I gave a 6-year-old child for DR - he is happy and rides 15 km with me (he can’t do more yet). But we ride with him at an average speed of ~ 17-20 km / h! Dynamics of dispersal because of the lightness led crazy! Thanks to the forum, where I was advised not to go for shock absorbers, front derailleurs, etc. , which adds a lot of weight to the bike, but it doesn’t make sense! I recommend everything! P. s. I hope it lasts a long time!