Urban racer R3 is an E-bike with high standard quality in all aspects, with the entire frame lightweighted with carbon fiber material and the frame size satisfies various height of riders. Lithium battery electric assist function reduces the burden on the rider effectively and provides the user with the best riding pleasure. The Urban racer R3 features real-time ride speed, intuitive feedback on calorie burning data, and all hoses and brake hoses are hidden in the frame. The motorized gear (rear derailleur) and light-sensing night riding lamp incorporate innovative, seamless design and low wind-resistant design elements, enabling the Urban racer R3 to achieve a high degree of integration, sporty and technical sense.The entire vehicle is made of ultra-light carbon fiber material to reduce cycling burden, hiding all circuits inside the frame, keeping the body highly tidy. Technology and smooth surface design language can effectively reduce cycling wind resistance.Electric assistance effectively enhances the pleasure of cycling and driving, helping ordinary cyclists to integrate into a better cycling team through this technology, eliminating the psychological burden of riding difficulties and obstacles, and continuously promoting more people to participate in environmentally friendly cycling activities.Lightweight and high hardness carbon fiber provides better safety for cyclists, intelligent light sensing lighting provides lighting support for night riding, and electronic transmission and intelligent electric system, as well as real-time speed data feedback, make it easier for cyclists to operate.