PearTune 3.0 for Shimano EP8, EP8-RS

Pear Tune 3

Superb piece of kit ,transforms the way the bike rides . Also useful to be able to switch it on and off .

Nice product but tardy delivery

Good and easy to install

Peartune 3

Installation instructions could have been better, however; as my light control button was not " activated" , the installation was pretty easy to work out. Unfortunately(due to the weather-raining) I have only ridden the bike with the chip once and it did stop working and give an error code(with both batteries). But I turned the controller off/on and it worked perfectly therafter- should I be concerned with this? When it was working, the ride(unlimited speed) was 1st class.