29-inch wheels fit riders 64 to 74 inches tall. Five levels of electric motor assistance while you pedal; assists up to 20 mph, last up to 45 miles. 6061 aluminum mountain-style frame with front suspension fork is built for tough trail riding, while the oversized handlebar and stem provide improved strength and control. 250-watt pedal assist hub-drive motor allows you to go further and ride longer than ever before. The battery is integrated into the downtube for a low center of gravity and improved stability. 7-speed trigger shifter provides quick and smooth gear changes. Front and rear mechanical disc brakes deliver crisp all-condition stopping. Alloy double wall rims provide lightweight durability, while mountain tires feature e-bike specific casing to provide optimum stability and performance. Tool-free adjustable seat post makes it easy to find a comfortable fit. Includes 2-year warranty on battery and electric assist parts, and a lifetime warranty on the frame and fork.