The ultimate e-bike. The GOTRAX Tundra Off-Road Electric Bike is built with a sturdy aluminum alloy frame and the longest range of any of our e-bikes yet at up to 70 miles per charge. If you need to get anywhere, the Tundra will take you there. 26 x 4in. air-filled pneumatic tires can handle any kind of commute you have from bumps to cracks to the off-road. A redesigned mountain bike frame ensures a sturdy, dependable ride on this multi-purpose e-bike Powered by a rear wheel 750 W motor takes you to a top speed of 20 mph and allows for better hill climbing ability with increased initial acceleration Built with a 48V 20aH battery, the Tundra is capable of a range up to 70 miles per charge thanks to its pedal assist technology and up to 43 miles on pure electric Utilize pedal-assist technology to help out your legs and lungs during your rides. The motor will automatically engage as you start to pedal forward when your e-bike is powered on.