The kit was relatively easy to assemble, and worked straight away. Two small issues with the installation were encountered. 1) I had to file off a couple mm from the fork "dropouts" to fit the axle of the new wheel, 2) added a spacer washer to the new axle to centre it in the forks; probably my bike was not perfectly symmetrical. I found clear information and illustrations on the website to cover the first situation. The assembly instructions are nice and clear. Extremely happy with the performance of the kit. The only downside was that I had to wait quite a long time between payment for the kit, and its arrival. I understand this was initially due to supply shortages, and later to safety requirements for couriering the larger battery slowing down delivery.