The Honda CRF150F is a great dirtbike, designed more for trail riding and fun than for motocross racing. The Honda CRF150F makes enough power for fun in the dirt, and it is very easy and cheap to maintain, and because it isn’t a racing engine, it will run forever. The engine is overbuilt and under-stressed, and very reliable, which makes the Honda CRF150F great for long trail rides. The 2.1 gallon tank will give you 100 miles of range, which is plenty for a day of fun in the dirt.
The CRF150F makes close to 12 horsepower, a top speed over 50 mph, and a 32-inch seat height, which means it is big enough and strong enough to be a great dirtbike for a full-grown adult as well as a teenage kid.