NIU - KQi2 Pro Foldable Electric Kick Scooter w/ 25 mi Max Operating Range & 17.4 mph Max Speed - Your Last Mile in Style. With up to 25 miles of range, the KQi2 Pro delivers great city performance at a top speed of 17.4 mph. The KQi2 has a minimalist lightweight design with a drum brake engineered to fit neatly inside the front wheel. As stylish as it is swift.