The Zipp Super-9 Disc Brake Tubeless Disc Wheel is the go to rear wheel for some of the highest level triathletes and time trail riders out there. This wheel is made to promote pure speed with its excellent stiffness and aerodynamic profile. A carbon rim promotes that massive power transfer and keeps things lightweight. This version is made to run tubeless tires, featuring an 18mm internal width. This allows riders to run their tires at a lower pressure, resulting in better cornering, more comfort, and lower rolling resistance. To top it off, you can count on powerful and controlled braking, giving you the confidence to go full steam ahead. The Zupp Super-9 Tubeless Disc Wheel adds aerodynamics, power, and speed to your most important rides.