Zipp Freehub Kit - Cognition NSW, 11-speed, SRAM Bike Accessories_Stem Premium Materials: Upgraded #39 cell

Premium Materials: Upgraded #39 cell Yamamoto neoprene is paired with premium liners to maximize flexibility through the shoulders and arms

240mm WEIGHT (G) 1635 WEIGHT BASED ON Wheel set in lightest configuration: 12mm through axles and XDR body

Rim friendly compounds

Garneau won the prestigious Eurobike award for the X-Comfort Zone technology featured in this shoe

Titanium caliper bolts

Zipp Freehub Kit - Cognition NSW, 11-speed, SRAM Bike Accessories_Stem Premium Materials: Upgraded #39 cellFreehub bodies for Zipp Cognition hubs. 1. 8 mm spacer is included for use with XD cassettes For Gen 2 Cognition hubs manufactured after the 21st week of 2018 (serial number would be 21P8 or higher, such as 51P8) Gen 2 hubs feature a one piece axle system End caps sold separately