I did the same as Jwar1r1t3. Went from a modified XR280 to an 03 WR450. The Wr felt much lighter in the turns than the XR except in the real tight stuff. The height can be a problem unless you are 6ft 6ins tall! You always end up with the weight leaning towards the drop side of an uneven trail. I did the starter mods as advertised and fitted a rekluse clutch to overcome some of the tight turns issues. The clutch makes a lot of difference but its no substitute for a lighter lower ride. Unfortunately the bike is still in Turkey and I am now in Fl trying to decide wether to ship it here or buy another!