Maintenance & Technical > KX500 Original
Front disc bolt pattern?
demographic:
I know what you mean about the 90 ones having the flat guard and the later ones wrap around.
Do you have a vernier caliper to measure the diameter of the slider? That will give you some idea of the year that the forks were produced for.
Tumbleweed:
--- Quote from: demographic on August 21, 2007, 08:36:52 AM ---I know what you mean about the 90 ones having the flat guard and the later ones wrap around.
Do you have a vernier caliper to measure the diameter of the slider? That will give you some idea of the year that the forks were produced for.
--- End quote ---
I don't have a caliper, but I have one of those soft tape measures. I'll measure it in inches and try converting that to mm.
demographic:
If you use one of those soft tapes I assume that you will get the circumferance, you need to know the diameter if the tube so you know what year its off.
You need to devide the circumferance by Pi
By the way, I am pleased that it fits the triple clamps cos that means that I can use newer forks in my 90, that makes getting spares simpler for me.
As your 91 bike will have the 43mm forks the newer forks should be (as far as I remember and I have not checked) either 45mm or 48mm.
Don't forget that you should always check this info out as my knowledge gets kind of hazy at about 1990 cos thats what year my bike is.
Regards Scott.
cyclepsych0:
Hi there,
I'm hoping to help you out in atleast identifying the year of your forks.....
Off the top of my head, I would guess you have forks from a '94-'96. '94 was the first year they had the wrap around protectors and they were still 43mm like your stock '91 blue forks up to '96. (This would explain why they fit in your '91 triples.)
'94 was the 1st year they stopped the blue anodizing and went back to a goldish color, and '95/'96 are basically the same fork as '94.
'97 is when they made the jump to 46mm. (Which I believe would NOT fit your clamps due to an increased size in outside diameter of the upper tubes.)
Nick
cyclepsych0:
After some quick research, I found that EBC brakes lists the same part # for front rotors for all 500's from '89 - '04. This would indicate they are all the same physical size rotor in these years.
While I was at it, I checked the part # for their oversize rotor kit and found the # is the same for 500's from '94 - '04. ('93 and earlier kits aren't offered). To me, this says the adapter bracket included for the caliper is the same for these years. Which means the calipers' bolt pattern is also the same from '94 - '04, but it's different for '89 - '93 or else this kit would work on those years as well.
I'm almost positive the '96 caliper you're getting will fix your issue as long as the brake line mounting/routing hasn't changed. (Fingers crossed).
Let us know how it goes!!
Nick
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