http://www.la-becanerie.com
Il sera un peu difficile si tu ne parles pas le francais. Heh.
La Becanerie is kind of a last resort because the shipping from france is not cheap, even though their prices are reasonable. Better to contact u.s. shops and see if they have or can get stuff. Springing for this pulley wasn't really a smart move on my part :\ Hopefully its not a piece of junk.
There's no real advantage to this over stock pulleys, except that it doesn't have that crappy arm switch, its just fixed to the sprocket. It might be _slightly_ lighter, and wont have the slight crookedness my old pulley had.