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

TYPE: Bosch Gen4, Bosch Gen3, Bosch Gen2

VENDOR: PearTune

189,00 €

Payment & Shipment
Customer reviews

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).

Payment & Shipment

Delivery time, Shipping costs, Minimum order value und Payment methods:

Delivery time

Delivery time is 1-8 business days within Germany. Postal delivery time outside Germany may take longer.

Shipping area

We ship to Belgium, Bulgaria, Denmark, Estonia, Finland, Germany, Greece, Ireland, Iceland, Italy, Croatia, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Austria, Poland, Portugal, Romania, Sweden, Slovakia, Slovenia, Spain, Czech Republic, Hungary, Cyprus.

For shipping to Germany please use our german shop.

For a solution to Switzerland and Liechtenstein please see here.

We do not ship to the USA, France, Canada (including all overseas territories) and generally outside the EU.

Shipping costs

The shipping costs for Germany are 3,50 Euro. The shipping costs are waived from an order value of 180 Euro. For countries within the EU the shipping costs are 9,90 Euro. The shipping costs are waived from an order value of 300 Euro. We ask you to cover the cost of any return shipment yourself. Please note that customs fees may apply in third countries outside the European Union.

Minimum order value

The minimum order value is 25 Euro. Only from this amount you can use prepayment or PayPal and bank transfer as payment methods.

Maximum order value

The maximum order value for orders outside the EU is 1.000 Euro. The maximum order value within the EU is 12.500 Euro.

Payment in advance bank transfer

Please transfer the total amount with your order number to our account which you received in the confirmation email. Please note that bank transfers within Germany can take up to three working days. Transfers from abroad, especially from Austria and Switzerland, usually arrive very quickly. From other countries, transfers can take a little longer on average.

Payment in advance Paypal

At the end of the order process you will be redirected to the page of Paypal. There you can initiate your payment. As soon as the Paypal transaction is completed, the status of your order will change in the store. The goods will then be shipped as soon as possible.


Comparison of e-bike tuning products




Badass Box

RedPed / BluePed /






Sx2 Dongle


Software (Module)
Box Module Module Module Module (Kit)
Module /
Module /
Range of functions ***** ***** * ***** **** *** *** *** *** / ** *

Easy installation of the tuning

***** ***** **** ** ** ** ** ** / * ** / * *

Invisible after installation

***** ***** * ***** ***** ***** ***** ***** ***** / **** ****

Switching on / off while riding

Gerät, Display
App, Display
(App), Display
Display, Magnet
***** / ****
Display /
Dongle, (Licht)

No more tuning Module at the bike

***** ***** ***** * * * * * * / **** ****

Invisible dismantling

***** ***** ***** ***** ***** ***** ***** ***** ***** / *** ***

Easy dismantling

***** ***** ***** ** ** ** ** ** / * ** / * *

Correct display of km/h

* *****
Display, App
Display, App
* ****


***** ***** ***** ***** ***** ***** ***** ***** ***** *****


* ***** * ***** ***** ***** ***** * * *

Price range in euros

169 to
189 to 299 149 to 154 219 to
159 to 179 139 to
139 to
89 to
89 to
139 to


Customer reviews

Important: Tuning measures on e-bikes and e-scooters mean that they are no longer permitted for use on public roads. Legally permissible use is therefore only possible on private property or - if permitted - in competitions. Driving an e-bike or e-scooter modified by tuning measures on public roads can lead to criminal liability for driving without a license as well as driving without insurance coverage. Tuning measures on the e-bike and e-scooter can lead to a loss of warranty rights and manufacturer warranties. In addition, tuning measures can lead to a loss of insurance coverage and accident victim assistance benefits in the event of accidents. The e-bike (or e-scooter) modified by tuning measures is exposed to an additional load due to the higher speed, which can lead to safety risks.

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

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

189,00 €