Question: what size dirt bike should i get for an 8 year old?
Answer: Most 8 year-olds will be happy on a 50-125cc dirt bike. While the displacement of the engine is a factor to consider, more important factors are the seat height and the weight of the bike. A seat height between 22 and 27 inches will be a good match, and I wouldn't recommend any dirt bike over 180 pounds.