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

Bearing Type	Sealed Cartridge
Cassette Body Type	Shimano Micro Spline
Center to Flange, Left	55
Center to Flange, Right	49
Color	Black
Defined Color	Black
Flange Diameter, Left	58
Flange Diameter, Right	60
Hub Drilling	32
Hub/Brake Compatibility	6-Bolt Disc
Rear Axle	12mm Thru x 197mm
Skewer Included	No
Spoke Interface	J-Bend
Weight	360