Aethos: Billions of calculations for a single goal - the perfect ride. This is more than just a creed; it is a philosophy. The design of the Aethos strikes a balance between exceptional ride quality, extremely low weight, and undeniable style. This Aethos Expert model is no exception. With the electronic Rival eTap AXS drivetrain from SRAM and hydraulic disc brakes, combined with the robust Roval C38 Disc wheelset, you have the perfect companion for any road ride.