Features1Suitable for DIY electric bicycles, electric tricycles and electric scooters. 2The controller shell is made of aluminum alloy, which can protect the internal circuit and has good heat dissipation to avoid thermal overload. 3The wires of the controller interface and interfaces are sturdy and durable to ensures low failure rate during longterm use. 4High speed conversion set, provide good usage experience. 5Professional manufacturing, stable performance and high reliability.SpecificationItem type:ElectricBicycleConversionHighSpeedSetMaterial: metalColor: As picture shownWeight: Approx. 3942gMotor: rated voltage 24V, rated speed 2750RPM, rated power 250W, rated current 14APackage List1 x Motor1 x Controller1 x 55T Four-hole Crankset1 x LengthenShaft1 x Flywheel1 x Lamp1 x 25H 146 sections chain1 Pair x Throttlegrip1 Pair x Brake Lever1 x Charger1 x Charging Port1 x Flywheel Connector1 x Electric Door Lock2 x Key1 x Plug-in bag