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Dirt Bike Discussions By Brand
Dirt Bike Brands - Other
2001 Xr250
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[QUOTE="DualSportr, post: 123895, member: 19592"] Definitely do the Thumper Racing muffler insert -- for a stock displacement XR, it's as much hp increase as a complete aftermarket exhaust. I personally like the plush suspension of the stock XR250, it fits the power delivery, and it really is tuneable, which the older XR's definitely WEREN'T! The Summers racing fork brace is a must if you do lots of whoops and fast open stuff - for tight trails I don't notice the difference as much (just my opinion). I ride anywhere from 600' to 8,000' and did not have to re-jet with the Thumper Racing insert and the snorkle removed. The stock filter on the newer XR's actually flows well, and you might want to keep it. As far as jetting goes, yes, four strokes can foul plugs - but only if the jetting is too rich (just like two strokes). With an increase in airflow (airbox mod and muffler mod) more fuel may be required, or you will overheat/lean seize the beast (just like a two stroke). This is just basic maintenance stuff which you would have to do with ANY bike you purchase. That said, on most of the 2001 XR250's I have come in contact with, the stock jetting is okay after the mod's we've mentioned. I have seen two XR250's which required larger pilot jets. Both of these were running right at sea level in humid conditions. These are cool, fun trail bikes. Keep in mind that Dirt Bike (or was it Dirt Rider?) shootout a few months ago rated the XR250 over the WR250 for best trail machine :) [/QUOTE]
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Dirt Bike Discussions By Brand
Dirt Bike Brands - Other
2001 Xr250
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