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SpeedFun FURIOUS is an electronic and smart speed release device that needs no external power.
It is designed for use with ETR 3 motors, to circumvent the 25km/h speed limit and allow for an increase in its active assistance up to speeds of 50km/h by exploiting the motor’s power to the full.

Speedup FURIOUS can be mounted very simply by interposing it between the speed sensor and the motor using original connectors that do not alter the characteristics of electrical resistance and water tightness.

Once the Furious device is installed, the bicycle tachograph will show half speed and relative data making it possible, by simply multiplying in mind by two, the calculation of the actual speed and kilometers traveled.

Furious for ETR3 is available in only one version:
– Version On/off light: The device can be switched on and off conveniently from the LUCI control of the ebike display. With the device activated, the reading of the speed and of the distances on the display is halved thus obtaining the doubling of the real speed. With the device turned off (light off) everything returns as if the device was not installed.



– It can be assembled/disassembled at any time 

– It doesn’t need any destructive modification to the original parts of the bicycle 

– Allows you to reach speeds with active assistance even 50 kmH

– Installable in minutes, ready to use, plug and go!

– Suitable for all ETR 3 engines fitted in Cicli Bottecchia and other builders

– Activated and deactivated by the “lights” command of the ebike

– It does not need batteries or external power supply.