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badassBox Yamaha Typ 3.4

badassBox Yamaha Typ 3.4
badassBox Yamaha Typ 3.4

139,00 EUR

19 % VAT incl. excl. Shipping costs

Shipping time: 1-3 Days

Product no.: BA-YA-034

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BadAss - It simply works!

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.

The badassBox Type3.4 Bosch is compatible with all Yamaha mid-mounted motors.

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!


  • 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. - For future use you won’t need tools to relocate the magnet!
  • 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: 52mm
  • Height: 42mm
  • Width: 21mm
  • Weight: 32g 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.

Magnet position Yamaha Typ3.3 2015-07 EN

eBike tuning that simply works. Requests for merchant bikes welcome. After considering, access to B2B area.

Customer reviews:

Author:  am 03/05/2018     Evaluation:5 of 5 Stars!

This thing works perfect.
I received the unit in 2 weeks to the central USA. $154 USD, I used PayPal.
Installation was very easy, no adapter needed on my Haibike. The first time, it took 2 minutes on my Haibike/Yamaha PW-X. Now, installation is 20 seconds.
While looking for a speed tuner, my first thought was I wanted the speedometer to display the correct MPH. Badass Box displays only half of the real MPH above 8 MPH. However, after using the Badass Box, needing to double the displayed value in my head is no problem.
I own two other Haibikes. One Yamaha PW with Bikespeed, the other Yamaha PW with a Speedbox2. In my opinion, Badass Box is easily my preferred way of unlocking the speed of any Ebike. In addition, the same Badass Box 3.4YA works on both the Yamaha PW or PW-X, Important if you update you bike someday.
With moderately hard pedaling, I average 23-25 MPH on the level for long stretches. In a short sprint, I can almost do 30 MPH. I still get about 20 miles @ 23 MPH out of a 500 watt battery.