The 404 Firecrest Carbon Disc Brake Road Clincher Wheel is Zipp's answer to keeping this versatile and aerodynamic rim profile current with the shifting trends towards disc brakes for nearly all cycling disciplines. Whether you're looking to run even rim depth front to rear on your new disc equipped steed, or aiming to mix and match the dish, this wheel delivers confident speed and predictable handling no matter the conditions.The 404 is an ambitious rim profile designed to bring near tubular feel to the clincher world, featuring an aerodynamic 58mm rim depth and a 16. 25mm internal rim width that gives the tire a solid platform to reduce instability caused by the side bulge effect found in tires mounted to narrower rims. Zipp testing shows that this design creates a more stable structure, providing greater radial compliance for a comfortably controlled ride over rough road surfaces. At the same time, this design also increases lateral stiffness for snappy jumps and sharp corners.Aerodynamics are a key element of the 404 Firecrest's versatility. It features an updated version of Zipp's signature Aerodynamic Boundary Layer Control ABLC dimpling, which uses strategically placed and sized dimples across the rim's surface to smooth airflow and reduce drag. ABLC boasts aerodynamic advantages real world yaw angles of ten to twenty degrees, compared to many wheels out there that feature minimum drag numbers at yaw angles of five to ten degrees that rarely occur outside of a wind tunnel. In non techy talk, that means these wheels outperform the competition in the windy conditions you'll actually encounter out on the road.At the center, Zipp uses its 77 disc hub on the front and its 177 disc hub on the rear for a smooth ride every time you clip in. Featuring a new platform and graphics for 2016, these hubs boast increased bearing protection over their predecessors and are ready to roll without any pre load adjustment. The rear hub is compatible with a separately sold...