E Bike Tuning - Unlock the Speed Limit! E Bike Tuning Store to derestrict Bosch Gen2 or Gen1, Yamaha Powerdrive or Syncdrive, Panasonic 36V, Impulse, Shimano STEPS, Brose and BionX motors. E Bike Tuning Devices take away the Speed Limit of your Electric Bicycle. Unlocking the Speed Limit (for example at 25 km/h) of Your E Bike.