Seller notes

Simple but effective way to shift the torque curve to favor the low- to mid-range band of the rev range. Insert spacer between cylinder and reed replacement valve. CNC-machined, eliminating interference problems when installing. Kit includes gaskets and bolts. Made in the USA. fits YAM YZ80 1993-2001 fits YAM YZ85 2002-2008 *Free to the contiguous United States consisting of the 48 adjoining U.S. states plus Washington, D.C., on the continent of North America. Free is not available to non-contig...

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