[EKhatch]

I just picked up a used 06 CRF450R and would like to use the hubs from my 09 CRF250X on it if possible. Can anyone tell me what axles and spacers I would need front and rear to use the 250X hubs on the 450R.

Thanks

[JimDirt]

The rear hub should be the same so you should be able to use the R parts , the front will need the X spacers and speedo cover and axle as far as i know , unless you get a speedo replacement spacer/cover (all it does is remove the speedo hookup sticking out but the rest of it will still be on the hub) , you do realize that the 250 rear rim itself is narrower than the 450R (the 18" to 19" does not matter) , but the width of the rim might be a issue if your going to be doing any jumping or anything serious , if your doing this for a extra set of wheels , then it might be a good idea to get a 2.15 ,18" rim to go on that X hub/spokes to hold up under the R , other than that , it should bolt up as i described

[EKhatch]

Thanks for the info. I really appreciate it. I have the front axle and spacers as well as the speedo elimination spacer.

I am setting the bike up for flat track so it is actually going to get 19" rims laced up to both hubs. Sounds like all I need are some factory rear spacers and I will be set. The bike (the 450) came with some DNA wheels (rims/hubs/spacers) and I am not very happy with the quality especially with the spacers and I have a set of practically new 250X hubs so I am just going to use those instead.

[JimDirt]

Cool , then they should work fine , on another note , i was doing some research and found that i was incorrect on the 250X rear rim width , it is the same as the 450X at 18" and 2.15 , so the extra force from the 450 would not have been a issue although the 250R rim is 1.85 , but 19" , so it would have needed to be changed .... not that it matters in your situation , but its good info to know for future reference

[EKhatch]

Good info to know for sure and the fact that you continued to do your own research and came back to post your findings shows why this is such a great community. Thanks again.