I've got a set of MNNTHBX fork upgrade springs. Good as new, if not better than new as I de-burred the edges of the short springs so they don't bind like they do in the installation video. Here's the description from the website:
"Add style and performance to your stock fork with this drop in spring set. 50% stiffer so it actually functions, and 3/4" shorter for a touch of stance. Included top-out springs eliminate the need for homemade spacers or sloppy fork action. No modification to fork required."
New they're $38 + shipping. Take them for $27 shipped (or $25 as gift) anywhere in the 50 States.
Also got a genuine Polini contra spring, not sure how much stiffer than stock but it's somewhere in between the white spring and stock.
$14 (or $13 as gift) shipped within the lower 48, more elsewhere.
Take MNNTHBX & Polini together for $32 (or $30 as gift) shipped.
MNNTHBX SOLD, polini available in another thread