Save up to 30% on Bikes From Santa Cruz & More
This carousel displays a list of buttons that updates the main product image when a button is clicked
  • Options
  • Detail Images

Mercury WheelsX3 Enduro 29in Boost Wheelset

Temporarily Out Of Stock

Item # MCW001D

Don't get too bummed. This item is on the way and will be available for purchase as soon as it rolls into the warehouse.

View Similar Products

Keeping up with the demands.

As riders have pushed the limits of just how fast they can rip down technical terrain, the demands placed on their wheels and tires has dramatically gone up. To meet these demands, wheels have gotten much stronger, stiffer, and wider for accurate tracking across rough terrain, durability to ride unscathed across gnarlier terrain, as well as higher levels of grip when you're running modern trail tires in the realm of 2.3 to 2.6 inches in width. Spotting these trends in enduro and all-mountain riding disciplines, the savvy engineers at Mercury made the X3 Enduro 29in Boost Wheelset for reliable strength, high levels of stiffness, and better support with wider tires.

Made of alloy, the X3 Enduro Wheelset maintains high levels of strength and stiffness at a relatively low weight, but without draining your funds like costlier carbon wheels. The 30-millimeter internal width provides an optimal tire footprint when you're running modern trail tires in the range of 2.2 to a massive 2.8 inches wide. Since they're made with Boost spacing in mind, you'll enjoy increased wheel stiffness, thanks to an improved spoke bracing angle with the wider hubs. The two-cross spoke lacing pattern maximizes lateral stiffness, yet it offers a bit of vertical compliance for a smoother ride quality, especially over rocky terrain and rough trails.

Mercury laser welds the X3 Enduro to ensure a consistent, seamless rim that's well-balanced and without irregularities. The pronounced bead socket and flat rimbed allow you to easily set-up tubeless tires without excessive effort on your part. They're finished with Mercury's branded MTB Disc hub with sealed cartridge bearings for reliability and longevity, even in sloppy conditions. 28 Sapim Race double-butted spokes and Sapim brass nipples ensure a reliably strong wheelset, but without the excessive weight of burlier wheels with 32 spokes.

  • Mercury's signature alloy wheels for all-mountain and enduro
  • Redesigned with a lower profile shape for responsiveness
  • Alloy balances the needs of reliable strength with low weight
  • 30mm internal width optimally supports 2.2 to 2.8-inch tires
  • Two-cross lacing pattern and Boost hub spacing for stiffness
  • Mercury's branded MTB Disc hub with sealed cartridge bearings
  • Pronounced bead socket and flat rim bed for tubeless set-up

California Proposition 65


Cancer and Reproductive Harm -

Tech Specs
Rim Material
Wheel Size
29 in
Tire Type
tubeless, clincher
Rim Depth
19 mm
Rim Width
[internal] 30 mm, [external] 35 mm
Brake Compatibility
6-bolt disc
Mercury MTB Disc
Front Axle
15 x 110 mm Boost
Rear Axle
12 x 148 mm Boost
Sapim Race double-butted
Spoke Nipple
Sapim brass
Spoke Count
Recommended Use
enduro, trail
Manufacturer Warranty
2 years

Claimed Weight

Claimed weights are provided by the vendor.

Have questions? Chat with a Gearhead

[29in wheelset] 1813 g

View more 29" Mountain Bike Wheels - Tubeless

    What do you think about this product?


    >Rating: 2

    Blew the 2 second ride! :(

    There seem to be some quality control issues with these. They seemed good for the cost right up to the point they didnt work. Luckily when the crank started to spin out we had only been climbing so I could basically coast back 4-miles to the car. While this was an inconvenience Competitive Cyclist is working with me to make it right. I opted to spend more for a better known brand.

    >Rating: 4

    Not a bad wheelset so far.

    I've used it once or twice and have initial impressions

    I have only ridden around the neighborhood on them right now, but so far so good. Feel durable and sturdy. I am 5'7 an 220 so if they can hold me I am sure they can hold you. Tubeless set up was a cinch. I did not use the provided tape but went for the tried and true gorilla tape. Worked like a charm and set up quickly on a pair of Maxxis 29x2.4 Ardents on my Specialized Fuse. These wheels will convert my trail 27.5+ to a more XC hardtail oriented bike. Tubeless set up was a breeze which made it easy to like these and a quick romp though the 'hood and jumping some curbs make me think these will be fine out on the trail. Time will tell.


    How many engagement points (clicks per freehub revolution) do these hubs have?

    >Rating: 4

    Bang for your Buck

    I've put it through the wringer

    For the price, they are a really nice wheelset. Quality build, great rim design and top end spokes and nips from Sapim. The hub does require some extra care while mounting the rear into the frame but it is manageable. The threadless axle design might be a cool concept but could be better redefined. Most wheels at this price point would be significantly heavier. You get what you pay for and Mercury is a viable option.

    >Rating: 1

    Hubs are sub-par

    I've used it once or twice and have initial impressions

    I bought these wheels at a great price. Upon opening the box I pulled out the rear wheel and the end caps and rear axle popped out. Didn't think much of it. On Saturday October 5 at Slick Rock Practice loop the rear hubs exploded. It was literally my first ride on the wheel. I ended up buying a new rear wheel from Poison Spider to do my shuttle run. Rims and wheel built are seems great,, but their hubs are garbage.

    Probably a bad hub. But if the hub ends are pulled out for maintenance or otherwise as above be sure the drive side ratchets are aligned with their pawls and squarly seated before clamping that rear wheel in the drops!

    >Rating: 5

    Strong and Stiff

    I've put it through the wringer

    I have gone through a few wheel sets in the past few years. Stock wheels had a cheap hub and I blew up a free hub body so instead of fussing with it I purchased some RaceFace Arc's. They weren't bad but the hub loosened up every few rides and towards the end they would not stay true. Ended selling them to a friend who rides a bit more mellow. I got these wheels kind of based on price but for being a price point wheel they have not let me down. The engagement isn't the greatest but I've hammered them and have had zero issues. The wheels are light and stiff, much better than some 27.5 stan's I've ridden. If engagement is a concern of yours, don't be a wimp and buy some OYNX hubs. If you are after durability at a great price, look no further.

    >Rating: 3

    Three Pawls and 24 Points of Engagement

    I've used it once or twice and have initial impressions

    They seem nice enough out of the box, but the super loose axle endcaps allowed the axle to slide right out of the hub body when trying to pull the plastic protector off, and showed me that the freehub is 3 pawl with 24 POE. For a wheelset that retails at over $700, this is disappointing to say the least, but for $300, it might be worth it. Hoping that the six pawl freehub will double the POE and that the wheels hold up to the NC mountain lifestyle they are about to start living. Also, according to Mercury, these have different hubs than the 27.5 X3 Mercury wheels. Might be returning them as there is no 6 pawl option for the freehub.

    >Rating: 5

    Weekend Saver

    I've put it through the wringer

    Got these wheels as a quick and much needed replacement during a trip and they've exceeded my expectations. Was down in Moab when my rear hub exploded and ruined the ratchet ring, made for a lame 2 hour hike. Local shops had replacement sets but they were out of my budget. Thankfully one of the mechanics recommended Mercury and I decided to give them a shot to be able to continue the rest of my trip. Wheels did not come taped up but I was able to bead the tires up with a floor pump, which in my mind is a confidence booster. They have performed well in the last 4 months and I'd recommend them to anyone tire of fussing with their current set up.

    >Rating: 5

    Great wheelset!

    I've put it through the wringer

    I picked these wheels up a couple of months ago and couldn't be more please. Smooth rolling, light and tough as nails. They have been ridden very hard and they are as true as the day I got them. Plus hand built in the USA. Great job Mercury!

    >Rating: 4

    Good Wheels well worth the price

    I've put it through the wringer

    While these may not be the lightest, nicest, or newest wheels out there, they certainly have great bang for the buck. It is nice to have a wheelset that has all the current hub standards, and allows for you to run the new wide trail tires that are so popular nowadays.

    >Rating: 5

    Awesome wheelset at a great price.

    I've put it through the wringer

    Great price for tubeless ready, reasonable weight, mid width wheels. Couldn't be happier with the overall performance from this wheelset.