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Hydra Classic Front Hub

Hydra Classic Front Hub - Main image
$120 $240 In stock

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
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Standard Shipping: Handling (business days) 0–1; Transit (business days) 7–15.

Express Shipping: Handling (business days) 0–1; Transit (business days) 7–15.

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Delivery costs

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Standard Shipping · United States: $0.00

Express Shipping · United States: $3.99

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Returning an item

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United States · Return window (days after delivery): 30. Return method: By mail. Return postage: Seller pays.

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Customer Reviews (4.6 / 5 · 5 reviews)

Joshua C. ★★★★★

The 0.52° engagement is no joke—instant power transfer when I need it. I had the whole thing apart for cleaning in under 10 minutes, which is way easier than my old hubs.

Emily ★★★★★

Swapped these onto my trail bike and the pickup is instant — no slop in the pedal stroke when I'm ratcheting through tight rock gardens. The low weight is noticeable too, the front end feels livelier than with my old hub.

Ava ★★★★★

The 0.52° engagement is the real deal — no more dead spots when I'm ratcheting up rocky switchbacks. Lacing them up was straightforward and they're noticeably lighter than my old set.