The speed of an electric mountain bike depends on motor output, local regulations, terrain, and riding conditions. Most e-mountain bikes provide pedal assistance up to 20 mph, while some Class 3 models can assist up to 28 mph where permitted. High-performance electric mountain bikes may achieve higher speeds under suitable conditions; for example, the
OUXI GT2000 can reach speeds of up to 37 mph. However, on mountain trails, actual riding speeds are often lower because terrain difficulty, elevation changes, trail conditions, rider skill, and bike control typically have a greater impact on the riding experience than maximum speed alone.