Hey i have a question at the end of the video when he is reving bike it make this sound in middle rpm my derbi also makes this sound like something is touching and making this noise i cant find what it is maybe do you know what it can be
Soo' i have too' come! Back fore' thold If 80 CC Go 30 HP the! Trabi - engine 600 CC only have nearly 30 HP If in good shape something wrong bat ho' i donth know Like 👌🖕.