GR2

After starting with steel frames, Argonaut switched in a big way—making its own carbon-fiber builds, and the tools that shape it, for an exacting level of precision. The custom, high-end GR2 is just 16 pounds, running 700c x 38mm tires, and this speed demon will give you an edge on all but the gnarliest terrain. Before ordering, plan to know specifics, like your ideal wheel set and drivetrain. argonautcycles.com

ARGONAUT FROM $10,700