i am looking at a few 400ex's and was wondering if there were any years too stay away from or what to look for? just basic stuff. i already know they are really great all around quads. and what would be a good deal on one? and what kind of mods could i do to it without loosing alot of reliability. thanks alot for any comments or input

 

no comments or suggestions or anything?

 

The very first run, had some soft axles.

If you can get an 05 or later, it will have reverse.

This engine responds nicely to the basic mods like opening up the airbox, aftermarket air filter, a header and muffler, and of course a rejet....with no effect on reliability.

 

i had an '05 and it was the best quad i could ask for. i never had to worry about getting stranded, and it was fast enough that my buddies couldn't just run off and leave me behind. Reverse is the best thing they ever put on them!!! Good luck.

 

what do you think id look to pay for a nice 05? and would it be worth putting a high comp piston in it, cam, and a rev box? anything else putting on it? thanks again

 

do you think 3000 is to much for a 05 400ex? looks in good cond. i am gonna go look at it, anything i should look for? thanks

 

<div class="FTQUOTE"><begin quote>Originally posted by: menthox

what do you think id look to pay for a nice 05? and would it be worth putting a high comp piston in it, cam, and a rev box? anything else putting on it? thanks again</end quote></div>

Don't mess with the internals of this engine!!! It will kill the reliability. While it made sense to mod this engine a decade ago when it was the only game in town, the best thing to do if you need more motor is to step up to a higher performance machine. A Z400 is very similar in terms of handling, and has more motor out of the box.....

 

alot of people say that they dont have problems when they mess with the engine, with a few problems with the 44o kit

 

i have a 2001 400ex it has ac nerf bars fly handle bars fx seat cover and hmf exhaust k&n air filter lid off and jet with razrs and i paid 1500 for it from a guy off of craigs list and i have had it for like 5-6 monts so far and the only problem i have had is the headlight sockets shorting out my fuse i just got new sockets for 20 bucks and i was back out on the trails!! other than that it is a badass quad!! verry fast!! i want to put the 416ex kit in it tho...

 

I know how good i talked about the 05 EX, but now that someone else mentions it the Z400 Suzuki is a much faster quad they come stock with fairly high compression, and they have reverse, and they are water cooled where the EX is air cooled. There reliability is quite close to the Honda also, my friend beat the sh** out of his Z400 and never had the first problem.