whell then your options are yamaha ttr90/ttr125, honda crf80/crf100/crf150, suzuki drz110/drz125, or kawasaki klx110/klx125/and they know make a klx140 but there really new so they would probably be worth alot of $$$$.
oh and theres crf50 and ttr50 if you want to go that small/mini