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Dirt Bike Discussions By Brand
Kawasaki MX & Off-Road Dirt Bikes
KX85 engine vs KX100 engine
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[QUOTE="motometal, post: 1121400, member: 24727"] some folks like to add a flywheel weight for woods. I've never tried it. Personally I thought the KX100 had a good motor but stock had a pretty narrow powerband. Decent low and mid but once it hit it wouldn't rev much above that. Did "team green" porting and careful jetting, with stock pipe and it ran significantly better. Other mods were a higher pressure radiator cap (stock cooling system is marginal for a heavier rider and/or tight trails and/or wide open running). Carbon fiber reeds (the new ones may come with these). Also heavy springs, especially fork springs...the stockers are way soft if you are jumping at all, of course this depends on rider weight. I think I changed to a heavier fork oil as well, and ran it as high as I could get away with, but for woods this may not be the best setup. Also depending on the conditions I geared it down quite a bit, one tooth down on the front and may have had a larger rear as well. Main weak spot other than forks was the powervalve system. I kept breaking the cross pin for the flap valve. No catastrophic failure (no damage to piston and cylinder), but it would just make the engine run poorly because the powervalve would stop working. I'm not sure if this has been fixed/updated. hope this helps. My current mini is now an RM85L. [/QUOTE]
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Dirt Bike Discussions By Brand
Kawasaki MX & Off-Road Dirt Bikes
KX85 engine vs KX100 engine
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