PearTune MSO 4.0 for Bosch (Gen2, Gen3 & Gen4)

PearTune MSO 4.0 for Bosch E-Bikes (Gen2, Gen3 & Gen4)

The best version of the popular PearTune module so far, now with many interesting additional functions. The PearTune MSO is a proven tuning tool with which the 25 km/h speed limit of e-bike motors can be completely removed - consequently, "MSO" also stands for "Max Speed Off". All this with correct km/h indication on the display. But the new PearTune 4.0 can do much more: For the first time, there is the option to set the maximum speed individually using the + and - buttons on the display. A truly unique feature of this tuning tool is the "chip lock" function. With this feature, the module can be made virtually invisible, so that no one can recognise that a tuning tool has been installed (i.e. the e-bike & display function normally; unlocking is only possible by means of a specific key combination).

The PearTune MSO 4.0 is a module that has to be connected to the motor (between motor and display and between motor and magnetic speed sensor). For a particularly easy installation, the module is equipped with original connectors ("Plug & Play").

This tuning tool is not only compatible with the new Bosch 2020 / 2021 Gen4 drives (with anti-tuning software), but also downward compatible with most older Bosch e-bike motors (Gen2 and Gen3)!

Please note: If you need a crank puller to open the motor, you can purchase a low-priced crank puller in a special offer here with the purchase of this module.

PearTune MSO 4.0 for Bosch - Functions at a glance

-Complete removal of the speed limit.

-Maximum speed individually adjustable: For the first time, the level of maximum motor support can be individually set with the + and - buttons, in 1 km/h increments.

-Correct speed indication in the display, even when tuning is active.

-Chip lock ("Lock the Chip" function): A feature that makes the tuning module virtually invisible. If the chip lock is activated using the + and - buttons on the control element, the tuning chip is locked in the software so that no one can see that a tuning tool has been installed on the e-bike. This means that the e-bike and display function normally and the tuning cannot be switched on. Unlocking again is only possible with a certain key combination. The tuning will then function normally again.

-Chip activation: The tuning chip can be switched on or off at any time by briefly pressing the WALK button or by pressing the + and - buttons twice quickly (long button press for COBI). When switching on and off, the display briefly shows whether the tuning has actually been activated or deactivated.

-No generation of error codes (according to the manufacturer's statement).

-Tuning status when switching on: With the new PearTune 4.0, you can set whether the tuning should automatically be ON or OFF when the e-bike is switched on.

-Chip reset: If you want to replace the speed sensor or use the tuning chip on another e-bike, you can reset the chip. When resetting, you can restore the factory settings or alternatively keep the chip settings.

-Adding the correct kilometres travelled: When tuning is activated, the actual distance travelled is no longer displayed while driving. Now you can set how the missing kilometres are to be recalculated or supplemented - for example, only when stopping or as a supplement while driving and when stopping, etc.

-Switch between NORMAL version and STILL ON version possible (with the STILL ON version, the tuning is always active as soon as the e-bike is switched on).

-No separate battery required (power supply via the display plug).

-Plug & Play: The module has been equipped with original connectors for easy installation.

-Small & light: The module is very small and can therefore be easily installed. The weight is just 12g.

PearTune MSO 4.0 for Bosch - Compatibility

This tuning tool is compatible with all Bosch e-bike drive systems and displays from 2014 up to and including 2020/2021:

Drives: Gen2, Gen3, Gen4: Active Line / Performance Line / Performance CX Line / Active Line Plus...

Displays: Intuvia, Purion, Nyon, Kiox, Cobi, Smartphone Hub Cobi

Compatible with Bosch Anti-Tuning Software.

Not compatible with Bosch Smart System 2022 (BES3).

Tip: Bosch Smart System e-bikes (BES3) can be easily recognised by the charging cable plug, among other things.

SQUARE plug = Bosch Smart System BES3 (Gen4) + Bosch Gen5:

ROUND plug = Bosch Gen2, Gen3 & Gen4:

If your Bosch e-bike charging cable has a round plug (as shown above), you have selected the correct tuning module (provided the bike does not have ABS or a rim magnet). If your Bosch e-bike does not have either connector, you either do NOT have a Bosch e-bike or an e-bike with the old Gen1 drive (Classic Line).