The Zipp 303 Firecrest Tubeless Disc-brake XDR Rear Wheel is efficient, speedy, and perfect for imperfect conditions and roads. This rear wheel is light, fast and capable over all terrain. Its low profile boosts aero efficiency on the road by providing low drag, and improving transition between rim and tyre. By combining a wider tyre, increased tyre volume and lower tyre pressures, this wheel offers a smooth ride over imperfect pavements and roads. The 303 Firecrest Tubeless Disc-brake wheel is perfect for those dedicated cyclists who are passionate about the latest technology. With this wheel, you become faster, and your motivation will match the most advanced technology. Versatile endurance wheelset for the modern road bike with tubeless and hookless rim profile. Lighter Weight than its predecessor, making it nimble and fast. Ultra-wide 25mm rim profile creates a better tyre interface to be fast on or off the road.