Zipp 808 NSW Carbon Clincher Tubeless Disc Brake Rear Wheel

The relentless pursuit of speed leads many cyclists straight to the 808 NSW, with its 82mm rim depth and unsurpassed crosswind stability. The 808 NSW Carbon Clincher Tubeless Disc brake wheelset builds on that lineage with a revised rim shape and tubeless compatibility, along with the increased stopping power and speed modulation of disc brakes.

Rim depth and shape along with tire selection were all carefully considered throughout the development process. The 808 NSW, with an internal width of 19mm, is optimized for smoother pavement and are aerodynamically optimized for 25mm tires. By extending our patented ABLC™ Sawtooth™ dimples all the way to the rim’s edge on each of the wheels, NSW disc brake rims deliver higher frequency wind vortex shedding for best-in-class crosswind stability.

Designed to be tubeless compatible, NSW disc brake wheels feature a rim bed made with internal ridges to lock the tire’s bead in place. A tubeless setup allows riders to select lower tire pressure for more comfort while reducing the risk of pinch flats. Tires such as the Zipp Tangente RT28 or RT25 Road Tubeless are a perfect match for the new wheels and deliver exceptionally low rolling resistance and high corning grip.

To ensure our exacting manufacturing standards are met, all NSW rims are handmade in Indianapolis and feature Zipp’s exclusive ImPress™ graphics technology—which prints graphics directly on the wheel rather than using decals—to help allow our ABLC Sawtooth dimples to do what they were designed to do, control vortex shedding. This is crucial to achieving the high stability and low-drag combination we call Aero Balance™. ImPress graphics also give NSW wheels a distinctive stealthy look while keeping rims as light as possible.

Cognition Disc Hubset

Every time a conventional hubset starts to coast, friction within the freehub ratchet mechanism works like a drum brake to slow the rider down. With the Cognition Disc-brake hubset’s Axial Clutch technology, we’ve reduced this drag by disengaging the ratchet mechanism when coasting. Our testing shows that the best traditional three-pawl hub designs have twice the rotating friction as our Axial Clutch equipped Cognition rear hub, and the most popular hubsets using a similar drive mechanism as Axial Clutch were found to produce four times the rotating friction.

All NSW rims are handmade in Indianapolis, where Zipp's engineering, manufacturing, and testing are conducted and includes "The Nest" advanced development lab where NSW was born.

Each Wheel Includes:

• Zipp Tangente Quick Release Skewer
• Zipp individual wheel bag
• Zipp Tubeless valve – factory installed
• Tubeless rim tape – factory installed
• Zipp Cognition thru-axle caps to fit 12x100, 15x100 dropouts for front wheels, and 12x142 dropouts for rear wheels
• Zipp Cognition oil – for rear hub service
• Freehub body spacer – 11 to 10 speed

ImPress™

We’ve employed Zipp’s 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.

ABLC™ SawTooth™ Technology (Aerodynamic Boundary Layer Control)

Our new Sawtooth dimple design consists of 12 nodes that are specifically clocked to start aerodynamic shearing at a rate of 50hz at a rider speed of 20mph. Sawtooth accomplishes this by inducing small sheet vortices that shed at a low magnitude, but at a higher natural frequency, thus decreasing the laminar bubble effect on the aerodynamically shielded side of the rim’s profile to further reduce high yaw drag and improve crosswind stability.

Rear Wheel Specifications:

• Weight: 950g
• Hub Used: Cognition Disc rear
• Brake Interface: Center locking – lock ring not included
• Hub Width: 135 / 142mm
• Rim Depth: 82mm
• Max Width: 26.4mm
• Internal Width: 19mm
• Spokes: Sapim® CX-Ray® J-Bend
• Spoke Count: 24
• Spoke Pattern Non-Drive: 2 cross
• Spoke Pattern Drive: 2 cross
• Spoke Length Non-Drive: 226mm / J-bend
• Spoke Length Drive: 230mm / J-bend
• Max Tire Pressure: 125psi
• Max Tire Pressure: 8.62bars
• 10 or 11-speed Compatible Hub: Yes
• XDR Compatible: Yes
• Track Adaptable: No
• Dimpled Surface: Yes
• Nipples: Sapim® Secure Lock
• External Nipples: Yes
• Thru Axle Compatible: Yes
• Tubeless: Yes