Electric Motor Cheapest Motorized Conversion Kit Side Hung Bicycle Set 24V 250W. Motor & mounting plate: Controller: Controller connection: (parts for reference only) Freewheel & adapter & chain: Accelerator: Brake lever: Headlight (with battery indictor & horn): Key switch: Axle: Connectors: Charging joint: lead-acid battery charger(For 15-20Ah).