This has transformed my favourite trek hybrid bike, now I can leave home in either direction up very steep hills which has been stopping me riding for several years. The kit did take an age to arrive ordered in May delivered in December. However I fitted it myself in a couple of hours. it took a while to work out which amount of pedal assist I needed for each hill but now I am delighted with the conversion. definitely need to recharge after each use even though I got the bigger battery, but it is very hilly here. I have not tried to reach customer support as the fixing went smoothly.