Video This is a Swytchbike I received my superb Swytch kit February 2019. I had no trouble fitting it to my mountain bike. YouTube link: https://youtu.be/GG2l0hwgl-Q 7 months on and my kit has been fitted to 5 more bikes. BMX, Mountain bike, road bike, downhill bike all have been great fun to ride. I even put the Swytch kit on my wife’s bike which is already electric making it an all wheel drive Ebike! I cycle in favour of driving a lot more than ever before. There is a lot of customisation possible with the computer allowing you to tailor it precisely to your requirements, It also works straight out of the box if you don’t want any complications. Check out what Sir Bradley Wiggins has to say about ebikes https://road.cc/content/news/265792-e-bikes-arent-cheating-says-sir-bradley-wiggins Some bikes are definitely easier to fit a Swytch kit to than others. I have many Swytch builds plus hints and tips on my YouTube channel Leepspvideo. Also check the Swytch forums, other Swytch users are always offering great solutions.