X1 Carbon Enduro 29in Boost Wheelset
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Over the past five years we've seen a lot of advancement in mountain bike technology. From refined carbon frames with dialed geometry, to more reliable and effective suspension components, we as riders all benefit from the technological progression of this sport. When it comes to wheels though, there's a small Utah-based company called Mercury that believes more can be done. Their X1 Enduro 29in Boost Wheelset ups the ante in the carbon fiber wheel game by incorporating an advanced composite material they've mysteriously dubbed Fiber-X. Possessing twice the tensile strength of high-modulus carbon fiber, Fiber-X's damping characteristics deliver a trail-tuned ride while increasing the durability and impact resistance of the rim. The result is a stronger wheel that rides better than the competition, allowing you to push your limits on the trail without worrying about your equipment.
The Fiber-X material is blended into the center of the rim, distinguished by the prominent silver stripe in between the carbon. The design works by using an optimized trapezoidal rim profile that funnels trail input into the tough elastic material, dissipating impact energy and avoiding rim failure during violent impacts. The design also dampens the trail in a way that provides riders with a more comfortable and controlled ride—all without sacrificing the lateral rigidity needed for a precise and responsive steering feel.
At the center of the X1 Enduro Wheelset is the new Axis hub system. These hubs use stiffness-boosting straight-pull spokes that are hand-laced to the rim by Mercury's expert wheel builders. The freehub uses a triple-stepped 6-pawl mechanism that delivers an impressive 3.5-degree engagement, putting the Axis hubs right up there with the best offerings on the market.
Details
- Innovative carbon composite wheels built for enduro abuse
- Fiber-X material dissipates impact energy to avoid rim failure
- Trail-tuned rim delivers a more comfortable and controlled ride
- New Axis hubs offer responsive 3.5-degree engagement
- 30mm internal width works well for modern trail rubber
- Hand-laced, straight-pull spokes boost stiffness and durability
- 1700g claimed weight is impressive for a burly carbon wheelset
- Item #MCW1WUF
- Rim Material
- carbon fiber, Fiber-X
- Wheel Size
- 29in
- Rim Depth
- 24mm
- Rim Width
- [internal] 30mm, [external] 38mm
- Brake Compatibility
- centerlock disc
- Hubs
- Mercury Axis straight-pull
- Front Axle
- 15 x 110mm Boost
- Rear Axle
- 12 x 148mm Boost
- Skewers
- not included
- Spokes
- Sapim Race
- Spoke Count
- 28 / 28
- Max Rider Weight
- [rider + kit] 250lb
- Claimed Weight
- 3lb 12oz (1700g)
- Manufacturer Warranty
- 2 years
- Activity
- enduro, trail
Reviews
Q&A
Overall Rating
4.5 based on 10 ratings
Review Summary
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.What do you think about this product?
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Selecting an option will reload the available reviews on the pageMarch 8, 2022
Disappointed
- Familiarity:
- I've put it through the wringer
- Height:
- 5' 9"
- Weight:
- 160
These wheels were great until I had an impact to the rear rim (running 25psi with cush core) that resulted in a crack. I've tried working with Mercury to get a crash replacement for over 3 months to no avail. I understand that the supply chain is backed up right now, but 3+ months?! Wish I had spent a little more up front for a more reputable brand with better customer support.
September 6, 2021
Love my X1?s!
- Familiarity:
- I've put it through the wringer
- Height:
- 6' 4"
- Weight:
- 205
Going on 13 months so far. I've had these wheels on 2 of my mountain bikes and have been really impressed with the performance and how well they hold up over time. They're very lightweight and stiff and hold a line really well through rocky technical single track terrain. Love them!
September 4, 2021
Good Wheel, poor product support/service
- Familiarity:
- I've put it through the wringer
- Size Bought:
- 29"
- Height:
- 5' 9"
- Weight:
- 160
I bought my Mercury X1 Carbon Enduro Wheelset late last summer after reading all the five star reviews and reading Mercury's "warranty dude"/ FreddyMercury's post below (scroll to Andrew's review thread on 3 Aug 2020) that said the crash replacement was around $125. Even sweeter, the wheels were on sale when I purchased them. I have been riding them 2 days a week for about 10 months until last week when I caught a rock with my rear wheel. They have held true and been reliable until now in moderate terrain. Damage was debatably my fault as I didn't check my tire pressure before the ride and the tire may have been a little low. I contacted Mercury to arrange a crash replacement and heard back from Don. Even with the supply chain a mess from COVID, they were able to work me a crash replacement. It wasn't the $125 that I had initially expected but Don went out of his way to support a customer and they got me a replacement at a price that was better than fair after some coordination.
April 16, 2021
Solid wheelset!
- Familiarity:
- I've put it through the wringer
- Height:
- 6' 1"
- Weight:
- 195
I bought these X1 a couple of months ago to replace my stock wheelset on my Niner and I can definitely say it was well worth the money. The wheelset is stiff but with nice damping and light. I love the quick engagement of the new hub.
October 21, 2020
Impressive!
- Familiarity:
- I've put it through the wringer
Great rims with great hubs! This is my second pair of Mercury carbon wheels. They?re stiff, strong, and very light. Perfect for my enduro machine. Love the super quick engagement. Nice job mercury.
August 2, 2020
Bomber wheels!
- Familiarity:
- I've put it through the wringer
- Height:
- 6' 1"
- Weight:
- 210
Very happy with my X1 carbon wheelset as an upgrade to my DT factory wheels. These are very light and extremely durable. Super quick rear hub engagement. Running Maxxis Crossmark 2.25 tires and they ride great Over a 3100 miles on them so far with no issues. Get yourself a set and you won't be disappointed.
July 26, 2020
Happy
- Familiarity:
- I've put it through the wringer
- Size Bought:
- 29
- Height:
- 5' 8"
- Weight:
- 163
I’m very happy with these, I’ve Mountain biked every other day for over a month, in all types of terrain, and in different weather conditions, the rims are excellent, they feel wonderful, and hold up well to hard riding. This is definitely the best upgrade I’ve made.
June 8, 2020
Amazing Deal!!
- Familiarity:
- I've put it through the wringer
The X1 wheels are light and stiff but with nice damping effect. The engagement is right on. I ride very tech and find that the wheel track spot on. I have been riding these wheels for one year and they are still true. No issues at all. Highly recommend.
June 3, 2020
Best MTB Carbon Wheelset!
- Familiarity:
- I've put it through the wringer
Great wheelset that offers stable ride feel, balanced, snappy fast roll and looks great. Great quick hub engagement. I am stoked!
May 16, 2020
Nice!
- Familiarity:
- I've put it through the wringer
I?ve had these on my Niner for two seasons. These FiberX wheels have been great. They are stiff, track well through nasty rocks, yet never beat me up. The FiberX provides a nice damping effect. Great hub engagement with little drag. Great deal on this wheelset.
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