I installed it on a Radwagon 4. 2022 model. Installation was a breeze and I'm half blind. If I can do it anyone can. No increase in top speed, but that was not my goal. I haul groceries and other things on my bike as well as travel the backroads of rural Georgia. I wanted the increase in power to get up the hills and out of the way when needed. It has not seemed to decrease battery life as I regularly travel 50 miles on a charge. I do carry a spare battery just in case. If you have any additional questions just ask. I'll try to come on here more often. Ride Rad!!