If any unbeatable royal bike is here the first name coming in my mind is royal Enfield. what a bike I hv ever seen in my life.the real feature in this bike is its dug dug loud voice.some people complaint about its mileage but u see that this bike has a powerful engine.when u ride it u looks like a royal man.u can trust on it blindly.there has no issues about its parts.so buy it and feel like royal.good day.500 cc engine u just imagine about the power of this bike.