79cc monster 80

  1. D

    49cc 4G T Belt Kit vs. 79cc Monster 90 Bike Engine Kit

    Hello there, I just ordered a bicycle after having my 49cc Chinagirl for quite some time. I have put many, many miles on my 2 stroke. Before the 2 stroke, I had an older 4G T belt kit that I experienced issues with the bearing on the transmission. With that being said, I am looking at...