Badass Box 4 for TQ

The Badass Box 4 lifts the 25 km/h speed limit of TQ E-Bike engines completely. Made in Germany.
SKU: badass-box-4-tq

Availability: In stock

Incl. 19% Tax
Product Description

Badass Box 4 for TQ

No 25 km/h speed limit anymore! The proven Badass Box is now also available in an optimized version 4 especially for E-Bikes with TQ mid-mounted engines (not compatible with Haibike Flyon). This tuning tool can be installed without much effort and removes the speed limitation completely. This allows the TQ drive to unleash its full power and you can ride much faster with full motor support.

A real advantage of this tuning tool is that the legal original state of the E-Bike can be restored within seconds. All you have to do is slide the spoke magnet to its original position and pull off the Badass Box - thanks to a patented snap lock and an included thumb screw, this is now easier than ever before. You don't even need tools for it.

Developed and manufactured in Germany.

How it works

Once the Badass Box 4 is plugged in, it transmits a modified signal so that the preset 25 km/h speed limit can be exceeded. This happens without direct intervention in the engine electronics or software (contactless E-Bike tuning).

Important note: Due to the specific functionality of the Badass Box 4, the display of your E-Bike will no longer show the correct speed when the box is plugged in (= tuning active). This also applies to values derived from it.

Therefore, we recommend GPS-enabled additional devices such as smartphones or bicycle computers to display the real speed when on the road.

Advantages over previous versions

  • Compared to the previous versions, the Badass Box 4 has been optimized in many ways - here are the most important innovations at a glance:
  • The housing of the Badass Box has been completely redesigned, and the O-ring of the previous version has been replaced by a patented snap lock. This makes it easier and quicker than ever before to attach and detach the box.
  • New battery: The CR2 battery has been replaced by a more powerful AAA battery. This battery only needs to be replaced about once a year or after about 7,000 km. Changing the battery is very easy and suitable replacement batteries can be found practically everywhere. The high range of up to 7000 km is made possible by the self-developed, patented field enhancement technology FEET ("Field Enhancement & Elimination Technology").
  • The Badass Box 4 has a much slimmer design, so there will be no more too narrow installation situations anymore.
  • At the customer's request, an additional, optional fastening option using cable ties on the snap lock is now possible, too.

Robust and durable

To ensure that the electronics of the Badass Box are optimally protected against moisture and mechanical stress, they are glued into the housing using a special casting compound and completely sealed (initially, the casting compound originates from the automotive industry). Before and after the casting, each individual box is tested to ensure that it functions correctly.

Badass Box 4 for TQ – Installation

Compared to other E-Bike tuning tools, the Badass Box 4 can be easily installed and uninstalled. A time-consuming opening of the engine is not necessary.

In principle, the Badass Box only needs to be attached to the speed sensor of the E-Bike. As soon as the snap lock engages, you know that the box is securely fastened. Optionally, an additional fastening with cable ties is also possible.

Note on initial assembly: For the very first assembly, the spoke magnet screw should be replaced with the supplied thumb screw. This has the advantage that the spoke magnet can be moved without any tools in the future. After placing the Badass Box on the sensor, the spoke magnet must be moved towards the edge of the housing in the direction of the snap lock. When the magnet touches the Badass Box, it must be placed as close as possible to the box and rotated by 90 degrees. This completes the installation and the Badass Box is active - your E-Bike is tuned and you can start!

If you want to cancel the tuning and return the bike to its road-legal original condition, you just have to remove the Badass Box and put the spoke magnet back to its original position. Thanks to the included thumb screw this can be done in a few seconds.

Badass Box 4 for TQ – Technical data

  • Dimensions: 61 x 40 x 15 mm
  • Weight: 27g (with battery 37g)
  • Battery: 1.5V AAA battery (IEC R03)

Badass Box 4 for TQ – Compatibility

This tuning tool is compatible with E-Bikes with TQ mid-mounted engines. Not compatible with Haibike Flyon E-Bikes.

Scope of delivery

  • Badass Box 4 for TQ E-Bike engines
  • AAA battery
  • Thumb screw


Additional Information
Additional Information
Manufacturer Badass Box
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