Industry Nine Hydra Classic mountain hubs are loaded with features every rider will appreciate such as revolutionary 0.52 engagement, generously low weights and an intuitive layout that can be serviced without any proprietary tools.

• 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 in Asheville, NC
• 690 P.O.E. Hydra Freehub body engages every .52 degrees yeilding telepathic control
• Classic j-bend spoke interface
• Steel cartridge bearings are durable
• Easily serviced with no proprietary tools; Designed to keep you in the saddle and out of the service queue
• Bearing Type: Sealed Cartridge
• Center to Flange, Left: 27
• Center to Flange, Right: 42
• Color: Orange
• Defined Color: Orange
• Flange Diameter, Left: 58
• Flange Diameter, Right: 45
• Front Axle: 15mm Thru x 110mm
• Hub Drilling: 28
• Hub/Brake Compatibility: 6-Bolt Disc
• Spoke Interface: J-Bend
• Weight: 165