Maintenance & Technical > KX500 Original

KX 500 faults and fixes thread

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gowen:
What about the viberation? It is really bad!! Any rubber mounts or anything that can be done? It's to the point of annoying.

THanks

Rick:
Short of getting the crank dialed in to zero (no runout), there are only a few things you can do:

- Switch to Pro Taper bars...more flex
- Switch to big fat "Pro" grips.  For less than $10 you won't believe the difference.
- Bar inserts.  These are brass inserts that you stick in the end of each bar, and they ride on rubber orings.
- Loosen your grip on the bars...assuming you are running a Scotts dapener.  Riding more relaxed without the death grip on the bars was the single best fix for vibration, as less vibration is transmitted when you don't hold on as tight.
- I think Paul swaps the rubber bar mounts for solid mounts, but I have never tried this change, so can't comment on it's impact on reducing vibration trasmitted to the eye balls through your arms.  (after 75 miles on a bike with lots of vibration, my eyes go numb :shock: )

Of course, you can always change your sprockets to 15/40 so you don't have to rev so high.  :wink:  :lol:

Rick

gowen:
Never thought about Grips. Any suggestions? If I remove the center bar (thingy that hooks from one side of my renthal bar to the other) would that help?

Thanks

toddwunsch:
If you are running a 7/8" renthal bar (stock bar clamps), you might want to leave that center bar in for strength and support.

demographic:
I have heard that filling the bars with silicone sealant (like you put round the bath) helps reduce vibration.

Another way of doing this is to fill a plastic tube with silicone then put the tube into the bars (bit like a Bar Snake). I was goin to try this method but the plugs that hold my Barkbusters in place won't come out :roll:

I seem to remember both these cures coming up on dirtridernet but I have not tried them so can't comment  :?

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