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The YZ250X is soft.  Yeah, yeah, we know it was meant to be that way but that does not mean it can’t be better.  Where is the fun in leaving it stock?   So with the help of the guys at Triangle Cycles we set out to get the YZ250X up to a higher standard in the engine department.  The end result is a bottom and mid that pulls like a four-stroke and a top end that does not shut off.  It will pull those taller gears no problem.  You get the best of both worlds for just $300.

Send us your Cylinder, head and Center Valve and we will mod it out to use 110 octane race fuel, the stock piston and gaskets.

If the 110 octane fuel is scaring you away from this mod then we suggest you check out our YZ285 big bore kit.