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Dirt Bike Discussions By Brand
Canadian Daves JustKDX
KDX 250 opinions
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[QUOTE="spanky250, post: 171128, member: 20897"] You can't be serious. If you let the valve assembly go that long without cleaning, assuming you actualy ride the bike more than once a year, you are lucky you aren't replacing the actuating arm and governor shaft on a regular basis. The steel teeth on the sub-port wings will shear the teeth right off of the actuating rod if you let the valves get dirty enough to start binding. If it starts to bind very bad, the governor shaft can snap, falling into the tranny and taking out the clutch, primary gears, and who knows what else. Clean the valves at every top-end service. I usually do a top-end on my 250 every 50 hours or so. As for pipes, I tried the Pro Circuit, as well as the FMF Fatty that I currently run. They are similar in performance, but not identical. The FMF is noticably stronger in the mid, and hits harder than the PC, but the PC has a smoother transition from low-to-mid, and revs a little higher than the FMF. I would say the FMF is more of a low-to-mid pipe, and the PC leans a little more towards being a rev pipe. For the tight woods that I ride in, the increased torque and midrange pull of the FMF is the better setup. [/QUOTE]
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Dirt Bike Discussions By Brand
Canadian Daves JustKDX
KDX 250 opinions
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