At first touch the stock master cylinder feels pretty good on this bike although the feedback is quite vague, but once you try something better like this Brembo unit you will instantly be amazed at just how crappy the OEM master cylinder really is.

From Dan Kyle it comes with the reservoir, brake light pressure switch, hose,clamps & the special reservoir mount to fit the Sato clip-ons (really trick piece) for just $350 or $275 without the kit

with mount exposed