[400EX Front Hub Conversion, Help!!] - ATV Riders Forums - Honda, Yamaha, Suzuki, Kawasaki, Polaris, CanAm, Arctic Cat, Kymco ATVs

Pages:1

400EX Front Hub Conversion, Help!!
(Click here to view the original thread with full colors/images)

Posted by: bushwesl

I picked up the parts required to complete the 400EX front spindle and 250R caliper conversion, or so I thought... I bought what I was told was a set of 400EX spindles, hubs, and rotors, and then I also bought a set of PRP 250R brake caliper adaptors. The thing is, the adaptors don't line up with the holes on the spindles. Are there different year 400EX spindles? Different year adaptors?

Here are some pics of the spindles, hubs, and rotors that I bought.

http://i26.tinypic.com/dn11eg.jpg

http://i32.tinypic.com/hwh26c.jpg

http://i31.tinypic.com/4lps91.jpg

Here is a pic of the adaptor.

http://i32.tinypic.com/xm35hc.jpg

Here are some pics trying to show how the bolt holes don't line up.

http://i30.tinypic.com/xb06ye.jpg

http://i31.tinypic.com/25812yb.jpg

http://i25.tinypic.com/awyzpy.jpg

Here is a pic of the setup that was advertised by the seller of the adaptors with his 400EX hubs.

http://i27.tinypic.com/29z62kk.jpg

Any help here with this would be greatly appreciated. Or else I just wasted a bunch of money...

Posted by: bushwesl

After looking at these pictures, these do not appear to be 400EX spindles...

Ugh... now what?

Posted by: pdxbigfoot

450R spindles??. Im running 400ex front end BUT im using the 400ex calipers so it all matched. Bummer...those are nice spindles.....J

Posted by: bushwesl

Hmm... They could be. Can anyone confirm what these spindles are off from?

I don't know 450R's very well, but it seems like I remember hearing that they changed something with the spindle setup from the earlier years to the later years. Can anyone identify which year they're from if they are in fact 450R?

Posted by: TheNewn

I was looking into the 450R front end on a 250R and what not, and from what i've seen online the rebuild kits for the front calipers on the 250/450 are the same. I was leading myself from what i found that the 250R calipers will work on 450R spindles. Although i cant be sure.

hope it works out for you

Posted by: Rich250RRacer

quote:
Originally posted by pdxbigfoot
450R spindles??. Im running 400ex front end BUT im using the 400ex calipers so it all matched. Bummer...those are nice spindles.....J

If you look at the spindles you have closely, you'll see they have the casting "HP1" on them. This is the Honda product code for a 450R. A 400EX spindle should have "HN1" on it.

Posted by: Rich250RRacer

After looking even closer, those are from an 04-05 450R. Something else to keep in mind, 400EX hubs will NOT work on those spindles, the backspacing on the hub is incorrect. In fact if anyone is considering swapping over to a 450R front brake system, the hubs and spindles must match. 04-05 will not work on 06 and newer and vice-versa.

Posted by: MossboysRacing

Rich250r is right. In 06, Honda changed the spindles, hubs, and upper a-arms on the 450r. You have to use 04/05parts or 06-newer together. To answer the other question, 450r calipers will not fit the 250r spindle. The Rotors are a differend diamater (I think) and the two bolt holes are off by about 3/8". I thought the same thing, so my brother and i took off his calipers and treid to put it on my spare 89 spindles, its close but it wont work.

Posted by: Rich250RRacer

quote:
Originally posted by TheNewn
I was looking into the 450R front end on a 250R and what not, and from what i've seen online the rebuild kits for the front calipers on the 250/450 are the same. I was leading myself from what i found that the 250R calipers will work on 450R spindles. Although i cant be sure.

hope it works out for you

I have a complete 04-05 450R setup on my '03 Lonestar, I don't know if I would do it again. I can't get enough camber adjustment in it without binding the ball joints. I ride it and race it as it is, but you can see the tops of the tires leaning out slightly. I have Lonestar arms, maybe another brand would be better. I've even tried an '06 and newer setup, and it's even worse.

Posted by: matt250r21

If any one is looking for a good set of 400EX spindles and hubs I have some for sale.

Posted by: bushwesl

quote:
Originally posted by Rich250RRacer
I have a complete 04-05 450R setup on my '03 Lonestar, I don't know if I would do it again. I can't get enough camber adjustment in it without binding the ball joints. I ride it and race it as it is, but you can see the tops of the tires leaning out slightly. I have Lonestar arms, maybe another brand would be better. I've even tried an '06 and newer setup, and it's even worse.

What type of arms did you have the 450R setup on? I'm in the process of building a MX LSR chassis 250R. I'm using the LSR DC-4's, hopefully they will work

Posted by: Rich250RRacer

quote:
Originally posted by bushwesl
What type of arms did you have the 450R setup on? I'm in the process of building a MX LSR chassis 250R. I'm using the LSR DC-4's, hopefully they will work

They are Lonestar arms on a Lonestar chassis. There's no problem with the arms fitting, the problem is using the 450R spindles where 250R spindles are supposed to go.