This is an unrestricted, high revving, full power ECU with the option of being supplied with or without the unrestricted large smooth bore inlet manifold and or throttle body mechanism which will replace the standard 50cc E4 restricted Rojo ECU.

Note: The replacement (optional) unrestricted large bore inlet manifold is required for the purpose of the derestriction to work or in some Zhenhua Dax 50 cases an unrestricted connection pipe between the throttle body and inlet manifold is required which is listed separately as an option. 

This ECU has had the E4 (EU) power and speed restriction removed and is sports mapped allowing the engine to achieve its full power, revving and speed potential and is supplied with or without its throttle body mechanism and unrestricted large smooth bore manifold.

Very Important: There are two types of ECU to match the two versions of fuel pump which are mounted near the engine (the location of the fuel dump varies with each manufacturer) identifying your type of fuel pump is very simple by matching your type of fuel pump with the fuel pump images shown in this advertisement and by selecting the ECU which matches your fuel pump type from the drop down menu (Rotor type fuel pump or Magnetic type fuel pump).

The following E4 Dax copy Motorcycles where fitted with the restricted Rojo fuel injection and ECU:

• Triton Manix 50cc
• Bullit Heritage 50cc
• All Skyteam 50cc models: Skyteam Skymax, Skymini, Skybongo, T-Rex  
• All Zhenhua Motorcycles 50cc (in some Zhenhua Dax 50 cases an unrestricted connection or coupling pipe between the throttle body and inlet manifold is required which is listed separately as an option).
• Lexmoto FMX 50 (GY6 rotor fuel pump mounted in the fuel tank) 

Important: Please check your existing ECU against the images provided before placing your order and only order if you are sure this part is needed as we do not operate a try and buy service. 

Important: Fitting this ECU will increase your motorcycle performance and its legal conformity for road use and should therefore only be used for off road purposes such as a track event, we do not endorse or encorage the fitting or use of any performance or conformity tampering products for legal road use purposes.