With its lightweight carbon construction, increased aerodynamic efficiency, and optimal compliance, the ENVE SES 4. 5 Disc Wheel is our go-to for race days, lunch rides, and high-speed training days alike. Based on the original high-volume SES 4. 5AR wheel designed to deliver an aerodynamic advantage on the rough cobbles, the new SES 4. 5 Disc is re-engineered to keep us riding fast over any surface, keeping us entirely in control no matter how rough the road gets. ENVE built this wheel with a hookless bead design to optimize tubeless performance, including anti-pinch-flat technology that aids in the reduction of flatting.