Yamaha yzf R15 s is one of the best bike in terms of look and in term for performance yamaha launched r15 way back but till know the bike in a trend becoz its comes with the styel and comfort if I talk about the speciffication of the yamaha r15s its come with the 149 cc engine which give u aprox 16.8 bhp at 8500 rpm and the torque of the bike is 15nm at 7500 rpm and its a 1 cyliders engien with 6 gears the price of the bike is aprox 1.20 lakh ex showroom but spent that much money on a bike in worth it becoz its a great bike