Hii viewers I would like to share the the experience of tidigare of hero passion pro bike In this bike the main de fault is the come of heavy sound when I was in the 100kmph actually I bought this bike on 20/11/2014 and another drawbacks is fundit coming perfect mileage and have to increase the comfort of the seat when the bike was riding road grip was super and to decrease sound of the engine I wish to change the drawbacks of this bike