Zipp 858 NSW A1 Tubeless Disc Brake 700c Rear Wheel XDR Freehub

Zipp’s ultimate aero weapon is now tubeless ready. That means you get the many aero advantages of the 858 NSW Tubeless Disc-brake wheelset with the added benefit of increased cornering grip and compliance with reduced rolling resistance.

The wheelset’s 18mm internal width is optimized for running wider tires at reduced air pressure. The 858 NSW’s undulating 77/82mm-deep rim shape, our proprietary Sawtooth™ profile, takes design cues from nature for our highest performing wheel when it comes to aero efficiency and crosswind stability.

These structures inspired Zipp advanced development engineers to, for the first time, systematically apply biomimicry to solve the complex challenge of designing a wheel, with the undulating Hyperfoil™ nodes, that reduces both aerodynamic drag and side force.

When it comes time to scrub off speed or stop, disc brakes will give you the confidence and stopping power you need. Simply put, the 858 NSW Tubeless Disc brake is ideal for those focused on triathlon, time trials, or aggressive road riding.

FEATURES

Zipp graphics and cosmetic identity that screams speed, applied using Zipp’s ImPress™ direct-print technology

Cognition DB hubset rolls efficiently whether you are pedaling or coasting. Its Axial
Clutch™ technology allows the freehub’s ratcheting mechanism to deliver half the
mechanical drag of conventional three-pawl hubs

18mm internal width and tubeless compatibility for optimization of wider tires with lower
tire pressure

Sawtooth™ rim with Hyperfoil™ nodes and HexFin™ ABLC dimple pattern for top aero
and crosswind-stability performance with an undulating 77/82mm rim depth

Center locking rotor interface. Lockring is included

Ships with 12mm front and rear end caps

SPEC

Orientation (wheels): Rear

Size (wheels): 700c

Rim construction: Carbon

Tire compatibility: Clincher Tubeless Ready

Rim depth: 82mm

Surface texture: ABLC SawTooth

Brake compatibility: Disc (Center Lock)

Rim – inside width: 18mm

Rim profile: Symmetrical

Rim finish: UD fiber, Impress technology

Color (Decal): Standard

Nipple material: Aluminum

Nipple anti-rotation: Sapim Secure-Loc

Spoke type: CX-Ray – Black

Spoke count: 24

Spoke pattern: 2 Cross

Hub: Cognition

Driver body type: SRAM XDR

Color (hub): Dual Tone: Matte & Glossy Black

Axle type (Wheels): TA 12×142

Axle material: Aluminum front & rear

Bearings: Cartridge – Stainless Steel

Driver Mechanism: Axial Clutch

Driver body material: Aluminum

Max tire pressure: 125psi

Max recommended rider weight: 250lbs