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Unlock the speed limit of your electric bike with a Giant SpeedBox tuning dongle. Unleash the full speed of your ebike engine and ride it like a derestricted e-bike should be!

Compatible with all Giant ebikes such as Trance E+, Fathom E+, Stance E+, Reign E+, and any other Giant ebike with Giant Yamaha Syncdrive Sport, Pro, Life engines (2017-2021)


NOT COMPATIBLE with Giant SyncDrive Pro 2022 (Yamaha PW-X3)

We should have the 2022 tuning model in stock very very soon. Contact us for enquiries. 

The SpeedBox tuning fully unlock the speed limit of your ebike allowing for speeds up to +99 km/h. All data on the display remain correct: current speed, average and maximum speed, distance, and etc. The SpeedBox can be switched ON or OFF by just pressing the WALK button on the control unit.

The SpeedBox is manufactured with high quality certified automotive industry components. The tuning hardware is completely sealed and protected by a rigid casing which guarantee for toughness, impermeability, and thus hardware longevity. Each SpeedBox is tested several times during and after the manufacturing process. Thanks to these high quality standards the SpeedBox comes with a Lifelong warranty. 

The SpeedBox tuning chip comes with original plugs and colour-coded wires for an easy and perfect fit. Installation manuals and videos provide step by step detailed instructions and are easy to follow and understand. The SpeedBox does not require any diagnostic tool for installation. 

After installation, the tuning is activated by pressing the WALK button, a value of 9,9 km/h (6,2 mph) appears on the display for approx. 3 seconds. This signal confirms that the tuning is activated and that the engine is now fully derestricted for speed up to +99km/h (most likely you will run out of gears first).

The tuning is deactivated by pressing the WALK button, a value of 2.5 km/h (1,6 mph) appears on the display for approx. 3 second. Now, the tuning chip is deactivated and the engine support is reset to its original limitation of 25 km/h. 

Giant 2021: Activation takes place with WALK and then +

Instruction manual video
Download Manual
View the correct wire connection

NOTE:  If you are planning to install SpeedBox on a brand-new bike, make sure you ride it for at least 1 -2 km before installing the tuning.


The operation of modified electric bike on public roads may be against the law in some countries. The seller takes no responsibility for damages resulting from the use of tuning products. Electric bikes equipped with tuning products can be used exclusively on private property and entirely at one’s own risk. The use of tunings may void the warranty of your e-bike. We strongly recommend using safety features and protective gear to prevent injuries at higher speeds.







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