Badass Box 4 (G4-Set) for Bosch
TYPE: Bosch Gen4, Bosch Gen3, Bosch Gen2
VENDOR: Badass Box
You Save: 15,00 € (10%)
Badass Box 4 for Bosch G4 Set
A tuning set especially for Trek e-bikes with Bosch mid-motors and G4 speed sensor integrated in the dropout. The set contains the Badass Box 4 and all parts necessary for installation.
The Badass Box 4 is a proven tuning tool that completely removes the 25 km/h speed limit of Bosch e-bike motors. This allows you to use the full potential of your Bosch drive and ride much faster with full motor support. This is so-called contactless tuning - i.e. there is no electrical connection to the motor, so there is no risk of damage to the drive.
The tuning works by the Badass Box 4 transmitting a modified signal to the motor after installation and plugging in. This overrides or removes the preset 25 km/h limit - and you can ride much faster with full motor support.
Important note: Due to this functional principle, the e-bike display will show a wrong speed when tuning is active (=box is plugged in), which also applies to values derived from it. We recommend using GPS-based additional devices such as smartphones to determine the real speed and correct distance. You can attach these directly to the handlebars of your e-bike. You can find suitable mounts "here".
If necessary, the tuning tool can be removed at any time and the e-bike returned to its (legal) original condition.
The Badass Box 4 is powered by an AAA battery with a long range (included in delivery). Suitable replacement batteries can be found inexpensively almost everywhere in the trade. They can be replaced at any time without any problems, and you don't even need any tools. It is recommended to replace the battery once a year at the start of the season.
Tuning can be switched on and off
After installation or wiring, you can switch the tuning on and off at any time by plugging or unplugging the box and moving the spoke magnet. Thanks to a patented snap lock and the supplied spoke magnet with lobe screw, this is now even quicker and easier than ever before.
Please note that the installation of the Badass Box requires a small modification - so a little manual work is needed here. Therefore, please read the installation instructions below before ordering the Badass Box 4 for Bosch G4 set.
BadassBox 4 for Bosch - The most important information at a glance:
-25 km/h speed limit of Bosch motors is completely removed.
-Contactless e-bike tuning.
-Patented snap lock allows the box to be plugged in and unplugged within a few seconds.
-Badass box attached & spoke magnet moved: Tuning activated - the 25 km/h limit of the motor support is lifted.
-Badass box unplugged and spoke magnet moved back to original position: Tuning cancelled, motor support then stops again, as usual, at 25 km/h.
-Replaceable 1.5V AAA battery (IEC R03) with long range, partly due to patented field amplification technology.
-Thanks to potting compound from the automotive industry, the Badass Box 4 is very robust and well protected against moisture.
-Double quality control (before and after potting).
-Dimensions: 61 x 43 x 15 mm
-Weight: Badass Box 27g (with battery 37g)
-Developed and manufactured in Germany.
Installation instructions
You will find the integrated G4 speed sensor in the area of the dropout of your e-bike. To access the sensor, the rear wheel must be removed:
In the scope of delivery you will find a lens flange screw with which you can screw the G4 speed sensor to the G4 adapter (you will need a 2.5 mm hexagonal spanner / Allen key):
Optionally, a suitably cut pad made of self-adhesive elastic foam is enclosed. You can stick this pad to the G4 adapter so that you can attach it to the swingarm without risk of scratches:
Now you have to fix the G4 adapter incl. the screwed-on G4 speed sensor with the help of the enclosed cable tie at a suitable place on the swingarm where it is possible to slide the Badass Box onto the adapter.
Now you have to reinstall the rear wheel and push the Badass Box onto the adapter until it clicks into place:
Now all you have to do is mount the spoke magnet and align it with the edge of the Badass Box housing - that's it, your e-bike is tuned!
Badass Box 4 for Bosch G4 set - Compatibility
Trek e-bikes with any of the following Bosch mid-mounted motors:
Active Line, Performance Line, CX Line & Active Line Plus.
Also compatible with 4th generation Bosch e-bike mid-motors (2020/2021 vintage).
Not compatible with Bosch Smart System 2022!
Important note:
This Badass Box 4 is only compatible with the G4 Speed Sensor in the dropout shown here:
If the sensor integrated in the dropout has the shape of the second sensor, you will need the "Badass Box 4 Bosch X-Set":
If the Bosch sensor (the second one) of your e-bike is easily accessible on the chain stay and has the shape of the second sensor, you only need the usual "Badass Box 4 for Bosch e-bike motors".
Badass Box 4 for Bosch G4 Set - Scope of delivery
1x Badass Box 4 for Bosch
1x Badass Box 4 housing cover
1x spoke magnet with lobe screw
1x G4 adapter
1x lens flange screw [M3 x 8 (ISO 7380-2)]
1x Elastic foam pad
4x cable tie
Delivery time, Shipping costs, Minimum order value und Payment methods:
Delivery time
Delivery time is 1-8 business days within Germany. Postal delivery time outside Germany may take longer.
Shipping area
We ship to Belgium, Bulgaria, Denmark, Estonia, Finland, Germany, Greece, Ireland, Iceland, Italy, Croatia, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Austria, Poland, Portugal, Romania, Sweden, Slovakia, Slovenia, Spain, Czech Republic, Hungary, Cyprus.
For shipping to Germany please use our german shop.
For a solution to Switzerland and Liechtenstein please see here.
We do not ship to the USA, France, Canada (including all overseas territories) and generally outside the EU.
Shipping costs
The shipping costs for Germany are 3,50 Euro. The shipping costs are waived from an order value of 180 Euro. For countries within the EU the shipping costs are 9,90 Euro. The shipping costs are waived from an order value of 300 Euro. We ask you to cover the cost of any return shipment yourself. Please note that customs fees may apply in third countries outside the European Union.
Minimum order value
The minimum order value is 25 Euro. Only from this amount you can use prepayment or PayPal and bank transfer as payment methods.
Maximum order value
The maximum order value for orders outside the EU is 1.000 Euro. The maximum order value within the EU is 12.500 Euro.
Payment in advance bank transfer
Please transfer the total amount with your order number to our account which you received in the confirmation email. Please note that bank transfers within Germany can take up to three working days. Transfers from abroad, especially from Austria and Switzerland, usually arrive very quickly. From other countries, transfers can take a little longer on average.
Payment in advance Paypal
At the end of the order process you will be redirected to the page of Paypal. There you can initiate your payment. As soon as the Paypal transaction is completed, the status of your order will change in the store. The goods will then be shipped as soon as possible.
Comparison of e-bike tuning products
Type |
Software | (Module) Software (Controller) |
Box | Module | Module | Module | Module | (Kit) Module / Sensor |
(Kit) Module / Dongle |
Dongle |
Range of functions | ***** | ***** | * | ***** | **** | *** | *** | *** | *** / ** | * |
Easy installation of the tuning |
***** | ***** | **** | ** | ** | ** | ** | ** / * | ** / * | * |
Invisible after installation |
***** | ***** | * | ***** | ***** | ***** | ***** | ***** | ***** / **** | **** |
Switching on / off while riding |
* Gerät |
***** Gerät, Display |
* Box |
***** App, Display |
***** Display |
***** Display |
***** (App), Display |
*** Display, Magnet |
***** / **** Display / Dongle |
**** Dongle, (Licht) |
No more tuning Module at the bike |
***** | ***** | ***** | * | * | * | * | * | * / **** | **** |
Invisible dismantling |
***** | ***** | ***** | ***** | ***** | ***** | ***** | ***** | ***** / *** | *** |
Easy dismantling |
***** | ***** | ***** | ** | ** | ** | ** | ** / * | ** / * | * |
Correct display of km/h |
***** Display |
***** Display |
* | ***** Display, App |
***** Display |
***** Display |
***** Display, App |
* | **** Display |
* |
Dethrottling |
***** | ***** | ***** | ***** | ***** | ***** | ***** | ***** | ***** | ***** |
Reducing |
* | ***** | * | ***** | ***** | ***** | ***** | * | * | * |
Price range in euros |
169 to 209 |
189 to 299 | 149 to 154 | 219 to 239 |
159 to 179 | 139 to 259 |
139 to 309 |
89 to 199 |
89 to 209 |
139 to 159 |
Important: Tuning measures on e-bikes and e-scooters mean that they are no longer permitted for use on public roads. Legally permissible use is therefore only possible on private property or - if permitted - in competitions. Driving an e-bike or e-scooter modified by tuning measures on public roads can lead to criminal liability for driving without a license as well as driving without insurance coverage. Tuning measures on the e-bike and e-scooter can lead to a loss of warranty rights and manufacturer warranties. In addition, tuning measures can lead to a loss of insurance coverage and accident victim assistance benefits in the event of accidents. The e-bike (or e-scooter) modified by tuning measures is exposed to an additional load due to the higher speed, which can lead to safety risks.