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Old 10-25-2014, 11:32 AM
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Default 91 cr500 what forks can I upgrade to???

     

I'm ready to purchase a new front end for my 500 (forks, triple clamp, brakes and wheel but I'm not sure what the best option would be. Here is what I found so far but I'm curious what everyone else is doing.

- 96 & up cr500 ( easiest swap but want something from a later model)
- 2000-2001 Cr250 with allballs conversion bearings.

I plan on keeping the bike a long time so I want to do it right. Can I use the newer style forks and keep the geometry correct?
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Old 10-25-2014, 07:27 PM
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JMV JMV is offline
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Best bet is 03 and newer twin chambers from CR250, CRF250 or 450. You have to do some stem swapping to use the newer clamps and swap wheels and caliper hangers. In order to get the correct geometry, you'll need to shorten the forks .5-.75 inches. I've done two of them (89 and 93) and they work awesome.
JMV
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Old 10-25-2014, 11:19 PM
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Is it as easy as pressing out the stem and putting it in the new triple clamp? When you say shorten the forks does that mean have them cut or do you just slide them up in the triple clamp .75
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Old 10-25-2014, 11:52 PM
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Yes, you swap the 500 steel stem and press it into the newer clamps. Then it will bolt right up. I have found that the newer clamps must be a bit thicker than the stock ones on the 500 so you don't get full thread engagement with the top nut. I took the top clamp to a machinist and had him counterbore the hole in the top clamp a bit so I got full engagement.
As for the shortening, I had the forks pulled all the way up to the bars and the front end still pushed in corners so I took it to Independent Race Shop here and he shortened the forks. Take the original forks and the newer forks and compare the lengths (from axle center line to the top of the fork). Then you'll know how much you'll want to shorten them. I did .5" on my 89 and .75" on my 93.
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Old 10-27-2014, 08:49 AM
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96+ CR5 stuff is by far the easy option. The 02+ twin chambers are supposed to be much nicer though. I have both to try on my 91 if/when I ever get around to completing the build...
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Old 08-18-2018, 04:23 PM
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Default 88 Cr500 fork swap

I have an 88 Cr500 and I'm wanting to swap to inverted forks. I have a set of 03 Cr125 forks, clamps, wheel, and brake system. Will it work or what do y'all suggest I use?
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