I am in want of a dirt bike costing less than $2,000. (used on Craigslist) I will be using it for climbing mountains, going along frest service roads, desert riding but also doing a little jumping. MY friend recommends that i get a 4 stroke racing bike like the honda crf250r, but he really wants me to get the same bike as him, a kawasaki kdx200. i will be riding with him and his family 95 percent of the time. they have racing four strokes also. i was leaning towards a trail bike because of the lightness and electric start for stopping on the big hills. what do you think a good bike would be? Just stated looking into a bike two days ago so am willing to look into anything. If i got a trail bike how would it do going off minor jumps? t\They go riding about every other weekend often less, sometimes more, but they only change oil, oil filter, air filter, at the beginning of the season. i heard you were supposed to change it at every 600 miles max? This is my first dirt bike. i am a teenager who weighs 140lbs and am 5 11. I am still growing so i wouldn't want anything on the verge of too small.