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HMF slip on

936 Views 6 Replies 5 Participants Last post by  elmerkit
Im probably going to get an HMF slip on for my 2004 400ex soon and would like to know if i have to rejet my quad when i put it on?[
1 - 3 of 7 Posts
yes, with air lid off use a 170 main jet. and if you haven't already, install a 42 pilot jet. your quad will start alot easier
if you want a red hmf slip on, I have one I took off my 400 just repacked it before I took it off
a slip-on goes on a stock head pipe, an aftermarket head pipe will be bigger than stock
1 - 3 of 7 Posts
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