BadassBox 4 for Bosch 2014-2022 motors

Derestrict your e-bike for a new 31mph (50km/h) speed limit!

Compatible with all ebike Bosch Motors that have a specific sensor on the chainstay! Please refer to the picture here. A good indication that your sensor is on the chain stay is the presence of a spoke magnet. In addition, the sensor is usually direct and easily visible.

Regular price£133.00
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&Free Delivery Worldwide

You can save money when buying more than one tuning kit. Can be combined with other brand/type tuning kits!
Buy 2 save 3%
£133.00 £129.01
Buy 3 save 7%
£133.00 £123.69

GO FROM CAPTAIN SLOW OF YOUR CYCLING GROUP TO JIMMY JET!

- TOM E.

#1 SELLER
2 YEARS WARRANTY
PREMIUM CUSTOMER SUPPORT
FREE SHIPPING WORLDWIDE
EASY TO INSTALL
UNDETECTABLE

Compatible with all ebike Bosch Motors

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 31mph (50km/h) speed limit!
  • Fully undetectable! After BadassBox removal there is no way to tell if it has been used on your e-bike!
  • Get after-sales support from us and a two year warranty from BadassBox!

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

Frequently Asked Questions

The BadassBox is attached to the speed sensor of the e-bike and overrides the 16mph (25 km/h) speed limit - you can expect to reach speeds of up to 31mph (50km/h), depending on the bike and gearing. Your displayed speed will be 2 times slower than your real speed. We recommend the use of GPS-related accessories for a more precise data acquisition of driving data (smartphone, bike computer, etc.).

The contactless and wireless badassBox transmits a modified speed signal in order to override the speed limit of your e-bike – 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 or removed in seconds.

If this sensor of your Bosch motor - as shown in the picture below - is located on the chain stay of your bike, then the badassBox4 Bosch is exactly what you need.


New slim casing with patented snap-lock fastening for even faster mounting and release. Even more robust thanks to a special potting compound from the automotive industry. New electronics for even greater range with a single AAA battery. A quality product designed, engineered and manufactured in Germany.

The delivery includes the following parts:
- one badassBox 4 Bosch
- one badassBox 4 housing cover
- one AAA battery
- one spoke magnet with thumb screw

The BadassBox 4 Bosch is fitted over the Bosch 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 zip tie.

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.

Installation Guide:

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 Badass Box products. Electric bikes equipped with Badass Box products are not allowed to be used on public roads, cycling paths and public places. Electric bikes equipped with Badass Box products can be used exclusively on private property and entirely at one’s own risk. The use of Badass Box products may void the warranty of your ebike.

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

Badass Box products are thoroughly tested and we stand by their quality - Badass Box provides 2 years warranty to all their products.

What Our Clients Say About It?

Who Are We?

From Riders to Riders

In Two Wheels Empire, we trust in innovation, premium quality and sustainability - that's what our business is about. Feel assured all our ebike products are carefully selected and we stand by them: if it's on offer here at Two Wheels Empire - it's been tested and selected by our team. Riders working with us are here to help you enjoy your ebike rides!

We are here to build an Empire, of people who strive for freedom, thrills and adventure, it's about time to make the best of your rides!