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. Cyclists looking for more speed, comfort, and traction on all road surfaces will find the SES 4.5 AR Disc a game-changer. The introduction of road frames with disc brakes and increased tire clearance has allowed ENVE to take an unconventional approach to wheel design. The result is a wheel that brings new levels of confidence and performance to the road cycling experience. Rebellious, unconventional, and pioneering are words that describe the one of its kind SES 4.5 AR Disc. Conceptualized for the cobbles of Paris-Roubaix through ENVE's 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. Technical Specifications CLINCHER SPECS FRONT REAR WHEELSET Rim Weight 440g 450g 890g DT 240 700g 806g 1506g King R45 CL 708g 836g 1544g TUBULAR SPECS FRONT REAR WHEELSET Rim Weight 388g 396g 784g DT 240 642g 741g 1383g King R45 CL 650g 771g 1421g RIM SPECS FRONT REAR Depth 49mm 55mm Internal Width 25mm 25mm External Width 31mm 30.5mm Hole Count 24 24 Effective Rim Diameter 558mm 547mm Aero Optimized Tire Size 28c 28c