Flying Horse 2-Stroke/4-Stroke Motorized Bicycle Handle Bar Mounted Analog Speedometer &ndash; Gas Bike MPH and Distance Display This Bike Engine Analog Speedometer tracks the speed of your motorized bike, and even a bicycle The speedometer will record up to 50 MPH of speed whether you're pedaling your road bike or giving your motorized bike throttle Installation is simple- just mount the rotor in between your wheel and fork, attach the cable from the rotor to your speedometer, mount the speedometer and you're ready to roll The reset knob on the side lets you reset the total mileage on the speedometer as simple as any other speedometer around Works best with 26" and 27" wheels, mounting hardware included