Curiosity... Is there a list anywhere of improvements by year?

[Thumper33]

I've been looking and can't seem to find somewhere that breaks down the YZ/WR timeline and what improvements were done to the bike each production year. Does anyone know off the top of their head or better yet know a site that lists them all?

(Boy, this forum can be rather addicting ?)

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Looking for WR... Currently Savings: $2500 and counting...