I'm about 5'9 5'10 210 pounds 15 years old looking to get into the sport, 3-4k $ limit 2-4 stroke dont matter, i know how to ride some what.. thanks 4 reading
For the trail, XR250 or XR400, depending on your skill level...maybe a KDX200. Keep in mind that trail bikes dont perform flawlessly on the track and vice versa....most beginners stick with one or the other. With regard to MX..I would improve my skills or just stick with trails.