I purchased the Swytch kit to convert my bike into an e-bike since I couldn't find any affordable e-bikes that would fit my 6'5" frame. The conversion kit seemed like the perfect solution as it allowed me to use my XXL bike. I learned how to install it by watching numerous YouTube videos and the Swytch support team also provided me with assistance. Although I experienced a power failure, the support staff was quick to provide me with a replacement part, and I give them five stars for their excellent service. While I would like to upgrade my original kit, I have decided not to do so. I give the kit four stars because it takes a long time to ship to the States after ordering, and Swytch doesn't offer a trade-in option. Nevertheless, I am happy with the kit overall.