MotoGP and other road motorcycle racing leagues do not use kickstands on their bikes for several reasons:
Weight Reduction: In professional motorcycle racing, every gram of weight matters. Kickstands add unnecessary weight to the bike, which can affect performance and handling. The teams strive to minimize weight wherever possible to enhance acceleration, braking, and overall maneuverability.
Streamlined Design: The aerodynamics of a motorcycle play a crucial role in racing. Adding a kickstand would disrupt the sleek and streamlined design of the bike, creating additional drag and potentially affecting top speed. MotoGP teams invest significant effort into reducing drag and optimizing the bike's aerodynamic profile for maximum performance.
Pit Stops: During a race, motorcycles make frequent pit stops for refueling, tire changes, and adjustments. The absence of a kickstand allows the rider or pit crew to easily maneuver the bike on a stand or paddock stand, which provides stability and accessibility for quick servicing. Kickstands are not practical in a racing environment where speed and efficiency in pit stops are critical.
Safety and Stability: Kickstands are primarily designed for stationary parking on regular roads. In a racing context, kickstands can be a safety hazard. They could potentially catch on the road surface during high-speed turns or cause instability when leaning the bike aggressively. The bikes used in racing are finely tuned machines built for performance, and the focus is on maximizing speed and control, rather than stationary stability.
It's important to note that the bikes used in professional racing, like MotoGP, are purpose-built racing machines designed specifically for track performance. They are not intended for everyday street use. Therefore, features like kickstands, headlights, turn signals, and other street-oriented components are unnecessary and omitted to optimize the bike's performance on the track.