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Industry Nine
Hydra End Cap Kit

5 out of 5 stars
1 Review
$30.00 - $40.00
Up to 10% off

Style & Size:


Why We Like The Hydra End Cap Kit

The Hydra End Cap Kit fits Industry Nine wheelsets that are equipped with Hydra hubs. There are options to fit axle spacings ranging from Quick-Release all the way up to Super Boost, as well as Torque Cap options for RockShox suspension forks.


  • Replacement end caps for Industry Nine Hydra hubs
  • Each set includes one driveside and one non-driveside end cap
  • Please check the drop-down menu for compatibility
  • Item #NIN1WU5
Industry Nine Hydra hubs
1 driveside, 1 non-driveside end cap
mountain biking, cycling
Manufacturer Warranty
2 years

Overall Rating

5 based on 1 ratings

Review Summary

1 Stars - 0 reviews
2 Stars - 0 reviews
3 Stars - 0 reviews
4 Stars - 0 reviews
5 Stars - 1 reviews

Fits True To Size

Screen reader users: the following list provides a visual scale to illustrate the product fit. Please refer to the heading above for the fit type in text.
Runs smallTrue to sizeRuns large

What do you think about this product?


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5 out of 5 stars

April 15, 2022

They're endcaps...

I've put it through the wringer

I mean, how much is there to review? But saying that, they're machined to very exacting tolerances, like all I-9 hardware. They fit snugly on the axle while still being easy to pop off when you need to remove them, so 5 stars for the lowly little endcaps! I was a little miffed that the torque cap endcaps from my old I-9 Torch hubs didn't fit the Hydras, but I guess that's the cost of progress. Looking at them, I understand the engineering reason for the change, so ok - the new axle design should reduce wear on the bearings.

Jon G

Originally reviewed on