Yamaha R15 is currently the fastest 150 cc race bike.It churns out 17BHP& 15NM of torque .The engine of R15 is super refined& there’s hardly any vibrations which is noticable. It’s dedicated track focused bike which can be also used for city riding& decent highway riding.If you are looking for comfort, this may not be the bike for you because the riding position is aggressive& it will tire you out soon.
Pros,
1.Brilliant handler
2.Refined engine
3.Quality of parts, Fit& finish is top notch.
4.No Reliability issues.
5.Stick tyres(Mrf revz 130/70 rear, Nylogrplip 90/90 front)
Cons,
1.High maintenance(for a 150cc)
2.Uncomfortable riding position, not meant for long distance ride.
3.Stiff suspension.