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SpeedBox 1.1 B.Tuning Bluetooth Tuning Chip for Bosch Smart System

SpeedBox 1.1 B.Tuning is a Bluetooth tuning chip for e-bikes running the Bosch Smart System. It removes the factory speed limiter and lets you set your own limit, with a recommended maximum of 35 km/h.

Tuning can be switched on and off with the WALK function, a - + - + button sequence or the SpeedBox Connect app. Real speed is not shown on the bike's display.

Key Features

• Maximum speed: unlimited (35 km/h maximum recommended)


• Tuning status shown on display: 3.5 km/h = on, 2.5 km/h = off


• Correct travelled distance shown after the post-ride countdown finishes


• Speed limit setting: yes


• Real speed on bike display: no


• Activation: WALK function, - + - + button sequence, or SpeedBox Connect app (only when stationary)


• SpeedBox Connect app: supported (Bluetooth)

Compatibility

• All Bosch Smart System motors, including Performance Line SX, CX and CX Race (Gen 4 and Gen 5)


• All Bosch Smart System displays


• SpeedBox Connect app


• Not compatible with Bosch Rim Magnet (valve-mounted magnet)


• Not compatible with Bosch ABS system

Good to Know

• Do not activate or deactivate tuning while riding.


• Disable automatic firmware updates in the eBike Flow app. Firmware updates can make the chip inoperable.


• For bikes with the valve-mounted Bosch Rim Magnet, see SB12BT-B.

Legal and Safety Notice

This tuning chip changes the e-bike's factory speed limit and assistance settings. A modified e-bike may not be legal to ride on public roads, cycle paths or other public areas; SpeedBox products are intended for use on private property, at the rider's own risk. Installation may void the e-bike manufacturer's warranty. Installation by a qualified technician is recommended. Always wear appropriate protective gear.