Updated with Road Tubeless technology and optimized for disc-brake performance, this proven performer is lightweight, strong and versatile. 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 a 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. Climb, accelerate and sprint faster. 19mm internal rim width increases air volume. ISM 4D superlight rim. Double-butted steel spokes keep the weight down, for a fast and comfortable ride. Powerful, reliable disc brakes for more confidence and control. 24 spokes front and rear for optimized brake torque distribution. Front hub convertible from 12mm or 15mm thru-axle to quick release. Rear hub convertible from 12x142 thru-axle to quick release Center Lock brake compatible.