By yzfrider434, 21 June, 2010 i recently purchased a 2003 yz450 what would be some good upgrades? '03 yz450f you should get a pipe on it exhaust i reccommend a fmf fatty pipe. thats what i got on mt yz250. i love it exaust the fatty is a two stroke pipe i had one on my 99 yz250 but thanx '03 yz450f i just put a fmf Q2 pipe on it and i think ima put the megabomb header on it
'03 yz450f
you should get a pipe on it
exhaust
i reccommend a fmf fatty pipe. thats what i got on mt yz250. i love it
exaust
the fatty is a two stroke pipe i had one on my 99 yz250 but thanx
'03 yz450f
i just put a fmf Q2 pipe on it and i think ima put the megabomb header on it