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Hydra Enduro S 27.5in Boost Wheelset
Drop in to any trail with confidence on the Industry Nine Hydra Enduro S 27.5in Boost Wheelset. By combining the high-engagement Hydra hubs with the proven rim profile of the Enduro 305, these wheels provide a responsive feel at the pedals and the rugged reliability you need to rip all-mountain terrain day in and day out. The I9 Hydra hubs are the snappy new hub option on the block, offering 690 points of engagement that propel you forward with an impressive 0.52-degree engagement, for one of the fastest hubs we've seen to date. They're laced up to I9's beefy Enduro S rim, providing a solid platform to tackle black diamond runs and all-day epics in the backcountry. And since they're constructed with 28 straight-pull steel spokes instead of the aluminum found on the 305's, you can enjoy them at a more approachable price that leaves you with extra cash for other upgrades, or even a few race entry fees.
The Hydra hubs build on Industry Nine's previous drive system, featuring a 6-pawl design like the Torch hubs, but the drive ring is boosted up to 115 teeth as opposed to the 60-tooth design found on Torch. The pawls are also independently phased, engaging in procession as the axle rotates, which allows the aforementioned 690 points of engagement with just 0.52-degrees between each engagement point. While this provides near-telepathic response when you apply force to the pedals, one of the primary benefits is increased durability. With the Hydra's independently phased system, you have one leading pawl that starts to take the load from pedaling, but because the pawls are phased close together and the tooth count is so high, as soon as you apply torque to the system a second, third, and sometimes even a fourth pawl start taking some of the load to disperse the force more evenly. Basically, Hydra uses the inherent flex in the drive system to ensure that a single pawl will never take the full load, minimizing wear and tear on the freehub body and drive-side bearings.
- Hard-charging rims laced up with high-engagement Hydra hubs
- 0.52-degree engagement for near-telepathic pedal response
- Hydra design reduces wear and tear on the hub internals
- Enduro S rims are built to handle rugged terrain
- Straight-pull steel spokes offer cost-saving durability
- 30.5mm internal width is ideal for 2.3 - 2.8in tires
- Made in-house at I9's Asheville, North Carolina facility
- Hubs are fully serviceable without any proprietary tools
- Item #NIN003T
- Rim Material
- Wheel Size
- Tire Type
- Rim Width
- [internal] 30.5mm, [external] 34.1mm
- Brake Compatibility
- 6-bolt disc
- Front Axle
- 15 x 110mm Boost
- Rear Axle
- 12 x 148mm Boost
- direct-thread straight-pull steel
- Spoke Count
- Max Rider Weight
- Claimed Weight
- Recommended Use
- enduro, trail
- Manufacturer Warranty
- 2 years
What do you think about this product?
August 10, 2020
Nearly Perfect Trail/Enduro Wheels
- I've put it through the wringer
As the other review states, the engagement with these Hydra hubs is awesome. Instant engagement, which is ideal when you are doing technical climbing. I have the Trail version of these, a bit lighter and narrower rims, but identical in every other way. I had the identical wheels in non-Hydra to start with, loved them. Got the Hydra version, and glad I did for the engagement. (The other wheels are my backups) Aluminum rims may not be as "cool" as carbon but I can't see why to spend $$ to get carbon rims. Sure, carbon is stiffer, but I've seen plenty of carbon rims blow up; whereas a hard hit aluminum rim will go out of true (badly at times) or taco. I have carbon wheels for my 29" bike, but swapped them for aluminum without any concerns.
January 3, 2020
- I've used it several times
If you're thinking of pulling the trigger, do it. I will never ride stock hubs again. the engagement is like all wheel drive: I'm getting up stuff I never could before. If I were a better rider maybe engagement wouldn't matter as much. The aluminum rims are pretty bomb proof. The engagement really makes a huuuuuge difference. Get em!
August 11, 2020
Are these sold in pairs (front and rear)?