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Dirt Bike Brands - Other
Best Bolt-On Aftermarket H.P. for XR250R
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[QUOTE="DualSportr, post: 138108, member: 19592"] Check out the FMF power bomb system or the White Brothers (with the disks, not the race baffle). These two tested the best on the dyno with a stock XR250. Don't expect much from bolt-on mods with the thumper. The pipe and baffle mod will give you a total of about 15% increase over stock hp. Noticable, but it's not gonna rip your arms out of the sockets. For a bunch more power (in the 25% or greater arena) you'll have to increase the bore size, or go higher compression. [/QUOTE]
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Dirt Bike Discussions By Brand
Dirt Bike Brands - Other
Best Bolt-On Aftermarket H.P. for XR250R
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