SpeedBox 3.0 eBike Tuning for all Bosch engines

SpeedBox 3.0 – 3rd generation tuning chip for Bosch systems (Performance Line, CX, Active Line, etc.). It allows you to select the speed limit of the electric assistance and the display will continue to show the correct data: speed (max/vid), daily mileage, distance.

How it works

• Activation (WALK): briefly activate WALK → display 9.9 km/h → assistance unlocked (40, 50, 60+ km/h).
• Switching off (WALK): WALK again → display 2.5 km/h → 25 km/h limit returns.
• Without WALK: use the – + – + combination to switch on/off.
• Selecting the limit: modes Turbo → eMTB → Tour → Eco → Tour → eMTB → Turbo. Confirmation by briefly activating WALK or turning the rear wheel 360°.
• Values: 1.5 = 15 km/h; 2.0 = 20; 2.5 = 25; 3.0 = 30; 9.9 = 99 km/h. Saves after ~5 s of inactivity.

Key benefits

• Real data on the screen above 25 km/h.
• Quick ON/OFF control (WALK or – + – – +).
• Flexible limit – set as needed (use responsibly, where legal).
• Plug & Play installation with original connectors.

Compatibility

• Engines: Bosch Performance Line, Performance Line CX, Active Line, etc.
• Displays/controls: models with WALK or – + – + combination.

Installation and use

• Connect in the direction of the lock (without twisting the plugs).
• Check the activation and limit change sequences after installation.
• When you have finished driving, allow the “countdown” to 0.0 km/h (if applicable) before switching off.

Important (right and guarantee)

• Changing the speed limiter is forbidden in public traffic in many places – use on off-road/private tracks.
• Tuning may affect the manufacturer’s warranty.
• Higher speeds require the right brakes, tyres and skills.

Specifications

• Model: SpeedBox 3.0 (Bosch)
• Control: WALK (9,9 = ON; 2,5 = OFF) or – + – + +
• Limit scale: up to 99 km/h (displayed on screen)
• Readings: actual speed/mileage remains correct
• Installation: plug-and-play, original connectors

FAQ

Will it display the correct speed above 25 km/h?
Yes, SpeedBox 3.0 keeps the correct indication on the display.

Can I change the limit at any time?
Yes – via the mode sequence and confirmation by WALK / 360° rear wheel turn.

What if my bike doesn’t have WALK?
Use the – + – + combination to activate/deactivate.

For SpeedBox 3.0 with 4th generation Bosch motors (manufactured in 2020 or later), the bike must be left on after the ride is finished until 0.0 km/h is displayed. During this process, the time remaining will be displayed in minutes. You can then safely switch the bike off.

Assembly
When connecting the SpeedBox to your e-bike, you will find colour-coded connectors to make installation very easy. We’ve prepared detailed instructions and videos to make installation easier for you.

If you plan to install SpeedBox on a brand new bike, make sure you have ridden it at least 10 km before the chip is activated.

Full installation details here.

Warning
Please note that the use of this type of modified electric bicycle on public roads may be against the law in some countries. The manufacturer and the seller accept no liability for damage caused by the use of SpeedBox products. “Use of SpeedBox may void your ebike warranty.

We do not recommend updating the e-bike software

If you are updating your e-bike’s firmware, first remove the SpeedBox from the e-bike, update the firmware and reinstall the SpeedBox.

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