Zipp's Sharpest Aero Weapon
Zipp's new 858 NSW is incredibly fast in the wind (thanks to its undulating rim shape) and on the ground (thanks to tubeless). Now, the 858 NSW is even better with an improved hubset.
You get the many aero advantages of the 858 NSW Tubeless wheelset with the added benefit of increased cornering grip and compliance with the reduced rolling resistance of tubeless. The wheelset's 18mm internal width is optimized for running wider tires at reduced air pressure. The 858 NSW's undulating 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.
The 858 NSW's Cognition DB V2 Hubset is re-engineered with Axial Clutch V2 for quicker engagement and lower friction. Every time a conventional hubset starts to coast, friction within the freehub ratchet mechanism works like a drum brake to slow the rider down. The drag between the hub shell and driver body during coasting is considered an efficiency loss, especially for road wheels. The solution? The rear Cognition DB V2 hub with AxialClutch V2 technology reduces drag by disengaging the ratchet mechanism when coasting. The AxialClutch V2's wave spring acts to reengage the ratchet mechanism quickly and consistently once the rider starts pedaling. The hubset also is lightweight and durable.
- Axial Clutch V2
- A cosmetic identity that screams speed, Zipp graphics applied using Zipp's ImPress direct-print technology
- Cognition DB V2 hubset rolls efficiently whether you are pedaling or coasting. Its Axial Clutch V2 technology reduces drag and lowers friction
- 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
- XDR or SRAM/Shimano driver bodies - Ships with 12mm front and rear end caps
- Campagnolo driver body sold separately
- 1773g wheelset*
- Front 838g Rear 935g
- Lifetime Warranty
*Lightest configuration: 12mm through axles and XDR body. No tape or valve included in weight
FREE Cassette Installation - Order a cassette along with a wheelset and we can install the cassette for free. Cassette installation requires special tools that not all our customers have. The cassette will be professionally installed and torqued to spec. Just add "Please install cassette" to your order notes at checkout and we'll take care of you. Please Note: If our inventory allocation requires that we ship your wheels and cassette from different warehouses, we will not be able to offer this service.
B-Stock - This product has one or more B-Stock units available. These units can be purchased at a discount (see option select). B-Stock units were returned from other customers and may have missing or damaged packaging materials. These units are otherwise as new. The full manufacturer warranty applies. Click Here for more information.
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Front Hub Spacing: 12x100mm Thru-Axle
Rear Hub Spacing: 12x142mm Thru Axle
Rim Material: Carbon - Hookless
Tire Size Recommendation: 25c to 28c Tubeless Tires
Wheelset Weight: 1773 g
Hubs: Cognition DB V2
Mfg Warranty: 72 Mo. Parts & Labor
Warranty URL: https://www.sram.com/en/zipp/campaigns/warranty