Nature as a model: The 454 NSW Carbon Tubeless Disc-brake from Zipp

What’s more, a wider rim is designed for tubeless tires at lower pressure for reduced rolling resistance and vibration damping, so you’ll lose as little energy as possible out on the road. This wheel is optimized for 28mm tubeless tires for all out speed. The 454 NSW features Zipp’s most advanced technologies. Its undulating 58mm Sawtooth™ rim shape with Hyperfoils™ is our most aerodynamic and stable wheel. The 454 NSW features Zipp’s Total System Efficiency™ (TSE™), our approach at combatting the biggest enemies of speed: wind resistance, gravity, rolling resistance, and vibration losses. And gravity? The 454 NSW Tubeless Disc brake is roughly a pound (more than 400 grams) lighter than its predecessor! Zipp’s use of hookless (straight side) rims in the 454 NSW is integral to Making You Faster. With hookless, the transition between the tire and the rim is more seamless and aero. Zipp’s hookless rims have more efficient resin distribution, which means lighter, stronger wheels. At the center of the 454 NSW is the Cognition V2 Hubset re-engineered with an updated Axial Clutch V2™ mechanism for quicker engagement, lower friction, and improved durability.

Features – Zipp 454 NSW Carbon Tubeless Disc-brake

• Cognition hubset rolls efficiently whether you are pedaling or coasting with Axial Clutch V2™ technology
• The 454 NSW Tubeless Disc brake is roughly a pound (more than 400 grams) lighter than its predecessor!
• TSE™ for greater efficiency and reduced rolling resistance
• Sawtooth™ rim with Hyperfoil™ nodes and HexFin™ ABLC dimple pattern for top aero and crosswind-stability performance with an undulating 53/58mm rim depth
• Zipp graphics applied using Zipp’s ImPress™ direct-print technology
• Center locking rotor interface. Lockring is included
• XDR™ or SRAM/Shimano driver bodies
• Ships with 12mm front and rear end caps
• Campagnolo driver body sold separately

Product features

• Use: Road, Triathlon, Cyclocross
• Model: 454 NSW Tubeless Carbon Clincher
• Rim size: 28″
• Tyre type: Tubless only
• Spokes: 24
• Brake type: Disc Brake (Centerlock)
• Tubeless system: yes
• Max recommended system weight: 113kg (body weight + bike + equipment)
• Max tire pressure: 8.62bar (125psi)
• Rim: Zipp NSW
• Inner Rim witdh: 23mm
• Rim depth: 53/58mm
• Valve hole: SV (6.5mm)
• Hub: Zipp Cognition 2
• Hub axle system: 12 x 142mm Thru Axle
• Spoke type: Sapim CX-Ray
• Spoke pattern: 2-cross
• Nipple type: Sapim secure-loc

Freehub Compatibility (choose variant)

• Shimano Freewheel: 8-/9-/10-/11-speed Shimano/SRAM (Road)
• Sram XDR Freewheel: 12-speed Sram

Material

Technologies

SawTooth™
SawTooth™ is the name given to Zipp NSW’s patented variable depth 53/58mm rims. Developed utilizing the principles of the emerging science of biomimicry, Zipp engineers began the rigorous aero development process of SawTooth™ utilizing the wind tunnel, CFD, and real-world testing. The result is a rim shape that takes nature’s most elegant design solutions and combines engineering precision to deliver a wheel that performs unlike any made before. This patented new rim shape achieves something conventional aero wheels cannot; it simultaneously reduces both aerodynamic drag and side force for the ultimate in AeroBalance™. Sawtooth™ accomplishes this with a series of patented fin-shaped Hyperfoil™ nodes along the inner diameter of the rim that work together with our new HexFin™ ABLC dimples for improved airflow. The result is Zipp’s highest performing wheelset ever realized with both aero-drag reduction and reduced side force at all wind yaw angles. This is important because higher wind yaw angles are where bike handling is most affected by the wind.

Hyperfoil™
Hyperfoil™ is the name given to the individual nodes on Zipp NSW variable depth Sawtooth™ rims. Each of these patented structures features our HexFin™ ABLC dimples that help to stabilize handling in gusting wind by increasing wind vortex shedding frequency. The higher frequency vortex shedding produced by Sawtooth™ creates a greater number of smaller, less powerful, yet more predictable vortices leading to greater wheel stability. This added stability translates into greater rider control, thereby saving energy that is typically expended trying to hold a line in gusting wind. The result is a faster, more confident riding experience whether you are laying down power or descending sinuous mountain roads.

HexFin™
HexFin™ ABLC dimples are the hexagonally shaped depressions found at each Hyperfoil™ of our Sawtooth™ shaped NSW rims. The angular shape of each dimple increases boundary layer mixing to help keep airflow attached to the rim for reduced aerodynamic drag and improved stability in crosswinds. To further improve the effectiveness of the hexagonal dimples, they are arranged in fin-shaped clusters made up of variable sized dimples that work in concert with each Hyperfoil™ of a Sawtooth™ rim.

ImPress™
Zipp has employed the ImPress™ graphics technology, which prints graphics directly on the wheel, to help allow the dimples to do what they were design to do – help control vortex shedding, the rate at which air sheds off the wheel. Managing this is crucial to stability. ImPress graphics also give NSW a distinctive stealthy look.