Question: what size dirt bike should i get for my 13 year old?
Answer: I'd recommend something like a Yamaha TT-R230 or a Honday CRF230F. +1. A 2-stroke 250 for a 13 year-old beginner rider is insane. I like the idea of a two-stroke but even a 125 might be a bit tall for a 5'6" rider.