The CYC X1 Pro Gen 3 mid-drive motor is a high-end/high-performance ebike conversion system from CYC Motors in Hong Kong. These guys know what they are doing. This motor preserves a perfect chain line on any bike and tucks up high off the ground even on modern mountain bikes with a curved downtube. Its torque sensing and cadence sensing delivers power at the cadence you choose and senses when you crank up your effort and delivers more power fast.