The fastest e bike currently available includes models like the Hi Power Cycles Revolution XX and the Delfast Top 3.0. The Revolution XX reaches speeds over 100 mph (160 km/h) in testing, making it one of the fastest electric bikes ever built, though it’s mainly intended for private land or racing use. In my testing and research on high performance e bikes, most bikes sold for normal street use are much slower because regulations limit them. In the United States, standard classes (Class 1, 2, and 3) usually cap assisted speed at 20–28 mph, while extreme models exceed those limits and are treated more like motorcycles.
Key examples of very fast e bikes include:
- Revolution XX – over 100 mph in controlled conditions
- Delfast Top 3.0 – about 50 mph top speed
- Stealth B 52 – roughly 50 mph with high output motor
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