This Zipp Cognition Freehub Body is a high-quality replacement part specifically designed for Gen 2 Cognition hubs. These hubs, manufactured after the 21st week of 2018, are easily identified by a serial number of 21P8 or higher and feature a refined one-piece axle system. This freehub allows you to convert or refresh your Zipp wheelset to run SRAM 12-speed road or mountain bike drivetrains.

The kit includes a 1.8mm spacer, ensuring full compatibility when mounting XD cassettes onto the XDR driver body. Built with precision to maintain the instant engagement and low-friction performance that Cognition hubs are known for, this component is essential for riders looking to optimize their gear range or move to a modern wireless drivetrain setup.

Quick Facts

Feature	Specification
Driver Body Type	SRAM XDR / XD Compatible
Hub Compatibility	Zipp Gen 2 Cognition (Serial 21P8 or higher)
Axle System	One-piece axle design
Included Accessories	1.8mm spacer for XD cassettes
Axle Standards	End caps sold separately
Intended Use	SRAM 11/12-speed road and mountain bike drivetrains