Swytch 700c 50 mile kit We have had our Marin San Rafael hybrid bikes for about six years at our house in France. However, due to the pretty difficult hills around there, we had hardly used them. The conversion kit appeared to provide a really good solution, to using existing good bikes, with little wear and tear, without going down the ‘another new bike’ scenario! We had read a few reviews and seen some information on the net regarding the kits...but in the end we took a chance when we bought the two conversion kits. However, we have not been disappointed in any way at all! Great things 1. The kits arrived post free to our house in France. 2. Customer service re. a change of delivery address was good. 3. We took our time fitting the kits, and in all it took about 1.5 hours for both bikes. I had seen some reviews that suggested using sugru as an adhesive for the sensor, and had bought some in anticipation. That was a good thing, as it was needed for our conversion. The adhesive has been excellent. Adapting the sensor was easy. The whole conversion was without problems. 4. The power is easily adjusted, and in conjunction with gear changes, optimises the power available. 5. When we did have a minor problem, we had good support, and the issue was resolved very quickly. 6. We have cycled quite a bit since converting our bikes, and the power is delivered efficiently when you need it. This has included category 4 climbs. 7. The bikes don’t look like they are running on electric power! 8. The overall weight of the bike is considerably less than a pure electric bike. 9. Easy to fit. 10. Magic carpet experience. We would recommend it to anyone who wants Ann exsisting bike electrified