PearTune MSO is a "chiptuning" set for e-bikes.
It can remove the speed limiter from your e-bike, so the bike will not stop assisting at higher speeds.
The function can be turned on or off at any time during a ride.


For all YAMAHA 2014 - 2024 models with Display: LCD, LED, "X", "A", "C" and Interface X, also compatible with MORO07 and all models of GIANT´s e-bikes!!!



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  • The speed limit is removed completely, not just shifted to 50km/h.
  • Also for new PW-X3 and PW-S2 2023 models!!!
  • 2019 - 2023 models of Display A and Display C as well
  • Unlike other tuning devices, this device shows absolutely no display flickering or other unwanted effects. Everything else, but the speed limit removal, stays the same.
  • All display readings and control works correctly. No speed or mileage halving, even after removing the device.
  • The only difference is that you can go the speed you want with your bike.



  • Activated and deactivated with 2 short pressing the "light" button. Continuous indication on the display.
  • Original connectors, miniature waterproof enclosure. Can be deinstalled without any signs.
  • Microcontroller-based electronics. Automatic adjustment for all the parametrs like wheel diameter.
  • This version DOES FIT on all these YAMAHA engines made from 2014 till 2024: PW/PW-X/PW-SE/PW-TE/PW-ST/PW-X2/PW-CE/PW-X3/PW-S2
  • We offer similar device for Bosch, Shimano, GIANT and Brose motors.
  • More than 20 000+ units sold worldwide.
  • CE and RoHS compliant. Use at your own risk, according to your local law.
  • Comes with manual and instalation instructions.