Industry Nine Hydra Classic Rear Hub - 12 x 148mm 6-Bolt Micro Spline Black 28H. Industry Nine Hydra Classic hubs are the heart of your wheelset everything revolves around them literally. Every Classic Hydra hub is made start to finish in Asheville NC. From turning and milling bar stock 7075-T6 aluminum for shells axles and encaps wire EDM cutting A2 tool steel for pawls and driverings to in-house anodization lab every step of design engineering manufacturing and assembly is done to exacting standards.

690 P.O.E. Hydra Freehub body engages every .52 degrees yeilding telepathic control

6 pawl 6 phase

115 tooth drivering

Easily serviced with no proprietary tools. Designed to keep you in the saddle and out of the service queue

Classic j-bend spoke interface

Steel cartridge bearings are durable