Zipp 404 NSW Carbon Clincher Wheel - Rear. When you never know what the road is going to throw at you, there's only one wheel you need. The Zipp 404 NSW carbon clincher is one of the fastest and most versatile wheels that Zipp has ever made. First things first: What does NSW mean? NSW is the name of Zipp's super-secret speed lab. According to our SRAM rep, there's only a handful of people in the entire company that have access to the facility, and it's where their most exciting developments happen. So what makes the 404 so fast? Glad you asked. The 404 NSW features a rim shape that came out of more than 40 concept studies and endless trips to the ARC wind tunnel, and gives a substantial savings over the 404 Firecrest rim shape. The 404 NSW shape performs better in a crosswind than the Firecrest model, and is designed to be adept at climbing while stilling helping you maintain top speed on the flats. The new ImPress graphics are also printed directly on to the wheel, so they no longer cover up the dimples on the rim, allowing for a smoother airflow across the wheel. And speaking of those dimples, they've been realigned into an ABLC SawTooth design that diminishes the small air vortices that can build up on the rim, saving you even more time. And since wheels also need to be able to slow you down too, the new Showstopper silicon carbide brake track provides unmatched stopping power and modulation, in either the wet or dry--a first for carbon wheels.
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