A 48 volt power house pushes this mountain bike at speeds up to 30Mph. That’s a bit of a boost from many off the shelf E-bikes. [Jennifer Holt] wanted speed, and to retain the off road ...

They also aren't always overly expensive anymore; just look at Walmart, where one popular electric mountain bike is now ...

The Totguard 500W Electric ... This mountain e-bike is equipped with a 21-speed Shimano gear shifter and a powerful 500-watt motor that can crank it to speeds of up to 21.6 mph.