Industry Nine All Mountain Review

Pro Reviews Wheels

The very trick looking hub shell body is CNC machined from 7075-T651, while the freehub uses 7068 alloys for durability and strength (20% stronger), and they turn on one piece aluminum axles and use sealed industrial Japanese ABEC grade 5 bearings. The freehubs come in two different engagement configurations, 3 or 6 degree (3 degree tested).

I9_rear

The freehub uses an arrangement of two sets of three pawls (the second one is phased three degree’s from the first), which are made from A2 tool steel, and each has three points, for 9 points of contact per set. They interface into a A2 hardened 60 tooth drive ring, giving 3 degree’s of engagement, for a final whooping 120 points!

Driver – 120 points, 3 degree engagement, 6 pawl mechanism, 60 tooth ring

I9_freehub

They are lightweight for an All Mountain wheelset, coming in at svelte 1663 grams for the test pair, which were spec’ed with 20mm front and 12x135mm rear thru axles.

Measured Specs:

  • Front – 747.1 grams
  • Rear – 915.5 grams
  • Total – 1662.6 grams
  • Rim width – Inner 20.83mm, Outer 26.2mm

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About the author: Brian Mullin

Brian has been part of the Mtbr team since 2007, where he has become an integral member of the review and test staff, specializing in technical articles. He likes to push the limits in all the sports he obsesses in, whether it's mountain biking, whitewater kayaking, extreme skiing, or sport climbing. He takes those same strengths and a good dose of insanity to his reviewing and writing on mountain biking products, creating technical, in-depth and hyperbolic articles. Whenever he's not on the bike, he might be found watching MotoGP racing, otherwise look for him out on extremely technical singletrack.


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  • cojacket says:

    One correction: Galling can happen to parts made of the same material. In this case the anodizing prevents it, not the material selection. Good review though!

  • Brian Mullin says:

    cojacket: You are correct, and thanks for info, and the article has been corrected. If it was hard anodized they will not gall, but it could be more of a regular decorative anodizing, and then durability would be an issue, but the spokes are not really going to be adjusted much? Not sure?

  • jen says:

    the machining in the first picture looks shit!

  • Kevin Kaehms says:

    I’ve had to constantly re-tighten my I9 spokes after every ride; yes they’re light, strong and have incredible engagement- but the spokes are continually coming loose.

  • Brian Mullin says:

    Kevin: My spokes have been fine, and have only needed minor tweaking. The wheels have stayed in true better than most?

  • Brad Fitkin says:

    I bought my I9 AM wheelset about 8 months ago, even though I read quite a few claims about I9 wheels that spokes constantly loosen, they break easily, the freewheel has too much drag, etc. I’ve given ‘em hell, and they’ve chewed it up and spit it out. I’ve had to tighten one spoke, haven’t broken one yet (got a few dings and a slightly bent one due to rocks, etc), and the initial drag on the freewheel has quickly become a total non-issue after break-in. Despite a single loose spoke and a slightly bent one, my wheels remain true. My goal was to upgrade my wheelset to top-shelf, install it and forget about it status, and these wheels have exceeded my expectations.

  • Kevin Kaehms says:

    Brian, what kind of wheel build do you have,(XC, all mountain, DH, etc…)? My I-9 build is a DH wheelset and I’m 200+lbs so I tend to be hard on equipment. Still no complaints with the hubs, but if I were to do it over again I’d probably go with their “classic” hubs & standard spokes- may be a heavier build, but because of my weight I tend to prefer durability over total bike weight.

  • TOU93 says:

    I’ve had I9 AM on my bike for just over a year now and they have been awesome! Mine are laced up with Stans ZTR Flow rims and have handled many days at DH parks. I’ve only had to true them once. If you read the instructions that come with them it says to get them re-tentioned after 4-6h of first riding them to make sure everything is fine.

  • Brian Mullin says:

    Kevin: AM setup, I am tough on wheels cause I do real low speed technical trials stuff, jamming a lot of torque onto the system, but I only weigh in at 155 lbs.

  • Jeff says:

    @ Kevin: The most common cause of chronic de-tensioning is overall low spoke tension. Have your bike shop tension the wheels and verify the tension with a Park or DT Swiss tensiometer. The conversion #’s are on Industry Nine’s website. If the wheels are properly tensioned, de-tensioning shouldn’t be an issue.

  • mc says:

    Great review! These are so much stiffer than my Hadley/Flow combo I was running. Engagement is about the same, but lateral stiffness if noticeable. Got them running tubeless with just two passes of Stans Yellow tape and WTB TCS tires. No issues so far and holds air just like my Stans did. Worth the extra money.

  • Brad says:

    I have a set of the I9 proprietary enduro hubs. They are tough as hell , with very little truing at all. However; I am consisently having a problem with the rear axle coming loose, which results in a very loud creaking noise. Anyone else have this issue going on?

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