You just looking for the lever ? If yes, check Ebay out. They have quite a few choses in the short levers and regular for the RCS19. I run a short lever on my RCS19. Cheers But if you want the original one, I might be able to find mine for you at a decent price:
If I can find it surely a good price... but at $16 (Taiwan shorty) you can't go wrong Brembo lever $57+shipping Here is an OEM lever $66 Aftermarket (China) $40 Aftermarket (Taiwan) shorty, low drag $16