Industry Nine Hydra Classic MTN Hubset - 28h | 20x110 Boost / QRx141 | 6-Bolt HG | Black
Hubs
Industry Nine Hydra Classic MTN Hubset - 28h · 20x110 Boost / QRx141 · 6-Bolt HG · Black
Industry Nine Hydra Classic MTN Hubset - 28h | 20x110 Boost / QRx141 | 6-Bolt HG | Black
The Industry Nine Hydra Classic MTN Hubset is the original Hydra-generation hub that put I9 on the wheel-builders' short list back in 2019, with a 690 points of engagement freehub (0.52 degrees between each engagement) that was a generational leap over anything else on the market when it launched. Read the overview
At a glance
- Model
- H2MBBBRY1
- Generation
- Original Hydra
- Engagement
- 690 points / 0.52 degrees
- Front Axle
- 20x110mm Boost thru-axle
1 in stock
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Overview
What Makes the Industry Nine Hydra Classic MTN Hubset the Reference Standard for High-Engagement Hubs?
The Industry Nine Hydra Classic MTN Hubset is the original Hydra-generation hub that put I9 on the wheel-builders' short list back in 2019, with a 690 points of engagement freehub (0.52 degrees between each engagement) that was a generational leap over anything else on the market when it launched. Every Hydra Classic hub is machined start to finish in I9's Asheville, North Carolina facility from 7075-T6 aluminum bar stock, with A2 tool steel pawls and drive rings wire-EDM cut in-house and anodized in their own lab. Six independently-phased pawls running on a 115-tooth drive ring deliver immediate, telepathic power transfer the moment you weight the pedals, the kind of engagement that matters most on technical climbs where every fraction of a crank rotation counts.
This particular hubset is a 28-hole front and 28-hole rear configuration in stealth black, built for a 20x110mm Boost front axle paired with a QRx141 quick-release rear, ISO 6-bolt rotor mounting on both hubs, and a Shimano HG (HyperGlide) freehub body for 8 through 11-speed cassettes. The 20mm thru-axle front is the gravity-oriented option for riders running dual crown forks, beefier single crown forks, or older 20mm-spec frames. The QR rear pairing makes this configuration ideal for older trail and all-mountain frames that predate the 12mm thru-axle standard but still want world-class engagement and I9 build quality. MPN: H2MBBBRY1.
All the specs
18 specs in 3 groups. Open a group, or expand them all.
Sensors and connectivity2 specs
- Rotor Mount
- ISO 6-bolt (front and rear)
- E-Bike Compatibility
- Class 1 compatible
Build and box2 specs
- Color
- Black
- Hub Shell Material
- 7075-T6 aluminum
Other details14 specs
- Model
- H2MBBBRY1
- Series
- Industry Nine Hydra Classic Mountain
- Generation
- Original Hydra (now superseded by Hydra2)
- Engagement
- 690 points / 0.52 degrees
- Drive System
- 6 independently-phased pawls, 115-tooth drive ring
- Front Axle
- 20x110mm Boost thru-axle
- Rear Axle
- QRx141 quick release
- Front Hole Count
- 28h
- Rear Hole Count
- 28h
- Freehub Body
- Shimano HG (HyperGlide), 8-11 speed compatible
- Spoke Standard
- J-bend
- Bearings
- 4-bearing layout with oversized axle and external seals
- Origin
- Designed and manufactured in Asheville, North Carolina, USA
- UPC
- 197769449307
FAQ
Good questions
Get to know Industry Nine
There's more to Industry Nine than this one product. Our Industry Nine page has the full Industry Nine lineup we carry and more about the brand.
Visit the Industry Nine page →Is this the original Hydra or the newer Hydra2?
This is the original Hydra hub (690 points of engagement, 0.52 degrees), released in 2019 and produced through 2024. Industry Nine has since launched Hydra2 with 870 points of engagement (0.41 degrees) and a thicker axle, but the original Hydra is still a top-tier hub with proven performance and shares the same in-house manufacturing process and lifetime engineering support from I9. We have these in stock from a prior order and are offering them at a significant discount to clear.
Why is the rear hub a quick release instead of a thru-axle?
This configuration is built for older trail and all-mountain frames that predate the 12mm thru-axle standard but still use 141mm rear dropout spacing. If your frame uses a 12x142 or 12x148 thru-axle, this is not the right hubset for you. Confirm your frame's rear axle standard before purchase.
What does the 6 pawl, 115 tooth drive system do that other hubs do not?
Standard ratcheting hub designs have all the pawls engage the drive ring at the same time, which limits the engagement points to the number of teeth on the drive ring. Hydra independently phases each of its six pawls so they engage at offset positions, multiplying the effective engagement points by 6. The result is a continuous procession of engagement points rather than a step function, producing the telepathic feel that defined the Hydra platform.
Can I service these hubs myself?
Yes. Industry Nine specifically designed Hydra to be serviceable with standard shop tools, no proprietary tooling required. Bearings, pawls, springs, and drive rings are all user-replaceable, and parts are available directly from I9. Most riders can do a full freehub service at home in under 30 minutes.
Reviews
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