Had one of these in the shed as soon as they come out , the 450 a great bike , feels light to ride handles really well and is fast , we put a fmf pipe and save 3 lbs of weight and a bit more power , suspension is good but we made it better by gold valving it , as for speed we race this bike against my to slightly modded k5 and was equal with the slower one I think it would beat a std k5 , as we had a stock k5 of a friend of mine over and it was slow compared to the modified ones the 16 kxf still wear chain guides out fast like the older models do so a tm design one is a must , as for the 250f 16 they hardly looked at it but expect big things for 17 model.
