Featuring a redesigned rim shape that aerodynamically integrates wider tubeless tires for enhanced ride quality and performance, the Zipp 404 NSW Carbon Tubeless Road Wheel is a do-everything wheel that's adept at climbing and maintaining speed on the flats, light enough to sprint out of corners, and comes along with all the benefits of running tubeless. Benefits like superior flat protection, the ability to run lower pressures, and a smoother ride with high cornering grip and low rolling resistance will have you hooked. It's important to stress the fact that the 404 NSW is, essentially, an upgrade to a recent--and very successful--upgrade. To be frank, our experiences on the 404 Firestrike have been so good that we're surprised Zipp has already seen fit to completely overhaul it, but that's exactly what the NSW model is: an overhaul of an already revolutionary design. As alluded to above, the rim's braking and aerodynamics have both seen improvements with no sacrifice to durability, and the NSW 404's refined carbon lay-up earns the set a claimed weight that's 32g lighter than the Firestrike equivalent and 102g lighter than the Firecrest. But believe it or not, it's not the rim that we're most excited about; it's the Cognition hub the rim is laced to. We admit that we haven't always associated Zipp with hub innovation--a fact attributable primarily to the above mentioned aerodynamic rim sorcery--but the NSW's Cognition rear hub may be the most exciting technology in factory wheels that we've seen since Zipp first introduced its bulging sidewalls. The hub is centered on Zipp's Axial Clutch mechanism, which features two Metal Injection Molding (MIM) ratcheting rings--one mated to the freehub body and one mated to the hub body. The two rings are machined like a ratchet, so they ramp off of each other while freewheeling but engage each other during pedal input. Compared to a standard pawl design, which actually resembles a drum brake, the Axial Clutch's MIM rings engage
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Zipp 404 NSW Carbon Road Wheel - Tubeless
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