Abstract: An electric motor that is installed on a bicycle frame that includes a first side, a second side, and a bottom bracket shell. The electric motor contains a first portion, disposed on the first side of the frame of the bicycle frame proximate the bottom bracket, and a second portion, disposed on the second side of the bicycle frame proximate the bottom bracket shell. The first portion of the electric motor includes a stator and a rotor. The second portion of the electric motor includes a rechargeable battery. A bicycle crankset, with two crank arms, two pedals, and an axle, is rotatably coupled to the bottom bracket shell of the bicycle frame, where the axle of the crankset extends through the first and second portions of the electric motor. The rotor includes a sprocket that intermeshes with a bicycle chain to drive a rear wheel coupled to the bicycle frame.