Wh r9170 tu carbon tubular disc brake wheel designed to meet pro road race criteria key features lightweight tubular full carbon 40 mm deep 24 mm wide rim for improved aerodynamics increased rigidity and excellent inertia easy to use centre lock rotor mount for use with disc brakes 24 stainless steel butted 20 18 20 and bladed straight pull spokes for optimal balance and rigidity elbow less spokes make for a strong yet compliant wheel high lateral rigidity is produced with a wid