The 454 NSW's undulating 53/58mm-deep rim shape provides durability and performance, while delivering a level of Aero Balance unlike any wheel ever made. Making use of our NSW-exclusive Cognition hub set, 454 NSW rolls efficiently whether you are pedalling or coasting. Our Axial Clutch technology allows the free hub's ratcheting mechanism to deliver half the mechanical drag of conventional three-pawl hubs. Assembled with Swiss bearings made to our exacting specifications, the Cognition hub set is as robust as it is fast. Zipp's ImPress NSW graphics technology, which prints graphics directly onto the rim, reduces weight and helps the Hex Fin ABLC dimples to do their aerodynamic job.