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The rear brakes on Giant's new gravel bike are flat mount disc. The Revolt Advanced 0 comes with Ultegra calipers. Josh Berry's 2018 Gravel Worlds Giant Revolt Advanced 0 Gravel Bike. © Z. Schuster / Cyclocross Magazine

The rear brakes on Giant’s new gravel bike are flat mount disc. The Revolt Advanced 0 comes with Ultegra calipers. Josh Berry’s 2018 Gravel Worlds Giant Revolt Advanced 0 Gravel Bike. © Z. Schuster / Cyclocross Magazine