Maintenance & Technical > KX500 Original

fork oil

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kiwimonster:
how much oil does each fork take  i am going to put in some heaver oil to combat it bottoming out

hughes:
What year bike you working on? Look here http://www.kxriders.com/forums/index.php/topic,4816.0.html

jfabmotorsports.com:

--- Quote from: kiwimonster on May 27, 2009, 06:17:12 PM ---how much oil does each fork take  i am going to put in some heaver oil to combat it bottoming out

--- End quote ---

If you are happy with the way that it rides, putting heavier in will make it harsh. It is better to raise the oil level a little at a time to combat bottoming. With more oil you have a smaller air space, less air space more PSI at the top of the stroke. Don't go past the max limit though or your seals will tell you!

JFAB

KXcam22:
On the KX fork I found that it is virtually impossible to get both great bottoming resistance AND smooth operation, without a revalve.  I found that increasing the oil level was not the right thing to do.  An increased level lead to mid-stroke hashness, very noticeable.  The best fix was to run a lower than normal oil level and use heavier springs.  This made a super-smooth fork that only bottomed on the worse stuff. I never did revalve it. Cam.

kiwimonster:
cheers guys im pushin the kx quite hard in mx   im 150kgs    i went to a heavy spring on the back which is sweet now   but on drop off and braking bumps im getting metal on metal on the front maybe heavy springs i will have to put in it. cheers

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