E-bike tuning - for e-bikes/pedelecs with POLINI motor


POLINI - The experts were amazed when the Italian specialist for accessories and tuning presented the EP-3 drive in 2016. The 250 watt motor was convincing right away. In 2019, the Italians followed suit and the EP-3+ was even more powerful. The crowning achievement of POLINI 's development is the current E-P3+ MX drive, which conjures up a rich torque of 90 Nm on the road. It will be interesting to see what else POLINI has in store for the future.


As already mentioned above, there are three different motors from POLINI. They are all suitable for pedelecs up to 25 km/h and differ more or less only in torque: 70, 75 or 90 Nm. The Badass Box 4 can be used with all three motors. And of course the tuning module, which is manufactured by POLINI itself.

The following list shows you which modules we at SIP Scootershop offer for the POLINI engine:

The Italians are the only manufacturers of e-bike and pedelec motors who also offer tuning modules. Polini offers a module for its own POLINI motors that is mounted directly on the drive. It remains invisible from the outside.

E-bike and pedelec tuning from Lower Franconia. The so-called Badass Box is not installed on the motor, but simply attached from the outside and works with the POLINI drives, among others. Version 4 is the latest model and offers a range of over 7,000 kilometres.


At SIP Scootershop we offer the following tuning modules for POLINI engines:

These small boxes are plugged onto the sensor of the bike or pedelec and now this tool halves the transmitted speed, doubling the motor support. It is a wireless device that can be removed again in no time. The manufacturer Badass is the market leader here.

These modules contain a chip and cables with plug connections. They are installed invisibly under the engine cover and clamped between the sensor and the control unit. Many modules can even be switched on or off via the display while driving. The latest modules, such as the Speedbox B, also have integrated app control via Bluetooth. The control and also the reading of the motor data can be done with the smartphone. However, tools are required for installation and removal. In the following, we will go into more detail about these modules.

The motors are controlled by a speed pulse that tells them how fast a pedelec or e-bike is travelling. If the pulse reaches 25 km/h, the motor switches off. However, if only every second signal of the impulse comes through, 50 km/h can be reached, because the motor is "fooled" into thinking it is travelling at a different speed. With cheap modules, the speedometer then simply displays half the speed.

More sophisticated chips are more advanced: they halve the impulse only from 23 km/h or, in some drives, they are directly connected to the data transmission between sensor and motor, so that the speedometer always shows the correct values. The most modern tuning modules, for example from VOLspeed or Speedbox, even display the total kilometres driven and average speeds correctly.

However, the software version of the bike and pedelec must also be kept in mind. A carelessly installed update from the manufacturer can abruptly end the tuning pleasure. Be careful, because the motor manufacturers and tuning experts are constantly playing a cat-and-mouse game.

Want to know more about e-bike tuning?

Here you will find all the information you need on the subject: Finding the right tuning module.


It should be noted that the operation of this type of modified electric bicycle on public roads may be against the law in some countries. The dealer accepts no responsibility for any damage caused by the use of tuning products. Electric bicycles equipped with tuning products must not be used on public roads, cycle paths and squares. Electric bicycles equipped with tuning products may only be used on private property and at your own risk.