XR600 CRF450 Fork Swap

Hey all, just finished up a CRF450 fork swap on my 95 xr600 and wanted to share my results and build with everybody in case anybody is looking to do this and needs some inspiration. This is my second xr600 in my 23 years and I love these pigs. Project started when I traded an xr120 build of mine for a project 02 crf450 kx500 swap that was complete but needed a frame repair. Sent it to a conversion specialist and after 5 months of waiting and 500 bucks he told me he couldn't fix the frame and I was frustrated so I cancelled the build. Had no luck liquidating the chassis so decided I wanted those forks on the 600 rather then let them lay. Not wanting to pay almost 200 bucks for a conversion stem, I disassembled both front ends and hit the crf triples and XR steering stem with a micrometer and ordered myself some bushings to fit the XR stem in crf triples. It was really as simple as that. Pressed bushings into both crf triples and "machined" lower bushing to retain press fit of the steering stem. I also took a 9/16 tap and threaded the existing hole in the stem on the bottom end, that way I could throw a retainer bolt with a large flat washer in to hold the stem in the lower triple in case my press fit were loosen up and fail. Finished that with new stem bearings and races and turned out pretty nice! Less the crf forks, I only have about 25 bucks in the swap as I ordered 4 of both bushings in case I had to use some trial and error. This method required to modifications to OEM parts on either bike it can all be switched right back. I am sure there are better ways to go about swap, but I'm just a young snot nosed punk and I'm pleased with my results and wished share. imageproxy.php?img=&key=b3312acf975e3c54If anybody would like the bushing diameters or wishes to critique my method please feel free.imageproxy.php?img=&key=b3312acf975e3c54

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Edited by mripka2
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First two pics aren't visible on my phone but good work! Where did you order the bushings from?

9 hours ago, Backwoods-Bomber said:

First two pics aren't visible on my phone but good work! Where did you order the bushings from?

I got them from ASBBearings.com 

4 x ZU MB2420ZU (24x27x20mm) 
4 x ZU MB2820ZU (28x32x20mm)

Sweet! I couldn't see the first pics either.
But good for you! Great ingenuity! You make it sound easy.
Give us a ride report after its been beaten in.

17 hours ago, mripka2 said:

Hey all, just finished up a CRF450 fork swap on my 95 xr600 and wanted to share my results and build with everybody in case anybody is looking to do this and needs some inspiration. This is my second xr600 in my 23 years and I love these pigs. Project started when I traded an xr120 build of mine for a project 02 crf450 kx500 swap that was complete but needed a frame repair. Sent it to a conversion specialist and after 5 months of waiting and 500 bucks he told me he couldn't fix the frame and I was frustrated so I cancelled the build. Had no luck liquidating the chassis so decided I wanted those forks on the 600 rather then let them lay. Not wanting to pay almost 200 bucks for a conversion stem, I disassembled both front ends and hit the crf triples and XR steering stem with a micrometer and ordered myself some bushings to fit the XR stem in crf triples. It was really as simple as that. Pressed bushings into both crf triples and "machined" lower bushing to retain press fit of the steering stem. I also took a 9/16 tap and threaded the existing hole in the stem on the bottom end, that way I could throw a retainer bolt with a large flat washer in to hold the stem in the lower triple in case my press fit were loosen up and fail. Finished that with new stem bearings and races and turned out pretty nice! Less the crf forks, I only have about 25 bucks in the swap as I ordered 4 of both bushings in case I had to use some trial and error. This method required to modifications to OEM parts on either bike it can all be switched right back. I am sure there are better ways to go about swap, but I'm just a young snot nosed punk and I'm pleased with my results and wished share. imageproxy.php?img=&key=b3312acf975e3c54If anybody would like the bushing diameters or wishes to critique my method please feel free.imageproxy.php?img=&key=b3312acf975e3c54

IMG_20171108_173923675_HDR.jpg

IMG_20171109_190420610.jpg

IMG_20171109_190506567.jpg

What rear fender is that? I like it.

51 minutes ago, ricky racer said:

What rear fender is that? I like it.

It's an acerbis fender I'm not sure if it's styled after the 02 450 or not but that's what it came off of 

48 minutes ago, mripka2 said:

It's an acerbis fender I'm not sure if it's styled after the 02 450 or not but that's what it came off of 

Easy to make fit or pain in the ars? My 628 would look way better with a mx fender :) 

2 minutes ago, ricky racer said:

Easy to make fit or pain in the ars? My 628 would look way better with a mx fender :) 

Oh hell man it bolts right on believe it or not, I did absolutely nothing to make it fit lol 

18 hours ago, mripka2 said:

Oh hell man it bolts right on believe it or not, I did absolutely nothing to make it fit lol 

Hey sorry Ricky I had a tremendous brain fart there, I never tried the crf fender on XR forks I only put it back on the crf forks once they were on. If I get around to it I'll pop it off and see if it jives with the xr for ya

29 minutes ago, mripka2 said:

Hey sorry Ricky I had a tremendous brain fart there, I never tried the crf fender on XR forks I only put it back on the crf forks once they were on. If I get around to it I'll pop it off and see if it jives with the xr for ya

The rear fender is what I was inquiring about ;)

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