Don Howard here. Living in Phoenix Bought a RadRover 750 and really like it, however there are a lot of gullies on the desert, I find that going down is fine, but sometime there is a lot of sand at the bottom and in slowing down, the bike can not get enough rpm's to get back up the hill. Hence, I want to order a 1000W Bafang MAX bike from China. It does not have a throttle, and I would like to install a throttle.