Once installed it proved a great product, installing it was not as straight forward as suggested. despite having a fairly main stream Boardman bike, few of the parts fitted. The wheel axle was to big requiring the fork to be fettled. The bracket for the handlebar did not cater for the one piece bar/stem, so had to be "adjusted", the magnet ring would not fit the crank arm so had to be be "reshaped" in order to fit, likewise the sensor bracket. If you are technically able, not an unsurmountable issue, if not, I would have been returning the kit. However, once on, it is a great bit of kit, that has transformed the riding experience for my wife, now it is me struggling to keep up !