Imaycc 80Cc Bicycle Engine Kit, 2-Stroke Motorized Bicycle Kit Fit For 26-28 Bikes, Bike Motor Kit With Wired Digital Computer (Silver)strong>em>IMAYcc Bike Engine Kit Installation Steps:em>strong>ol>Attach the sprocket assembly to the rear wheel of the bike All parts are installed on the side without the original bike chain Please keep the origina..