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View Full Version : 250r front end on 400ex


hotrodbelair
10-02-2005, 07:47 PM
i was gonna buy a whole new front end for my ex once i got a frame but i got a friend that is selling ohlins shocks and plus2 aarms for realy cheap but there off of a 250r will it work and would it work good or would it effect the handleing in a bad way
mikeboone
10-02-2005, 08:46 PM
Originally posted by hotrodbelair
i was gonna buy a whole new front end for my ex once i got a frame but i got a friend that is selling ohlins shocks and plus2 aarms for realy cheap but there off of a 250r will it work and would it work good or would it effect the handleing in a bad way

It may fit but you are better off with the 400 parts; they are lighter than the R's steel hubs and spindles.

I built a 88 330R over the winter and used complete 400ex frontend--a arms, spindles, hubs, tie rods,etc
TBD
10-03-2005, 07:55 AM
Originally posted by hotrodbelair
i was gonna buy a whole new front end for my ex once i got a frame but i got a friend that is selling ohlins shocks and plus2 aarms for realy cheap but there off of a 250r will it work and would it work good or would it effect the handleing in a bad way
The geometry is basically the same so they would work fine except for the extra wieght and the difference in the a-arm mounts on the frame. TRX250 mount width is 2.050" and the 400EX is 1.732".
hotrodbelair
10-03-2005, 11:27 AM
ok thanks i was gonna buy a whole new front end for it this winter but friend of mine is selling a complete front end off of his r for around 400. but i think im probaly gonna get a whole new front end
hotrodbelair
10-03-2005, 11:34 AM
oh yea its got aftermarket spindles on it to would it sill be heavier than mine stock. and if i do buy this it aint gonna be untill this winter cause hes rebuilding his too so i got plenty of time to make up my mind and save money. if your saying it will work fine except the extra weight i might do it. and u saide the mounts are different sizes does that mean i half to make new mounts or what.
smr
10-03-2005, 11:44 AM
No you have to grind the a-arms to make them fit.
TBD
10-03-2005, 12:07 PM
Originally posted by smr
No you have to grind the a-arms to make them fit.
He is totally right. I was thinking you were putting 400 arms on a 250R. Depending on what brand they are you will have to really modify them like he said.
10-03-2005, 02:11 PM
the shocks r susposed to fit and would lower u 2 inches on a 400ex
hotrodbelair
10-03-2005, 03:29 PM
there lonestar aarms with ohlins shock tripple rate shocks the shocks would bolt right up wouldnt they would i half to have them adjusted for the wait for the ex i weigh 130 lbs and there set for a 150 lb rider on the 250r
smr
10-04-2005, 06:02 AM
The only thing you would have to do is grind the a-arms so they will fit into the 400 frame.
hotrodbelair
10-04-2005, 11:43 AM
and doin this they will work fine if done right. except them being heavier right.