After a long wait, the Swytch universal kit finally arrived. I've installed it on my wife's Giant Box Two full-suspension mountain bike. The end result is great; my wife is very happy. She can now keep up and overtake :-$, recently easily completing an initial 14 mile circuit. The installation needs some comment. If you have 1" diameter handlebars where it is clamped to the stem you will need to ask for some suitable spacers; they aren't included by default. Regarding the pedal sensor magnetic disk installation. For the size of gap between the pedal arm and frame, the manual suggested 'Easy Fit Regular' configuration. However, due to the 16mm spindle diameter, with the semi-circular toothed spacers trimmed to suit, it seemed to me to be liable to be knocked off since the semi-circular disks are not a tight fit nor is the retention ring (circlip) a tight fit. So I decided to glue them together with contact adhesive (which should still allow for it to be dismantled in the future if needed) AND I installed the pedal disk arm. This has resulted in a much more secure installation. Being a full-suspension mountain bike, the pedal sensor itself had to be trimmed to fit nicely, which was suggested in the manual. The front wheel was an easy fit and blends nicely with the existing rear wheel. The other components fitted easily. In use, it just works! We did discover that there is a 0 power level which I think to maximise range will be needed because the assistance wasn't necessary on the flat (or downhill of course). It would also have been easier to change power level without taking your hands off the handlebar but that isn't an option. We did try the twist throttle but it interferes with the gear levers so it can't be used. I gave it four stars because there is room for improvement both on kit content and price. Looking forward to the summer!