Volspeed Tuning kit for Bosch Smart System Performance Line CX (Gen4 and Gen5) motor with Rim Magnet

Tuning module for Bosch Performance Line CX motor and a rim magnet ONLY. Important: This tuning only works with bikes that have a rim magnet. Models without a rim magnet are not supported. Supports Performance Line CX Gen4 (BDU37xx) and Gen5 (BDU38xx). Also Not compatible with Bosch ABS system.

The tuning kit manipulates the speed signal without altering the motor's power relative to pedaling speed. This guarantees a smooth motor control without speed limit interruptions. Depending on a tuning kit, some determine when assistance stops, while others remove the restriction entirely for continuous support. However, the achievable speed mostly depends on the eBike model. Achievable speed can be calculated using a simple formula:

Speed = Cadence [rpm] * Wheel circumference [mm] * Front Chainring Teeth / Rear Chainring Teeth * 60 [min/h] / 1.000.000 [mm/km]

The tuning kit can be activated directly on your bike’s display, after pressing the ' - + - + ' buttons. After Tuning kit activation speed limit is displayed for 5 seconds. If you would like to change maximumm speed, just press '+' or '-' keys. Possible values: 16... 28mph (25... 45 km/h). Default value: 20mph (32 km/h). The set value is saved.

To deactivate the tuning kit, press the ' - + - + ' buttons.

The tuning is always switched off after switching on the bike.

It is possible to set a "softer curtailment behavior" (dynamic mode). This significantly softens the otherwise very abrupt deceleration at the speed limit. Correct display of the speed, the distance covered and the average speed at all times.

Attention: When tuning is activated, the speed displayed is too low from 21km/h and the distance measured is too short. The odometer reading is therefore too low after using the tuning.

Please disable automatic updates in the eBike Flow App. And do not us flow app together with tuning kit.

This tuning kit is compatible with Bosch Smart System Performance Line CX motor and a Rim Magnet. Not compatible with with e-bikes with Bosch ABS system as well.

Volspeed:The Smart System is most easily identified by the Intuvia 100, Kiox 300 or Kiox 500 display type or control unit LED Remote, Purion 200 or the system controller.

Compatible with software versions up to 16.19.0

When connecting Tuning Kit to an e-bike you will find connectors colored to make installation very simple. We have prepared detailed instructions to make installation easy for you. Disassembly of our tuning kit is just as easy. If you have any troubles with installation or disassembly, do not hesitate to contact us. If you are planning to install Volspeed on a brand-new bike, make sure you ride it for at least 0.6 miles (1 km) before the tuning kit is activated.

Installation Guide Performance Line CX Gen4 (BD37xx)

Installation Guide Performance Line CX Gen5 (BDU38xx)

Please note that the operation of this type of modified electric bikes on public roads may be against the law in some countries. The manufacturer takes no responsibility for damages resulting from the use VOLspeed products. Electric bikes equipped with VOLspeed products are not allowed to be used on public roads, cycling paths and public places. Electric bikes equipped with VOLspeed products can be used exclusively on private property and entirely at one’s own risk. The use of VOLspeed may void the warranty of your ebike.

We strongly recommend using other safety features and protective gear to prevent injuries in higher speeds.
VOLspeed Products are thoroughly tested and we stand by their quality. VOLspeed provide 2 years warranty to all their Products!

Warranty does not cover damage resulting from eBike software updates. Remove the tuning kit before updating the software. Check with us first to ensure the kit is compatible with your updated eBike. We cannot guarantee that the kit will function the same after updates. Please exercise caution.