BadassBox 4 for all Shimano motors up to 2022

Derestrict your e-bike for a new (30mph 50km/h) speed limit!


2 reviews

Tuning kit is Compatible with ALL SHIMANO MOTORS UP TO 2021

Regular price$159.00

& Free Delivery in the UK and EU


Product Features

Compatible with all Shimano motors with the regular speed sensor (photo below) ! Supports mechanical and electronic gearshifts (Di2)! Excepts Nexus Di2 hub gearsThe tuning kit compatible with the latest Shimano firmware. 

The contactless and wireless BadassBox transmits a modified signal in order to override the speed limit of your eBike – without interfering with the motor's electronic circuitry or software. There's no need to open the motor and there is no risk of damaging it. 

The BadassBox can be fitted in seconds – and just as quickly removed, restoring your eBike to its former road-legal condition. With the new snap-lock fastening you can attach and remove your BadassBox with just one hand in seconds. Badassbox has an optional securing feature on the snap lock using a cable tie.

From now on you will be able to ride at a speed up more than 30mph (50kmh)! The BadassBox is attached to the speed sensor of the eBike and overrides the 16 mph (25kmh) speed limit. Remove it and your eBike is restored to its original state.

Badassbox is used with a AAA battery. Tool-free battery change can be carried out quickly and easily while you're on the road – but should only be necessary once a year, or every 7000km. 

To protect against moisture and mechanical stress, the electronics are glued into the casing and completely sealed with a special casting compound.

After the dongle is installed, your eBike display will not show real data. For this reason we recommend using other GPS-related accessories for more precise data acquisition of driving data.

Please, be aware that the tuning kit does not add extra power to your eBike motor. it only removes speed limits and enables you to reach 30mph (50kmh) if you would pedal enough.

Shimano diagnostic is not able to find if you were using BadassBox or not. Also, please be aware that all the tuning kits are carefully tested before sending it out to You. 

What is included - BadassBox 4 Shimano 2019 with AAA battery and spoke magnet with thumb screw.

Will BadassBox 4 Shimano work with my eBike? 

This tuning kit is compatible with all Shimano eBikes with the regular speed sensor (showed below). It is working even with the latest Shimano 2021 eBikes if they have this speed sensor.

This tuning kit version supports mechanical and electronic gearshifts (Di2)! Excepts Nexus Di2 hub gears.

The tuning kit compatible with latest Shimano firmware. 

Attention, only the sensor on the left is compatible. Please contact us if you have the other sensor.


The BadassBox 4 Shimano is fitted over the Shimano speed sensor next to the rear wheel. When the snap-lock clicks into position, the BadassBox is fitted securely to the sensor.

 For extra secure fitting, the BadassBox can also be fastened with a cable binder.

When the BadassBox is first fitted, the spoke magnet that comes with it must be mounted in place of the original magnet. Without the BadassBox, our spoke magnet functions identically to the original magnet, but when the BadassBox is fitted, the spoke magnet is necessary for our patented field enhancement technology to work properly. Once the BadassBox has been fitted onto the sensor, the spoke magnet must be offset to the casing edge in the direction of the snap-lock clasp. It's now ready for use.

Following removal of the BadassBox, the spoke magnet must be returned to its original position.

If you have any troubles with installation or disassembly, do not hesitate to contact us.

If You are planning to install BadassBox on brand-new eBike, make sure you ride it for at least 0.6miles (1km) before the Tuning Kit is installed


Please note that the operation of this type of modified electric bikes on public roads may be against the law in some countries. The manufacturer takes no responsibility for damages resulting from the use of BadassBox products. Electric bikes equipped with BadassBox products are not allowed to be used on public roads, cycling paths and public places. Electric bikes equipped with BadassBox products can be used exclusively on private property and entirely at one’s own risk. The use of BadassBox may void the warranty of your eBike.

We strongly recommend using other safety features and protective gear to prevent injuries at higher speeds.

Product details

  • Product Dimensions : 2.4 x 1.69 x 0.59 in (61 x 43 x 15 mm); 
  • Product Weight with the battery: 1.3 oz (37gr);
  • Battery: 1.5V AAA battery (IEC R03);
  • Department : Unisex;
  • Warranty: 2 years;
  • Manufacturer : Badass eBikes;

Full shipping details can be found here

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Easy to install.

Safe for your e-bike.


Unlock the full potential of your ebike!

  • You will ride faster and experience the thrills of owning a derestricted ebike -you will love the difference!
  • Install it effortlessly- easy and fast installation!.
  •  Feel safe for your e-bike and warranty- it's safe for ebike and undetectable to keep your warranty safe!

Quick plug-and-play installation. No setup!

  • Increase the speed limiter from original 16 mph (25km/h) to a new (30mph 50km/h) speed limit!
  • Fully undetectable!
  • Get after-sales support from us!

The bike feels completely different once derestricted - it's just like a whole different bike! The rides are so much more fun now! Tuning kits are safe to your bike and every ebiker should have one installed! You will love riding your ebike with it - guaranteed!

Matt - Owner of Two Wheels Empire

How to install and use it?

Tuning kit is Compatible with ALL SHIMANO MOTORS UP TO 2021

Customer Reviews