The top speed of the Royal Enfield Desert Storm motorcycle can vary depending on various factors such as road conditions, rider weight, and modifications (if any). The manufacturer's claimed top speed for the Royal Enfield Desert Storm is approximately 120 km/h (75 mph). However, it's worth noting that Royal Enfield motorcycles are known for their cruising and relaxed riding experience rather than high-speed performance. While they can certainly reach higher speeds, it's important to prioritize safety and adhere to speed limits and traffic regulations while riding.