Maintenance & Technical > KX500 Original

Spray foam insulation

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Adz478:
Just wanted to know if anybody has tried putting expanding spray foam in the ends of their handlebars to reduce viabration. If so did it help reduce any arm pump? Cheers :-D

Foxx4Beaver:
have'nt heard of anyone trying foam insulation in the bars,I tried it once in a frame on 93 KX250...helped for a while,but I think it breaks down over time and you lose the little benifits it gives you.
I have heard of guys pumping silicone/caulking in their bars with good results.
Another option some guys like is the FasstFlex bars....there's a thread on here about them,just type that in the "search" option and it'll come up. 

Adz478:
I suppose the foam would eventually break down in time, Cheers Foxx

Foxx4Beaver:
Another thing you can try,that does'nt cost a thing,is....keep a looser grip on the bars than you normally would.A local expert mentioned this to me several years ago,and I will say,it is alot easier said than done,but if you can get past your brain telling you to hold on for dear life,it will help ALOT.
Again,easier said than done.I just got back from a 2 hour trail ride...it rained last night,so there were alot of wet slimey roots,and many times the bars wanted to fly outa my hands,and I found myself getting arm pump/numbness and death gripping after a while.When this happens,I try to just SLOW down and take deep breaths for a few minutes,rather than stopping and resting.If you can RIDE through it,you'll have it happen less and less.But if you get to the point where you feel as though you might not be able to let off the throttle from so much arm pump,by ALL MEANS....SHUT IT DOWN!! :-D

Polar-Bus:

--- Quote from: Adz478 on June 23, 2012, 11:33:41 PM ---Just wanted to know if anybody has tried putting expanding spray foam in the ends of their handlebars to reduce viabration. If so did it help reduce any arm pump? Cheers :-D

--- End quote ---

The best trick for reducing bar buzz is to stuff 3/8" fuel line up inside the bars. spray the hose with Armour All or WD40 to lubricate the hose so i slides into the bars easier. Good luck.

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