Avid's New Four-Piston Disc Brakes(?) 9

Earlier today we caught a first glimpse of a new prototype rear derailleur from Sram. The boys over at mtb-news.de have a photo of it from a different angle. The derailleur is certainly interesting, but there's something else that caught our eye in this photo. Check out the brake caliper. That's something we haven't seen from the Avid camp yet. Given its sleek look and high polish black finish, we're guessing it's a four piston X0.

Expect details this March.