Hi all i'm new to this forum and new ish to off road bikes although i do have a couple of nice road bikes (eg nsr250, 06 zx10,z50r, and now a wr450) so does anyone know what exhaust i can fit to my 03 wr450? it has standard exhaust front to back and weighs about 80% of the bikes weight,and im wanting to to fit something better looking and lighter, so what year do the exhaust change over, i asume 2001 to 2006 are the same exhaust as they have steel frame, would a 2007 exhaust fit? what about the yzf what year would fit? would a wr or yzf 250 fit? a couple of appologies. 1st for my rubbish spelling, 2nd incase iv'e posted in the wrong area, 3rd for asking so muh on my first visit, any help would be great thanks in advance.