How fast can a 1000 watt bike go? A 1000-watt electric bike is basically a moped in disguise; if you unlock the speed limiter (for off-road use), it can easily hit 30 to 35 mph (48-56 km/h) or even more but, keep in mind that most street-legal versions sold in shops are software-locked to 28 mph to keep them legal, but the acceleration to get there will be incredibly punchy.
