The Speed Concept 9.9 has a SRAM Red drivetrain, allowing the rider to reach top speeds with ease. The wheels are Aeolus 6.5 and have hidden quick releases, making the Trek bikes aerodynamic for a smoother and faster ride. The Trek bikes offer an on-board computer sensor and internal cable routing, to make them high-tech, and the Speed Concept 9.9 is no exception. This model is equipped with SRAM Red R2C shifters, allowing the rider to shift through each of the 10 speeds at his or her leisure. The Speed Concept 9.9, as with all of the Trek bikes, is fully customizable.