2023 858 NSW Disc Brake Tubeless

Zipp 2023 858 NSW Disc Brake Tubeless Frequently Asked Questions

• What is the maximum tire pressure for the Zipp 858 NSW Tubeless disc brake wheel?
The maximum tire pressure for all Zipp hookless Tubeless compatible rims is 72.5psi / 5 bar. See our tire pressure guide here.    See more
• What is the minimum tire width for Zipp 858 NSW wheel?
The minimum tire size is 25mm wide, while the maximum width is 32mm. Zipp recommends a 28mm wide tire to maximize speed. See more
• What model spokes and nipples are used in the Zipp 858 NSW wheelset?
The Zipp 858 NSW wheelset uses Sapim CX-Ray spokes, with a spoke count of 20. Built with external alloy nipples in a two-cross spoke pattern for the front wheel, the rear wheel has a radial laced d... See more
• What are the overall dimensions of the Zipp 858 NSW hookless disc brake rim?
The 858 NSW rim has an undulating 82mm deep rim shape with a 23mm internal width hookless rim profile and maximum outside width of 27mm. See more
• Is the Cognition V2 disc brake hub 6-bolt or Centerlock interface?
The Cognition disc hub uses a Centerlock rotor interface. Lock rings are included with all aftermarket Zipp Centerlock wheels.  See more
• How many points of engagement does the Zipp Cognition V2 rear hub have?
The Zipp Cognition V2 hub has 54 points of engagement in the new Axial Clutch system.  See more
• What are the benefits of the new Zipp Cognition V2 hub vs. the original Cognition hub?
Cognition hubs with Axial Clutch technology reduce drag by disengaging the ratchet mechanism when coasting. The new generation of our Axial Clutch in the Cognition V2 hub uses Sylomer (an advanced ... See more
• Can the new Zipp Axial Clutch V2 be retrofitted to a current Cognition hub?
No, the Cognition V1 hubs can’t be upgraded to the new spring system. The change to the hub design will not allow for a swap of internal parts as an upgrade. See more
• What spring clutch does the new Cognition rear hub use?
The new Cognition rear hub with Axial Clutch V2 technology reduces drag and lowers friction with a new Sylomer spring system with 54 points of engagement. See more
• What hub does the Zipp 858 NSW disc brake wheelset use?
The new Zipp 858 NSW Tubeless wheel uses the Cognition hubset (V2) with a Centerlock disc rotor interface.  See more
• What is CiR, and how is it used in Zipp 858 NSW Tubeless disc brake wheels?
CiR, or Carbon internal Reinforcement, is Zipp’s new NSW laminate technology.  Most carbon rims have uniform thicknesses around the rim, but the forces exerted on the rim are not uniform. CiR place... See more
• What is the weight of the new Zipp 858 NSW Tubeless disc brake wheelset?
The new Zipp 858 NSW Tubeless disc brake wheelset weighs in at 1530g (716g front, 814g rear), based on 12mm thru axle end caps and XDR driver rear hub configuration. (No tape or valve included in w... See more
• What is the benefit of the sawtooth shape of the Zipp 858 NSW rim?
Our proprietary Sawtooth rim profile takes design cues from nature for our highest performing wheel when it comes to aero efficiency and crosswind stability. The Hyperfoil nodes provide structural ... See more
• What is the MSRP of the new Zipp 858 NSW Tubeless disc brake wheelset?
The MSRP for the 858 NSW Tubeless disc brake wheelset is $4400 USD / €4000* / £3750* / $6630 AU (*includes VAT) See more