PearTune MSO 4.0 for Sachs
TYPE: Bafang
VENDOR: PearTune
PearTune MSO 4.0 for Sachs
The PearTune MSO 4.0 is a tuning tool for Sachs e-bike motors (from model year 2020 onwards). The 25 km/h speed limit is completely removed so that the full potential of the drives can be used ("MSO" = "Max Speed Off"). In contrast to the older PearTune MSO 3.0, the 4.0 version even allows the maximum speed to be set to an individually desired value. Another new feature is the practical "chip lock" function, which makes the tuning virtually invisible to third parties.
The tuning can be conveniently switched on and off via the control buttons of the e-bike. Even when tuning is active, the e-bike display shows correct values. The PearTune MSO 4.0 is a tuning module that must be connected to the motor. The connection is made via original waterproof plugs.
PearTune MSO 4.0 for Sachs - Features at a glance
-No more 25 km/h speed limit.
-Individual maximum speed freely adjustable in 1 km/h steps (using the control buttons on the e-bike).
-The display shows real values, even when tuning is active.
-Tuning can be switched on and off (by briefly pressing the light button once or twice or using the + and - buttons). To confirm activation/deactivation, the display briefly shows values of 9.9 (or 9) and 2.5 (or 2) km/h respectively.
-Switching 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).
-Chip lock ("Lock the Chip" function): With this feature, the tuning can be made virtually invisible. If the chip lock is activated, the tuning module is locked on the software side 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 module will then function as usual again.
-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 module on another e-bike, you can perform a chip reset. During the reset, you can restore the factory settings or alternatively keep the chip settings.
-Plug & Play: The PearTune MSO 4.0 module is equipped with waterproof original connectors for easy installation. The module is lightweight and compact making it simple to install.
-The PearTune MSO 4.0 module does not require its own battery.
Important notes:
-If you want to install the PearTune MSO module in a brand new Sachs e-bike, you must first ride the bike for at least 1 km before installing the tuning tool.
-If you ride above 25 km/h with motor assistance for a longer period of time, some data on the display may no longer be shown correctly immediately. However, after you have ridden below 25 km/h or without motor assistance for a certain time, these values will be displayed correctly again.
-After a long ride at high speed, we recommend not to switch off the e-bike immediately. It is best to wait until the e-bike switches itself off automatically - or to leave the bike switched on after finishing the ride until a value of 0.0 km/h is displayed.
PearTune MSO 4.0 for Sachs - Compatibility
-This tuning tool is compatible with SACHS e-bike motors from model year 2020 onwards (as used in BULLS e-bikes, for example). Even compatible with SACHS 2023 e-bike drive systems.
-Compatible with all displays.
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
Type |
Software | (Module) Software (Controller) |
Box | Module | Module | Module | Module | (Kit) Module / Sensor |
(Kit) Module / Dongle |
Dongle |
| Range of functions | ***** | ***** | * | ***** | **** | *** | *** | *** | *** / ** | * |
Easy installation of the tuning |
***** | ***** | **** | ** | ** | ** | ** | ** / * | ** / * | * |
Invisible after installation |
***** | ***** | * | ***** | ***** | ***** | ***** | ***** | ***** / **** | **** |
Switching on / off while riding |
* Gerät |
***** Gerät, Display |
* Box |
***** App, Display |
***** Display |
***** Display |
***** (App), Display |
*** Display, Magnet |
***** / **** Display / Dongle |
**** Dongle, (Licht) |
No more tuning Module at the bike |
***** | ***** | ***** | * | * | * | * | * | * / **** | **** |
Invisible dismantling |
***** | ***** | ***** | ***** | ***** | ***** | ***** | ***** | ***** / *** | *** |
Easy dismantling |
***** | ***** | ***** | ** | ** | ** | ** | ** / * | ** / * | * |
Correct display of km/h |
***** Display |
***** Display |
* | ***** Display, App |
***** Display |
***** Display |
***** Display, App |
* | **** Display |
* |
Dethrottling |
***** | ***** | ***** | ***** | ***** | ***** | ***** | ***** | ***** | ***** |
Reducing |
* | ***** | * | ***** | ***** | ***** | ***** | * | * | * |
Price range in euros |
169 to 209 |
189 to 299 | 149 to 154 | 219 to 239 |
159 to 179 | 139 to 259 |
139 to 309 |
89 to 199 |
89 to 209 |
139 to 159 |
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.
