Mosaic RT-Zero FramesetEach RT Zero is Made to Order. The exact tube selection, including diameter, wall thickness, and butting profile will be tailored to you. If you know the Mosaic RT 1, the RT Zero delivers an even livelier, more responsive feel during hard efforts and out of the saddle climbs. The oversized downtube and Zero Ops carbon seatmast create an exceptionally stiff bottom bracket and near instantaneous power transfer. Building on that rigid foundation, the