CDI unit unrestricted Stage6 Derbi Euro 4

Stage6 unrestricted CDI unit for 50cc Euro 4 motorcycles, compatible with Derbi Senda X-Treme, Gilera SMT and Aprilia SX.

On some 50cc motorcycles, the stock CDI unit may cut the ignition at around 7,500 rpm. This is not a major problem with a completely original setup, but when you start fitting a Sport exhaust, Sport cylinder, or other performance parts, the engine may hit the limit just when it should still be continuing to gain revs.

The Stage6 unrestricted CDI unit removes this restriction, allowing the engine to make use of a wider RPM range and get better performance from the rest of the setup. The final improvement will always depend on the cylinder, exhaust, carburetor, and engine tuning fitted to the motorcycle.

It is also a good option if you simply want to derestrict a 50cc motorcycle while keeping the original engine or replace a damaged stock control unit.

What will you achieve?

• Remove the rev limit of the original CDI unit.
• Allow the engine to continue gaining RPM when the setup requires it.
• Make better use of a Sport / Racing exhaust.
• Combine it with a sports cylinder or a higher-performance cylinder.
• Prevent the original CDI unit from being the limiting factor for the rest of the setup.

Plug & Play installation

Installation is very simple: you only need to disconnect the original CDI unit and connect the Stage6 in its place. It does not require modifying the electrical system or carrying out special adaptations on compatible models.

Features

• Brand: Stage6.
• Product: CDI unit / ignition control unit.
• Type: unrestricted.
• Standard: Euro 4.
• Installation: Plug & Play.
• Application: 50cc motorcycles.
• OEM Derbi: CM287903.
• Especially recommended for setups with a Sport / Racing exhaust or cylinder.

Compatible models

APRILIA

• SX 50 Euro 4 2018-2020

DERBI

• Senda X-Treme 50 Euro 4 2018-2020

GILERA

• SMT 50 Euro 4 2018-2020

Important: after removing the RPM limit, it is advisable to check the carburetion and engine tuning. A different exhaust or cylinder may require changes to the main jet and other adjustments so that the engine runs correctly and does not run lean.

Note: depending on the model, installing this CDI unit may cause the tachometer integrated into the original instrument cluster to stop working.