Tamean

~SPONSOR~
Jan 27, 2001
66
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What sparkplug can be used in place of a NGK R6252K-105 for a 99' kx100. They're $18 and not kept in stock, so there's 3-4 days shipping, and that's just for a single sparkplug! My kdx uses a $3 B9ES that can be bought practically anywhere.

Your help is greatly appreciated,
Thanks
 

Solid State

Member
Mar 9, 2001
492
0
Been through this with my daughter's KX85. The story from Kawasaki and NGK is that the small 2-strokes tend to get hot and vibrate like hell. The standard bent ground electrode design has had a history of breaking off under these conditions and causing lots of engine damage. The stock plug that nobody carries has a welded ground electrode that is not gap-able and is designed especially for this application.

I bought eight or nine of them on-line at buykawasaki.com. They are $7.30 each.

Hope this helps :thumb:
 

Chili

Lifetime Sponsor - Photog Moderator
Apr 9, 2002
8,062
17
We run BR9EYA plugs in my son's 99 KX80. No issues here so far but it's always a risk going away from something the manufacturer recommends.
 

IrishEKU

A General PITA.
LIFETIME SPONSOR
Apr 21, 2002
3,806
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Originally posted by cr25096er
my friend has had a b9es in his kx100 for a few months now. no problems.


That is the recommended plug as long as you haven't added to the pipe/carb.

Phillip
 

IrishEKU

A General PITA.
LIFETIME SPONSOR
Apr 21, 2002
3,806
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Go to the 9 or suffer through it again. The 9 is a little warmer and will burn better.

Phillip
 

nikki

Moto Junkie
Apr 21, 2000
5,802
1
I had a '99 KX 80 and fouled two of the stock R6252K-105's. Then I put a $1.50 BR8ES in there and never fouled another plug again. Depending on what type of riding/RPMs you're running the bike you might want to run a BR8ES (lower RPMs, more trail riding), BR9ES (intermediate riding, some-most high RPMs), or BR10ES (expert riding, WFO all the time).
 
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