This is truly a fantastic bike. By using all 'adult' bike parts you end up with a quality bike that can be ridden and maintained. No riveted chainrings and awkward chain guides here. Instead a narrow wide chainring and 10spd, 11-34T cassette will leave your kid climbing like a mountain goat. I was truly shocked by how much terrain my 5 year old could suddenly climb now that he has good gear ratios. Then when we pop out to a road section I just say 'four clicks with your finger' and he's ready to go.