[400EX swingarm on a 450R!] - ATV Riders Forums - Honda, Yamaha, Suzuki, Kawasaki, Polaris, CanAm, Arctic Cat, Kymco ATVs

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400EX swingarm on a 450R!
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Posted by: Varmit57

Just bolted on my 400EX Leager extended swing arm on to my 450R!!!

The 400ex rear shock will not work, the resivor hits the trany.

I had to space the rear sprocket over to line up the chain but the rest of it works fine. I'll get some pictures tomorrow after I clean it up.

Posted by: ELANSS

Varmit57-Sounds good!! Did you put the stock rear axle back in? Do you think if a person puts a 400ex lonestar swingarm with a lonestar 450r axle and stock 450r carrier I would have to do any shimming or modifying to my 450r.

Posted by: Varmit57

I'm using a lonestar 250R extended axle with a lonestar bearing carrier.

I like the 250r Axle for the strong hubs that they have...

I had sold my break caliper, so I had to user the 450R break mount, caliper, rotor and spindle.

Then I built a new axle lock nut becuse the stock one would not reach the 250r keeper.

I'll get some pics tonight after work...

Posted by: ELANSS

Any pics yet??

Posted by: Varmit57

Here are the Pic's
http://www.rocky-hill.net/Gallery/Motocross/Joe450R/Joe450R12.jpg

http://www.rocky-hill.net/Gallery/Motocross/Joe450R/400EXswingarm1.jpg
http://www.rocky-hill.net/Gallery/Motocross/Joe450R/400EXswingarm2.jpg
http://www.rocky-hill.net/Gallery/Motocross/Joe450R/400EXswingarm3.jpg

Posted by: holeshot19

damn thats nasty!

Posted by: Tommy 17

did it change the linkage angles at all???? if it did the rear shock will suck arse

Posted by: Varmit57

quote:
Originally posted by holeshot19
damn thats nasty!

Yeah it needs it, the axle has grease all over it and the chain had been soaking in oil since I parted out my 400EX last fall. The first ride got it everywhere!

quote:
Originally posted by Tommy 17
did it change the linkage angles at all???? if it did the rear shock will suck arse

I used the shock and front part of the linkage from the R and the back part from the 400EX. seems to work good. I laid the two side by side and they are almost identical so it should be fine...

Posted by: howboutchaw

Great info man!

If you use an aftermarket 400 EX swingarm, bearing carrier, and extended axle will the 450R's brake rotor and caliper mount still work?

Anyhow, I think the R looks a helluva lot meaner with the +1.25.

One more question, if you use the bearing carrier out of the EX and the EX axle does the chain line up?

Posted by: mxracer111

i know the 450r and 400ex axles are a bit different... and the carriers are different as well... the 450r carrier is approx 1/2 incn narrower than the 400ex carrier.

Posted by: SnellCRP

What did you use to space the sprocket over and how much did you have to space it? Did you have to use the 450r linkage with the EX shock or 450r shock?

Posted by: Varmit57

quote:
Originally posted by SnellCRP
What did you use to space the sprocket over and how much did you have to space it?

I used a old sprocket and just took the outer edge off of it. It had to be over about a 1/4 of a inch so the old sprocket worked good.

quote:
Originally posted by SnellCRP
Did you have to use the 450r linkage with the EX shock or 450r shock?

I used the front half of the 450r and the back of the 400ex. They are almost identical exept where it bolt's on to the swing arm the 450R is a bit wide.

Seems to work, can't wait to try it on the track...