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400ex parts fit on 300ex???
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Posted by: heatatvracing

ive been told by a couple of people that 400ex parts will fit on a 300ex, meaning axle, a-arms, swingarms,etc. is this true??

Posted by: hondardr4life

The a arms will, the axle wont. The swinger might, uhh shocks will fit with a relocator bracket, the plastics will with somne mods.

Posted by: 300ex73

The swingarm won't, at least not without major modification. The 400 swingarm has a linkage for the rear shock and the 300 does not, so you would have to weld on a linkage mount to your frame, and then find a linkage to work, then have a custom shock built specifically for that setup. The swingarm is also wider. If I rememeber correctly, the axle carrier is about 2 inches wider than the 300's, so you would have some serious chain alignment issues.

I also don't recommend doing the 400 a-arms on a 300. Some people will say that it works, others will tell you that it doesn't. Ask roostin_dale, he'll tell you what he thought of the setup.

Your best bet is prolly to get a set of good +2 or +3 300EX control arms, find a relocator bracket, and throw on a set of 16.25 through 16.75 inch shocks(i.e. stock length 400EX, 250R, 450R, Z400, or YFZ 450). Any of those would bolt up. But a good idea for saving some cash in the long run would be to get the 450R, YFZ450, or '05 style Z400 shocks. Since those are rebuildable, you could have them resprung and revalved for your setup and save some cash as opposed buying a set of aftermarket shocks.

A good one for the rear, if you can find one since they are getting pretty rare now, is the 2001 660 Raptor rear shock. Only the 2001 will fit, and it would be a good idea to have it rebuilt, and have them replace the reservoir hose with a 250R type hose(the longer length of hose will give you more mounting options).

You can find basically all of the stuff I have mentioned on EBay for pretty fair prices. You could also take a look through the For Sale forum.

Posted by: 99_300ex

300ex73 knows his stuff...
Jeremy

Posted by: Cody_300ex

The 400ex swinger is a simple mod really, I helped my friend do it. The chain was a little off so we just shimmed it as much to the right as we could. We made deffiant sure that the linkage mount that he welded on was center and at the right degree.

Posted by: reconmaster

like as long as you you do the right stuff the 400 front end will fit and work great i had it on thee weakest setting for front took 60+flat land at a mx race 2 get them 2 bottem now i run a notch higher
like the front end is great if you want 2 save moeny and whatnot just got 2 get some1 whos an exclellnt fabricator and nows how 2 align as well 30073 brought up some good points 2

Posted by: Cody_300ex

quote:
Originally posted by reconmaster
like as long as you you do the right stuff the 400 front end will fit and work great i had it on thee weakest setting for front took 60+flat land at a mx race 2 get them 2 bottem now i run a notch higher
like the front end is great if you want 2 save moeny and whatnot just got 2 get some1 whos an exclellnt fabricator and nows how 2 align as well 30073 brought up some good points 2

Learn how to spell man, I couldn't hardly read your post.

Posted by: Danzanzio

will an fmf pipe for a 300ex fit on a 400ex?

Posted by: Justin#38

will the 400ex a-arms litterally just fit right on or will there have to be mods done

and can you use 300 spindles or will you have to use 400ex spindles

Posted by: bwamos

quote:
Originally posted by Danzanzio
will an fmf pipe for a 300ex fit on a 400ex?

no.

different header systems.

Posted by: honda300EXtreme

quote:
Originally posted by Justin#38
will the 400ex a-arms litterally just fit right on or will there have to be mods done

and can you use 300 spindles or will you have to use 400ex spindles

yes the 400ex front end bolts right up except the shock which require the relocater bracket, but yes you should use 400ex spindles.
i just started doing it to my bike

Posted by: drag93ex

i used 400ex a-arms and spindles on my 300, never had a problem. you will have to use relocator bracket for shocks like said above.

the toolbox from a 400 will fit a 300

Posted by: honda300EXtreme

so will the carb, handle bars, andi think the steering stem

Posted by: Blue250X

Valve stem caps interchange

So do the rims off of a 400, 450, and the 250x's as long as they arent the 87's. When I put 400ex a arms on my 250, I had to put some washers inbetween the arm and mounts so they didnt slide forward and back while riding.