X-Treme, Gilera SMT and Aprilia SX.

Derbi OEM part number : CM287903.

Before ordering, compare your existing CDI connector with the product photo to confirm the fit.