Maintenance & Technical > KX500 Original

Front disc bolt pattern?

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Tumbleweed:
I recently got some forks off ebay for my '91 kx 500 (my current tubes are smashed and dented). The auction said they were from a '90 kx 500, I looked up all the parts on buykawasaki.com and everything matched.

When they arrived I noticed they were from a newer bike, (the bottom tubes were twisted in the picture so I didn't notice they had the 3 bolt holes for the newer style fork protectors.

They do bolt onto my triple clamps but now the caliper is mounted much higher. so a larger disc is needed. Anyone know if I can just buy the newer large disc and bolt it on? or would I have to change the hub too?  :|

MadKaw:
not sure on this one. I've changed front discs from several bikes and they were all interchangable. from a 01 KX250, 99 KX250, 89KX250 and 93 kx500 were all the same size disc. its possible he had that done for the bigger disc upgrade from Braking or Galfer.

Tumbleweed:
sounds promising, thanks!

demographic:
When I was getting the supermoto setup for mine I found that the discs were the same four hole patern for 90 on but the caliper relocation brackets that were avaliable only fitted 92(ish) and later bikes.

I assume that means that the brake calipers changed.
You might have to get the newer brake caliper to match the forks?

Just as a matter of interest what colour are the forks? my 90 ones are anodised gold, the 91-93 ones were anodised blue then after that they went a nasty shade of purple for a while then silver.

You can also work out the years by the slider fork diameters 90= 41mm, 91-93 id 43mm and then I don't know when it changes again but it goes through 45mm as well maybe another size also.

Tumbleweed:

--- Quote from: demographic on August 20, 2007, 10:15:48 AM ---When I was getting the supermoto setup for mine I found that the discs were the same four hole patern for 90 on but the caliper relocation brackets that were avaliable only fitted 92(ish) and later bikes.

I assume that means that the brake calipers changed.
You might have to get the newer brake caliper to match the forks?

Just as a matter of interest what colour are the forks? my 90 ones are anodised gold, the 91-93 ones were anodised blue then after that they went a nasty shade of purple for a while then silver.

You can also work out the years by the slider fork diameters 90= 41mm, 91-93 id 43mm and then I don't know when it changes again but it goes through 45mm as well maybe another size also.

--- End quote ---

The forks look a little silver but may have a slight gold tinge, my current forks are blue. I don't have a camera at the moment but I found a picture on the web that shows the differences I'm talking about.



My current fork guards and I think the '90 fork guards are flat and don't have a mount for the fork guards that curve around the side, and the caliper bolts up closer to the fork leg. The forks I got have a longer top mount (I think these models came with the floating brake, with a larger disc) I am getting a caliper from a '96 model off ebay, and I'm crossing my fingers that it will work. If that goes as planned  :-o ... The disc will be the last piece of the puzzle.

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