Fork Spec's

[alan]

Please set me straight on KX500 Fork sizes! My Clymer says that the forks are the same from 1990 to 2004 and that is just dead wrong! My 2001 has 46mm and my 94 that I am parting out has 43mm. So when did the changes take place? What years KX250's would be compatible with the 94 Blue anodized forks?

Thanks Alan

[hughes]

I would beat that 92,93,94 kx250 fork are interchangable with the 92,93,94 kx500. For the most part the 90-04 fork are the same, but around the 97 time frame I think the fork dia. increased to the 46mm that you have on your your 01. You are measuring the upper tube right?

[demographic]

Please set me straight on KX500 Fork sizes! My Clymer says that the forks are the same from 1990 to 2004 and that is just dead wrong! My 2001 has 46mm and my 94 that I am parting out has 43mm. So when did the changes take place? What years KX250's would be compatible with the 94 Blue anodized forks?

Thanks Alan

I wrote this information which was taken from my motocross parts catalogue on a thread recently...

I have just had a look at my catalogue and the seal sizes listed for KX500s are as follows...

83-87, 43x55x10.5 (right way up forks)

88, 43x55x9.5/10 (right way up forks)

89, 45x58x10.5/11 (right way up forks)

90, 41x53x8/9.5 (upside down forks)

91-96, 43x55x9.5/10 (upside down forks)

97-03*, 46x58x9.5/10 (upside down forks).

So, the 83-87 bikes ran 43 mm right way up forks.
88 bikes ran 43mm right way up forks with different seals.
89 ran 46mm right way up forks.
90 bikes had 41mm upside down forks.
91-93 bikes had 43mm forks.
97-03* bikes had 46mm forks.

*I would guess that the 04 bikes also use the same size forks as the 03 but don't know for a fact.

[alan]

Thanks Guys!