Bman

Well other arm installed easy. Steers and rides good. No popping or binding. I can tell it's made a decent difference. Before this thing would get hung up just unloading from the trailer on its foot pegs cause of how low it sat. I need to re align it. I replaced inner tie rod ends (not fun when those let go while riding) before and it was out of align and the lift made it a bit worse. Seems to ride better though I didn't put it through any major obstacles. Just took down to the creek and back. And I know the rear looks crooked it's just where at some points the bolts fell out of that side of the rack and it's letting the rack and body sit that way. My father in law who owned this before me beat this atv, rolled it I don't know how many times. It's had it rough. So at this point would doing the shock swap (stock rears to front and buy 450 rears) net any more lift? Or just stiffer suspension? I mean really I'm a heavy guy 250 easy. And it's a bit soft for my weight. I also plan to go to 26s. Got 24s now and this thing is ridiculously low geared. Could ride in 5th just putting along no prob even with my weight.

Just got the other in today and will install it later and see how she lookes. Once I make sure everything works good and yard ride it I'll order some ball joints. Wheel bearings. And the disc brake conversion. Possibly new cv axles. Now I've heard you can run 450 cvs in a 400 but not the other way around?

Well the only reason I'm doing this lift is because it rode so low it would hang up all the time. Though it's possible it had the arms and cvs and no one ever put on the shocks? I actually just put a 450 rear end in it as the original stripped the ring gear splines. This 450 rear end isn't far from doing the same thing but I assembled it with fresh bearings and seals and welded the axle to the ring gear. Figured once they break I'll just end up replacing both anyway.

I imagine its similar? Thought the 450s have different arms, axles, ball joints, and i think different drive shafts if im not mistaken. though i believe the diffs can be interchanged.

Looks to both be factory welds. if you scroll ebay for upper a arms for a 400 foreman in my opinion you'll see more of the ones with more angle to the ball joint pad. but the ones like what i took off the machine are on there as well just not as many. like i say the extra angle lets the suspension travel down more. i thought it was a 450 arm, but its not really longer like people say it should be.

I'm not the original owner of my machine. And that's what has me confused. Both arms seem to be the same length. Only difference being the angle where the ball joint is. Ball joints best I can tell are the same size. And I know they are quite expensive that's why Im buying them from ebay. They range 15-35$ on there. I also noticed on a honda parts website the upper a arm had two previous part numbers that had been replaced by the current one. Revisions? Wasn't sure if the 400s had different arms through the years.

Had to replace an right upper A arm recently on my 98 400 while installing a lift. The replacement arm came off a 96. Though i read they interchange from 95-03. Noticed the upper a arms on my machine have a completely different angle at the ball joint then the one I ordered. My machine the angle is almost parallel and the 96 A arm is at a much sharper angle. Got some pics to show what i mean. I know with the A arms on my machine i couldn't get the shock back on the machine with the lift brackets installed, however with the other A arm installed I was able to assemble it quite easily and its a noticeable difference in how much the A arm allows the suspension to droop. ive got a picture with the right side installed and you can see what i mean. Any reason for this difference in design? Went ahead and ordered the left side upper from the seller as well and plan on swapping the left side as well as it seems to fit and function better with the lift.