Whether it's a sign of things to come or just prototype eye candy, there is no doubting the sex appeal of this SRAM Red disc-equipped prototype Giant TCX. The stealthy crosser was on display during Giant's recent mountain bike team unveiling at its U.S. headquarters in Newbury Park, California.

And while the focus of the one-day powwow was distinctly mountain bike centric (including a sneak peek of four prototype 27.5-inch bikes), this carbon cross machine with Adam Craig's named emblazoned on the top tube was certainly a head turner. Craig, a former cross-country Olympian, will spend the summer focused on enduro racing before turning his attention to hopping barriers on the U.S. cyclocross circuit. Perhaps this will be his bike of choice.

Highlights included the aforementioned SRAM hydraulic brake set-up, which RoadBikeReview will be getting full details on during the upcoming Sea Otter Classic in Monterey, California. We also measured a 135mm rear drop-out spacing, and noted a single-ring SRAM XX1 36-tooth chainring.

But perhaps most noteworthy was the use of a 15mm thru-axle fork. Obviously this would slow down wheel changes, but the added stiffness might just be worth it, especially for a racer like Craig who is a little more aggressive than most.