Industry Nine 1/1 MTB Rear Black ISO 6 Bolt Disc Hub
The Industry Nine 1/1 is the hub Industry Nine makes for riders who want Asheville machining and reliability without the Hydra's price or its 870 points of engagement. The 1/1 uses a dual-phased six-pawl driver on a 45-tooth ring for 90 points of engagement, four degrees, which is quicker than most hubs at its price and plenty for trail riding. It has a labyrinth radial lip seal and end-cap proximity seals to keep water out, high-capacity bearings, and it is CNC-machined, anodized and assembled in Asheville, North Carolina. This page covers the Industry Nine 1/1 MTB Rear Black ISO 6 Bolt Disc Hub, the mountain-bike version in Boost or Superboost spacing.
The 1/1 is not sold bare. You choose the rim and the rest of the build in the configurator, and it ships from our shop in Georgia laced, tensioned and trued by hand.
Design and construction
The 1/1 freehub runs six pawls in two phased groups of three on a 45-tooth drive ring, so three pawls engage at once and the other three sit half a tooth behind, which doubles the engagement points to 90 and spreads the load over three pawls rather than one. The seals are the part Industry Nine is proudest of: a labyrinth radial lip seal on the freehub and proximity seals at the end caps that keep mud and pressure-washer spray out of bearings that were already oversized for the job.
The shell is machined from aluminum bar with J-bend flanges in 28 and 32 hole, black anodized, with centerlock or 6-bolt rotor mounts. End caps convert between 15 x 110 Boost front and 12 x 148 Boost or 12 x 157 Superboost rear, and freehubs swap between HG, XD and Micro Spline without tools.
How it rides
A 1/1 is quiet, quick and unbothered. Four degrees of engagement is fast enough that you never notice a dead stroke on a trail climb, the freehub is much quieter than a Hydra, and the seals mean the bearings last through wet seasons that kill lesser hubs. It is the hub we suggest when a customer wants Industry Nine quality on a trail bike and would rather put the difference into a better rim.
We build the 1/1 for trail, enduro and e-bike wheels; for instant engagement and colors the Hydra 2 is the step up.
Specifications
| Position | Rear |
|---|---|
| Axle options | QR 5x141mm Boost Rear, Thru Axle 12x148mm Boost Rear, Thru Axle 12x150mm Rear, Thru Axle 12x157mm Super Boost Rear |
| Driver bodies | Shimano HG 8,9,10,11 & Road 12spd, SRAM XD 10,11 & MTB 12spd, Shimano Micro Spline 12spd |
| Drillings | 28h, 32h |
| Spoke head | J-bend |
| Brake | 6-bolt disc |
| Left flange diameter | 58 mm |
| Right flange diameter | 60 mm |
| Spoke hole diameter | 2.6 mm |
| Weight | 297g |
| Material | Aluminum |
| Finishes | black |
This listing
This is the 6-bolt version: QR 5x141mm Boost, Thru Axle 12x148mm Boost, Thru Axle 12x150mm, Thru Axle 12x157mm Super Boost, 28h, 32h drilling, about 297g, in black. Same internals and flanges as every other 1/1; only the mount and axle differ.
Six-bolt is the original disc mount and still the most universal: any ISO 6-bolt rotor from any brand bolts straight on, rotors are cheap and easy to find anywhere, and the six-bolt flange is a robust, simple interface that has been on mountain bikes for twenty-five years. Centerlock rotors do not fit it.
Sizes, fit and compatibility
The Industry Nine 1/1 MTB Rear Black ISO 6 Bolt Disc Hub comes in the drillings listed on this page with the axle, rotor and driver options shown in the configurator. J-bend spokes in any gauge; we build most 1/1 wheels with Sapim Race or D-Light spokes or DT Competition and brass nipples.
It pairs naturally with Industry Nine's own Grade 300, Triad and Sector rims, and with DT Swiss, Race Face, Stan's, WTB, Reserve and Nox rims that match its drilling. Give the configurator your bike type and weight; it picks a sensible spoke count and lacing pattern, which you can override.
Build a wheel around it
Offered for mountain bike, fat bike and tandem and e-bike builds in our Custom Wheel Program. Start with the Industry 9 1/1 MTB Rear Black ISO 6 Bolt Disc Hub and the configurator pins it for you, then checks each choice you make against it.
What Industry Nine says about testing
Industry Nine states it "has been anodizing & machining hubs, spokes, and drive systems in Asheville, NC since 2004" and that it engineers and manufactures every component of its hub and wheel systems in-house, including hub shells, axles, spokes and anodizing: "If it moves inside an I9 hub, we made it." Coverage of the Hydra2 launch (March 2025) reports Industry Nine drew on data from over 100,000 Hydra hubs in use to redesign the hub, with a 65% thicker axle "engineered for superior stress dissipation", larger 6903 bearings throughout, a labyrinth channel and full-contact radial lip seals against contamination. Industry Nine publishes no bearing-cycle, salt-spray, ISO 4210 or laboratory test figures for its hubs.
Hydra2 has 870 points of engagement at 0.41 degrees from a 145-tooth drive ring, and Industry Nine claims 60% less coasting drag than the original Hydra (690 points at 0.52 degrees). Launch material cites larger 5.5mm pawl pockets giving 26% improved force dissipation and says the hub is "specifically designed to handle the high torque demands of powerful E-bike motors".
Industry Nine's videos
Certifications
- Made in USA (Asheville, NC) — Industry Nine states hubs, spokes and drive systems have been anodized and machined in Asheville, NC since 2004; site tagline "HANDBUILT - ASHEVILLE, NC - KAMLOOPS, BC" (source)
- 5-year hub warranty — Parts, labor and return shipping years 0-2; parts only years 3-5; original purchaser; bearings excluded (source)
Sources on Industry Nine's site:
- About Industry Nine
- Industry Nine Warranty
- Industry Nine Hydra 2 Hubs (product page)
- Industry Nine Support Documents
- Industry Nine Hydra2 Support
Industry Nine publishes those results; ProWheelBuilder builds the hub into a wheel and does not test it in a lab.
Building it at ProWheelBuilder
Industry Nine makes the 1/1 in Asheville, North Carolina; ProWheelBuilder is an independent custom wheel builder in Georgia and not the manufacturer. Every 1/1 wheel we build gets spokes cut from the measured ERD of the rim, staged tensioning with a gauge, stress relief and a final true before it ships.
In the configurator you will only see parts that fit this drilling; combinations that are not made are struck through, and the price updates as you pick.
Warranty
Industry Nine's warranty. Industry Nine covers its hubs against defects in materials and workmanship for five years from purchase, with two years on the anodized finish. Its alloy and carbon rims carry a lifetime defect warranty to the original purchaser, with parts, labor and return shipping covered for the first two years and parts thereafter. Bearing wear, impact and crash damage are not defects.
ProWheelBuilder. Wheels we build around this part are covered by our own one-year warranty alongside the maker's. Within the year: broken spokes replaced regardless of cause, and the labor on the wheel - truing, re-tensioning or a complete rebuild - included. A manufacturer-covered rim or hub failure is a claim we make and manage for you; one they will not cover is answered with an eligible replacement at 25% off retail. Shipping each way is yours. Parts you supply yourself fall outside it.
Full terms are on our Policies & Warranty page.
1/1 MTB Rear Black ISO 6 Bolt Disc Hub questions
Will my rotors fit this hub?
This is the 6-bolt version: any ISO 6-bolt rotor bolts straight on with six T25 bolts, which is still the most common and the easiest rotor to replace anywhere. Centerlock rotors do not fit it - for those, take the centerlock version of the same hub, listed separately.
1/1 or Hydra 2?
1/1 for a reliable, quiet, sensibly priced Asheville-made hub with 90 points of engagement; Hydra 2 for 870 points, colors and the strongest axle and bearings.
Which freehub bodies fit the 1/1?
Shimano HG, SRAM XD and Shimano Micro Spline, swappable without tools and selectable in the configurator.
Is the 1/1 e-bike rated?
Yes, with e-bike-rated spokes. Its oversized bearings and steel drive ring suit trail e-bikes; tell the configurator it is an e-bike.
Does the 1/1 come in colors?
The 1/1 is black. Industry Nine's full color range is on the Hydra 2 and SOLiX.
Which axle spacing does it fit?
QR 5x141mm Boost Rear or Thru Axle 12x148mm Boost Rear or Thru Axle 12x150mm Rear or Thru Axle 12x157mm Super Boost Rear. Measure between the inside faces of your dropouts if you are unsure, or text us.
Does it need special spokes?
No. It takes standard J-bend spokes, which the configurator offers in every gauge and finish we stock.
Not sure? Text or leave a voicemail on 470-253-0929 or email info@prowheelbuilder.com — you will be talking to the people who build the wheels.
