hello,i bought my 2 sons pocket bikes,ages 8 and 12,which they loved.i am 190lbs and could not believe the bike actually pulled me.these bikes are fast and being so low to the ground they feel fast.i bought them helmets and pads cause if they do fall at 35mph,it could be dangerous.they are a lot of fun,easy to work on,gives them something to do.i like the 47cc pocket bikes,seem to be the faster of the little ones.like any other power bikes,they can be dangerous,so teach them what to do and what not to do.a lot of fun for a little money.buying parts can be hard cause there are so many junk parts out there.always read the feedback.hope you have fun and always ride safely.