What year/model forks for CR/USD swap for XR?


38 replies to this topic
  • Coolidge

Posted September 21, 2007 - 02:05 PM

#1

Was thinking of doing this swap (eventually). Question is. what year(s)/model(s) CR forks are best for doing the CR fork to XR swap?
Thanks in advance ~Guy

  • martinfan30

Posted September 21, 2007 - 02:07 PM

#2

i dont have an answer, try and post in SM. im curious also.

  • weskc35k

Posted September 21, 2007 - 03:06 PM

#3

The Showa twin chamber are the most popular and the later the better.

  • Rockjockey

Posted September 21, 2007 - 03:19 PM

#4

The Showa twin chambered forks have been the same since 2001 or 2002 with only the valving and springs changing through these years. If you plan on re springing and revalving I would say any of these up to current would serve your purpose. Condition of the product would be more of a concern. I used 2004 forks for my 440 and 2002 forks for my 650L Showa's of course.

  • Coolidge

Posted September 21, 2007 - 03:38 PM

#5

:thumbsup: Thanks much for the info.
~Guy

  • jesusgatos

Posted September 21, 2007 - 05:05 PM

#6

It's '02 and up. I indexed all of the related threads on this topic that I could find in the first post of this thread.

  • xr650l bum

Posted September 21, 2007 - 06:42 PM

#7

What cr? 125 250 crf 450 500?

  • weskc35k

Posted September 21, 2007 - 08:33 PM

#8

CRF 450 is probably the best swap as it's 4 stroke to 4stroke,the valving/springs may be closer than the smokers.
The 2 strokes have had twin chamber forks since 97.

  • jesusgatos

Posted September 22, 2007 - 09:23 PM

#9

CRF450 forks are freakin STIFF. I've got a set on my 650 right now and I had to respring them. It's would take a pretty big guy to get those stock .47 springs movin'.

  • weskc35k

Posted September 24, 2007 - 01:37 AM

#10

My first order of business is to get .48 springs on my Honda's.

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  • Coolidge

Posted September 24, 2007 - 01:46 PM

#11

Im 150 lbs and (only) 5'-7". Would CRF 250 forks be better suited than CRF450? BTW, Thanks for the info everyone. Good stuff
~Guy

  • weskc35k

Posted September 24, 2007 - 11:39 PM

#12

remember the swap is to a much heavier bike.

  • Rockjockey

Posted September 25, 2007 - 03:25 AM

#13

Im 150 lbs and (only) 5'-7". Would CRF 250 forks be better suited than CRF450? BTW, Thanks for the info everyone. Good stuff
~Guy


The CRF 250 forks come with .45 or .46 springs depending on year.

  • kheff46

Posted September 25, 2007 - 10:09 AM

#14

are the steering angles of the XR's in the thread of USD CR forks listed the same as an older XL600? i have no manuals or previous experience with XR 600 geometry in general.

i have a 1986 XL600R and am hoping to do CR500/250 forks, front brake, rotor, etc and a newer XR650R engine for starters.

thanks!

--keith

  • jesusgatos

Posted September 25, 2007 - 03:14 PM

#15

CRF250X forks have .42 springs in them.

  • Coolidge

Posted October 09, 2007 - 08:21 AM

#16

...There seem to be many more 96-97 CR frt ends avail. Would a 96-97 CR fork swap be worth the effort? I see Emig racing has a stem avail and a kit. What all would be involved in actual swap on my 97 XR600R if I use the 96-97 CR250 or CR500 frt end? (Dont wanna get buried in a project if I should have started off w/2002+up forks...)
Thanks again

  • Rockjockey

Posted October 09, 2007 - 08:57 AM

#17

I would recommend you get the latest technology you can afford if for no other reason than the wear factor.

  • Coolidge

Posted October 09, 2007 - 09:27 AM

#18

Thanks. Thats kind of what I was talking about. The 'earlier' forks are obviously more plentiful/cheaper. If the the 'physical' swap is the same between early/late, with advantage going to later forks, I think I will keep an eye for the 02-up forks???

  • MindBlower

Posted October 09, 2007 - 09:34 AM

#19

CRF450 forks are freakin STIFF. I've got a set on my 650 right now and I had to respring them. It's would take a pretty big guy to get those stock .47 springs movin'.


What did you do with those stock .47 springs?? :confused:

  • CDRETZKA

Posted October 09, 2007 - 05:05 PM

#20

Are you saying that CR 450 forks will bolt up to XR?





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