The SES 4.5 AR Disc is an uncompromising aero wheel designed specifically for disc brake equipped bikes and large volume 28 to 30mm road tires. Conceptualized for the cobbles of Paris-Roubaix through our partnership with Team Dimension Data, the SES 4.5 AR Disc was developed to deliver top shelf aero performance, stability, and comfort for virtually any road surface. The SES 4.5 AR Disc is available as a tubeless clincher and tubular model rim. The SES 4.5 AR Disc borrows from ENVE M Series carbon mountain wheel tubeless technology and features hookless beads. Hookless beads improve aerodynamic performance by aiding airflow from tire to rim as well as allow for the best tubeless tire performance possible. Like all Smart ENVE System aero wheels, the front and rear rims are specifically designed for the airflow seen at the front and back of the bike. As such, the front rim is more shallow and wider to maximize stability and the rear is deeper and narrower to aid in drag reduction. In addition to dissimilar geometries, the SES 4.5 AR Disc features a disc brake specific construction that saves weight, improves strength, and creates an unprecedented ride quality.