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: 41
• Center to Flange, Right: 29
• Color: Black
• Defined Color: Black
• Flange Diameter, Left: 58
• Flange Diameter, Right: 60
• Hub Drilling: 28
• Hub/Brake Compatibility: 6-Bolt Disc
• Rear Axle: 12mm Thru x 157mm
• Skewer Included: No
• Spoke Interface: J-Bend
• Weight: 304