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Performance ATV Mods Discussion of ATV Performance Modifications.

 
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post #1 of (permalink) Old 11-09-2001, 08:48 AM
**DONOTDELETE**
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400ex

How many of you have a yellow ex?

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post #2 of (permalink) Old 03-31-2007, 09:05 PM
mp6096
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i

yep yellow 2005 400ex

K&N, Jet Kit, Yoshimura pro series full exhaust, x5 handle bars, fat nerf bars, hydraulic clutch (best purchase ever), custom 400ex tail light ..... GORGEOUS BIKE!!!!
post #3 of (permalink) Old 07-13-2008, 02:15 PM
jonesy72
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i was thinking of getting a Yoshimura pro series full exhaust for my 400 ex and i was wondering wat jetting u recommend
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post #4 of (permalink) Old 10-02-2008, 03:41 PM
 
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depending on the temp i recomend between a 160 to 170 (with air lid removed and stock or any foam filter)and a 40 to 42.5 pilot

i have found k&n filters are horrible for quads and any motorcycle that runs a foam filter stock
the stock breaths much better than the K&N

now K&Ns are 100% better than ANY paoper filterm (as many polaris have) but when it comes to foam K&N just dont compare

now this is all in my opinion
if K&N work better for you, then great =)

Last edited by Mr_RPM; 12-17-2008 at 04:30 PM.
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