Speedometer shafts are important components of a motorbike's gearbox that measure the speed of the motorbike and transmit it to the speedometer. The shaft is usually attached to the gearbox or front wheel and uses a system of gears to measure the speed of the motorbike. Accurate speed measurement is important for the safety and effective utilisation of the motorbike.
Gearbox speedometers need to be checked regularly and replaced if necessary to ensure accurate speed measurement. There are also electronic speedometers that measure the speed via sensors on the wheel.