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badassBox Typ 4 Kalkhoff

badassBox Typ 4 Kalkhoff
badassBox Typ 4 Kalkhoff badassBox Typ 4 Kalkhoff badassBox Typ 4 Kalkhoff

148,00 EUR

19 % VAT incl. excl. Shipping costs

Shipping time: 1-3 Days

Product no.: BA-KA-034

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badassBox Typ3.4 Kalkhoff-Impulse and EVO

The badassBox makes your ebike much quicker in no time at all, mounted in just moments. Back on public roads, the badassBox can be removed in seconds. Your ebike is, once again, legally in compliance with the regular speed limits.

You read ‘25’ – and drive 50!
Don’t be surprised at your speedometer: When your ebike is travelling at 50 km/h with a mounted badassBox, the speed displayed is only 25 km/h. Find out below why that is the case.

See for yourself: Your badassBox makes your eBike take off in a flash!

This is how the badassBox works:
The badassBox reduces the speed of the motor system by half from a speed of approx. 19km/h (depending on the circumference of the wheel). It makes no difference to the motor whether it performs at full power in the lowest or highest gear. The badassBox does not affect the maximum performance. The drive limit for Pedelecs is moved to over 50km/h.

The badassBox is powered by photo battery cells (type CR2) enabling it to perform over approx. 6000 km or one year (discharged battery) thanks to low power technology. As the signal transmission takes place without an electrical contact (contactless chip tuning) electrical damage is physically impossible. A microprocessor switches on and off automatically. The battery is replaced simply by opening the base of the housing.

Sound and reliable
The badassBox Typ3.4 is the fourth generation since the successful introduction of the Typ3 in 2013 - and it has been continually improved since then: The housing has been strengthened, the electronics enhanced and the firmware has been adapted to the current motors of a variety of manufacturers. The current badassBox Typ3.4 is now also splash proof and less sensitive to vibrations and bumps. These are only a few of many improvements that make the badassBox very reliable.

The badassBox is a quality product - every single device is inspected many times during production. Attention: The badassBox is only guaranteed to be genuine only with the seal on the base of the housing!

Items delivered:

  • badassBox Kalkhoff-Impulse and EVO – version 3.4
  • with battery and cover
  • O-ring, Toolfree 4mm
  • ★ Shipping by plane (outside EU) without a battery


  • Mount the badassBox via the speed sensor
  • Secure the badassBox using the O-ring at the sensor
  • Exchange the cross slot screw at the magnet with the clamping screw enclosed when used for the first time.
  • Relocate magnet, (see video) unchanged since Typ3.3. - Unscrew - relocate - screw together
  • Done!


  • Release the badassBox O-ring
  • Remove the badassBox
  • Relocate magnet to the original position

Technical data:

  • Length: 52 mm
  • Height: 42 mm
  • Width: 21 mm
  • Weight: 32 g incl. battery

Special feature: splash proof battery case, coated electronics. Also works under water.

After installation of the badassBox the magnet must be offset. The video shows this easy operation. ATTENTION: First time use, please exchange the Phillips screw of the magnet against the badassBox provided toolfree screw. Then the displacement of the magnet is possible without requiring any tools.

Position magnet Kalkhoff Typ3.4 2015-07

badAss eBike tuning .Offset the magnet for Kalkhoff systems.