Zipp 454 NSW Rear Wheel - 700, 12 x 142mm, Center-Lock, XDR, Tubeless, Carbon, B1 Mountain FatBike Cranksets OS20 utilizes a larger diameter

OS20 utilizes a larger diameter tire design to increase rolling efficiency

Manufacturer Part Number: 152BLACK32

The honeycomb center tread provides virtually zero rolling resistance and unbelievable tread life

GCX cogs replace the largest cog on SRAM 11-speed XD cassettes for extra durability and to lengthen the cassettes life

Manufacturer Part Number: Y46K98030

Zipp 454 NSW Rear Wheel - 700, 12 x 142mm, Center-Lock, XDR, Tubeless, Carbon, B1 Mountain FatBike Cranksets OS20 utilizes a larger diameter454 NSW Tubeless Disc brake wheels are the ultimate choice for road racing, delivering everything the performance cyclist demands. The design fuses two of Zipps most advanced approaches; the Sawtooth rim profile and TSE, for an all encompassing approach to performance. At the center of the 454 NSW is the Cognition V2 Hubset, re engineered with an updated Axial Clutch V2 mechanism for quicker engagement and lower friction as well as improved