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The PearTune MSO is a popular tuning device made in the Czech Republic.  The PearTune MSO (Max Speed Off) fully unlock the speed limit of your e-bike for speeds up to +99km/h. Speed values remains accurate even with the tuning in active mode. The tune is activated by just pressing the buttons on the  control unit. Detailed manuals and video instructions are provided for an easy installation. 
2 products