SpeedFun RIBELLE for Giant Syncdrive Life, Sport and Pro

147,62VAT incl.

SpeedFun RIBELLE is an electronic and smart speed release device that needs no external power.

It is designed for use with Giant Syncdrive Life-Sport-Pro 2017-18-19-20 motors, to circumvent the 25km/h speed limit and allow for an increase in its active assistance up to speeds that can exceed 60km/h by exploiting the motor’s power to the full.

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What is SpeedFun REBEL?

SpeedFun RIBELLE is an electronic and smart speed unlocking device that does not require any external power supply.

It is designed for Giant Syncdrive Life-Sport-Pro 2017-18-19-20 engines to circumvent the speed block at 25 kmH allowing you to increase its active assistance up to speeds that can exceed 60 KmH (info) taking full advantage the potential of the Giant engine.

SpeedFun RIBELLE is not compatible with Giant 2021 ebike. For the device compatible with Giant 2021 ebike click here.

SpeedFun RIBELLE shows all real data on models with Ridecontrol EVO display. On models with side control Multi Switch shows the correct speed data if you connect your smartphone (Giant Ride control App).

SpeedFun RIBELLE is equipped with a self-learning system to memorize all the parameters of the ebike on which it is mounted. Therefore no setting is necessary. Just a short opening sequence and then you can only think about having fun!

Speedup RIBELLE can be mounted very simply by interposing it between the speed sensor and the motor and between the displays and the motor using original connectors that do not alter the electrical resistance and watertight characteristics.

The operating system for avoiding the number of revolutions of the rear wheel of the Ribelle comes into operation only when the 16 kmH is reached, progressively reducing with a particular algorithm the communication of the wheel revolutions to the engine without the cyclist noticing any difference in assistance. It does not intervene in any way at low speeds. This is an important precaution designed not to change the engine intervention parameters when restarting and on important climbs, (which are the critical and most delicate moments for an engine) thus leaving the parameters studied and optimized by the manufacturer intact, and thus avoiding power losses, failures or “hiccup” operations which instead occur with release systems from other manufacturers.

SpeedFun RIBELLE can be activated and deactivated with a key sequence (see here). Feedback is shown on the display, if any, whenever the on or off status is changed.

RIBELLE allows the setting of the wheel circumference from 20 “for a precise calculation of speed and mileage even if you have to replace the tire with one of a different section from the original. Normally this possibility is not offered by the original Giant system.

It is important to check the ebike version to avoid device incompatibility problems. Click here to check if your ebike is 2019 or 2020.



The main features


– Does not alter speeds and distances on models with Ridecontrol EVO display. On models with side control Multi Switch shows the correct speed data if you connect your smartphone (Giant Ride control App).

– It can be assembled and disassembled at any time

– It does not require any destructive modification to the original parts of the bicycle

– Allows to reach speeds with assistance activated even over 50 kmH (info)

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

– Suitable for Giant Syncdrive Life-Sport-Pro 2017-18-19-20 engines

– Activated and deactivated by pressing a sequence of keys  (see here)

– Self-learns the parameters of the ebike, stores and maintains the desired settings.

– Internal firmware upgradeable to any new algorithms developed by the SpeedFun team. (It is necessary to send the device)



Video Assembly Instructions

How to install SpeedFun Ribelle tuning speed release kit for Giant Syncdrive Pro

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Once the SpeedFun speed release device has been installed, the electric bicycle, if exceeding the limit of 25 kmH, is equated to a moped and as such, if traveling in public places, it needs to be homologated-registered by the Civil Motorization. subject to the payment of the road tax and insurance coverage, must have a license plate, cannot circulate on cycle paths and the driver is obliged to drive with a license and must use a helmet. In addition, driving a motor bicycle equivalent to a moped that does not comply with the aforementioned provisions entails the administrative seizure of the vehicle and financial penalties that vary according to the infringement committed. The manufacturer of the speed release system declines all responsibility for any damage caused to pedal-assisted bicycles on which the device is mounted as well as direct or indirect damage to people or things.
SpeedFun – Phase B snc declines any responsibility for any anomalies caused by the anti-tuning defenses that the engine manufacturers could activate.
Remember that the modification to the bicycle could invalidate the manufacturer’s warranty.

The operation of the SpeedFun devices is guaranteed for the software versions of the ebikes released up to the date of purchase of the device itself.
If the ebike is subsequently updated with software for which the SpeedFun device has not been designed, its failure may occur.
Before updating your engine, it is necessary to check the compatibility with your SpeedFun device.

NB: All the brands mentioned on this site are named exclusively to identify the models of engines and bicycles on which our devices are compatible. They are the property of the respective owners and are in no way related to our company.

Use your helmet, save your life!