hi i own a Ktm 125 sx 2003 and have been riding for 8 years. The ktm is my absalote favourate bike of them all as i have owned many 125cc´s(YZ, CR, RM, KX, TM, Husky,) and the sx is by far the quickest and most comfortable to ride. if you get one be careful of the powerband because wheelies. my bike is stock and that is quick enough. if you get one and have any questions just email me. Good luck.