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quadrider11
10-07-2006, 07:35 PM
ok my friend has a 2005 400ex and he wants to know what the best full system is.
jrm03
10-07-2006, 07:38 PM
search button will return a lot of results on this one. HMF is popular , and my personal choice
pudamac12
10-08-2006, 12:07 PM
i have friends with similiar modded 400's and the best seat of the pants pipe has to be white bros. My buddy has a hmf also and it doesn't feel as impressive as the white bros. I would look into that.