Top aero performance on disc-brake road bikes is now more obtainable than ever. UST Tubeless Road technology makes this new wheel-tire system faster and smoother Roll faster and smoother with a reduced risk of punctures. With UST Road Tubeless, no tube means no friction. So you experience less rolling resistance and higher speeds. UST Road Tubeless lets you ride with lower tire pressure for smoother ride and a reduced risk of punctures. Our patented UST system offers a perfect union between tire and wheel, so installation, removal and maintenance are easy. Added speed and efficiency for sprints and solo riding. 30mm deep aero rim profile . Ultra bladed straight pull spokes. Aerodynamic hubs. Disc-brake technology gives you added braking control. Engineered with a disc-brake specific rim profile. 12mm thru-axle hub front and rear, convertible to quick release. Compatible with Center Lock rotors and XD-R cassette.