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  • Mercury Wheels - G1 Carbon Disc Wheelset - Tubeless - Black, 12x100/12x142

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  • Mercury Wheels - G1 Carbon Disc Wheelset - Tubeless - Black, 12x100/12x142

Mercury Wheels G1 Carbon Disc Wheelset - Tubeless

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sale $989.55 $2,199.00

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    • Black, 12x100/12x142, Shimano/SRAM
      sale $989.55

    25 Reviews


    Designed for the long haul.

    Bumpy gravel roads, light-duty singletrack, and tours across state lines call for a stout and supportive wheelset that's wide enough for running larger rubber, yet light and snappy when you're hammering up climbs and pedaling across miles of countryside. Designed for this very purpose, the Mercury G1 Carbon Disc Wheelset offers a superb balance of rolling efficiency, proven strength, and high-volume support for gravel exploration, bikepacking adventures, and long-distance tours.

    Sitting at a whopping 30-millimeters across (external width), the G1 Carbon Disc Wheelset supports higher volume tires in the neighborhood of 35 to 40-millimeters across, give or take a few millimeters for your riding preferences. Tubeless-ready rims allow you to drop the pressure of wider tires, in turn lending a smooth and supple sensation across rough roads and gravel surfaces. Ultimately, this means you'll conserve energy without the fatiguing feel of jarring bumps and excess vibration you've become accustomed to with gravel road exploration.

    Carbon construction maximizes stiffness, meaning you'll feel its snappy acceleration the instant you step on the gas. It's also stronger than its aluminum counterparts, ensuring longevity when you inevitably thrash 'em over jarring roads and unpaved surfaces. The G1 Carbon Disc Wheelset is designed for disc brakes and thru-axles, but is also adaptable to a front quick-release skewer, making it a great choice for a modern gravel world where no "standard" is ever really standard. Plus, its disc brake-compatibility means you won't have to worry about the loss in braking composure normally associated with a carbon road wheelset.

    • Stout and supportive hoops for gravel exploration
    • Carbon construction maximizes stiffness and strength
    • 30mm rim width for running larger tires of 35 to 40mm
    • Tubeless-ready for gaining traction and bump compliance
    • Mercury hubs sourced from mountain bike wheels ensure longevity
    • 24 Sapim double-butted spokes for low weight, reliable strength
    • Works with the disc brakes and thru-axles of modern gravel rigs
    • Converts to SRAM XD with Mercury's XD freehub body
    • Item #MCW000S

    Tech Specs

    Rim Material
    Wheel Size
    Tire Type
    tubeless, clincher
    Rim Depth
    Rim Width
    [internal] 24mm, [external] 30mm
    Brake Compatibility
    Front Axle
    12 x 100mm thru-axle, 15 x 100mm thru-axle (adapters included), quick-release (adapters included)
    Rear Axle
    12 x 142mm thru-axle
    Sapim Race (Black)
    Spoke Count
    Claimed Weight
    Recommended Use
    Manufacturer Warranty
    2 years

    Tech Specs

    • Reviews
    • Q & A

    What do you think about this product?

    Have questions about this product?

    Awesome wheelsets!

    • Familiarity: I've put it through the wringer

    1 year and counting. Lightweight and snappy right out of the box.
    I have some Hutch 42c tires mounted to them and they fit great. I've ridden through some very muddy and nasty conditions and the bearings still feel smooth. I was a little worried about the limited spokes on the rear but it has held up to my 190Ibs just fine. Highly recommend.

    Love my G1’s!

    • Familiarity: I've put it through the wringer

    Wow! Great wheelset at a great price. Over a 1200 miles on them with no issues. Super sturdy, light and very well built. I’ve been running 40mm tires and they’re good. Happy with my purchase.

    Loving them a year in, but beware!

    • Familiarity: I've put it through the wringer

    At least for the set I bought, their hubs were the old style (T model, not their 2018 hubs), which meant that I had to get a more expensive/older (???) version of Mercury's XD body to upgrade. This model wasn't on Competitive Cyclist, so I had no idea it existed. I bought the XD driver on here, it didn't fit, then went on to discover the other model on Mercury's site.

    TLDR: make sure you check the model # on the side of the hub: if it starts with a T, I'd contact Mercury to make sure you get the right XD driver.

    Apart from this confusion, I've used these with 42mm gravel tires and 28mm road tires and they perform flawlessly in both cases. Absolutely love these things.

    Mercury Gravel G1’s!

    • Familiarity: I've put it through the wringer

    The wheels are a big change from the Easton set. Lighter, wider and feel more responsive. Good hubs. Tubeless set up was very easy. Tough as nails and they stay true. Highly recommend.

    MTB- Cross Country and Gravel

      I bought these originally for my Scott Spark 710 (Cross country whip) for a much needed upgrade from the syncros wheels that came on it. I could navigate over a few uphill rocky section due to the performance of the rim and the 7 degree engagement in the hub.
      Since the trails are a mess at this time of year, I decided to mount a set of panaracer GK's and roll them on my gravel bike. I am not really a strava nerd, but I have noticed my times and speed improving.

      Great Wheelset

      • Familiarity: I've put it through the wringer

      Have put quite a few different rides on this wheelset, and it ticks all my boxes so far: light, responsive, takes abuse, stays true, no issues to speak of. The only thing left is a long-term review of the hub/bearings, but that will be another 6 months out.

      Fast and Fun

      • Familiarity: I've put it through the wringer

      Lightweight and snappy! While getting out of the saddle for a punchy climb you're rewarded with a burst of quickness, makes you want to charge up and over anything that lies in the way.
      I have some WTB 42 c tires mounted to them and they fit great, although I wish my frame could fit some 50s. With the weight that I saved with the wheels I feel pushing the larger tires wouldn't be too much harder and I feel that they would fit great.
      I've ridden through some nasty conditions and the bearings still feel good. I was worried about the limited spokes on the rear but it has held up to my 175lbs just fine and that has been on some rugged terrain.
      Only small complaint would be the decals but they came off easily and Mercury said they'd be willing to send some replacements.

      Love my new G1 wheels!

      • Familiarity: I've put it through the wringer

      I bought these about 5 months ago for my gravel bike and have put over 800 miles on these with no issues. Have been running 40c tires on them and they've been great. Super light with a very smooth hubset. Great job Mercury.


        Wheels arrived on a Friday afternoon, I got them ready for a cyclocross race the following morning (I know, you're not supposed to make big changes the day before a race). First thing I noticed was the width, these things are wide! 31mm Vittoria Cross XG tires barely go past the sides of the rim. Calipers measure them 35.5mm with 30psi. Cornering was much better than any wheels I'd used for 'cross. Switching the front for 15mm t/a was simple. Wheels are nice and light. Only complaint is that the valves are just barely long enough, another 10mm would be nice. Hard to get sealant in with the injector, the head doesn't have enough valve to sit on. My only question now is, how are these so cheap?? Can't wait to do a longer gravel ride with 38mm tires, should be super plush.


        Leadville Slayer

        • Familiarity: I've put it through the wringer

        Designed for the long haul is right! These preformed flawlessly, the lightweight rim and build helped out so much. Trained with some klunker wheels and it was a great idea. When I jumped on these wheels, it felt like there was zero resistance.

        Unfortunately I took a spill trying to pass in a sketchy section and I wasn't feeling too hot but the bike and wheels held up strong.

        Zero complaints and would recommend them to anyone looking for speed and quality at a killer price!

        Leadville Slayer


        • Familiarity: I've put it through the wringer

        I have had G1 wheels for 7 months now. I'm running Schwalbe 700x38 tires on them. This combination works great. .These wheels are amazingly light and tough as nails plus they look great. Thanks Mercury!

        Awesome Upgrade

        • Familiarity: I've put it through the wringer

        I couldn't be happier with these wheels. For the price, I really don't see how they could be beat. They came with every type of hub configuration so I have options as to which bike I mount them on. I'd say it's the best investment I've made for one of my bikes.
        I accidentally threw away one of the end caps because it was stuck on the protective cap and the Mercury crew was nice enough to get one to me within a couple of days so I could get rolling.
        Out of the gate it was easy to notice these are fast wheels. The acceleration was mind blowing, felt like I was cheating. Riding with friends that I'd struggle to keep up with was no longer a challenge. First time hitting the dirt was great, being able to shoot up punchy climbs with ease really helped shave time off of the overall ride.
        Hats off to Mercury!

        Broken rim, no warranty

        • Familiarity: I've put it through the wringer

        Products don't hold up and warranty coverage is worthless. I rode wheels that were less than one year old in Dirty Kanza 200 2018 and broke the rear rim. I was riding the G1 carbons, which are specified for gravel use and they were less than one year old with 40mm tires. The rim broke on a hit that I would consider standard for a gravel road and I watched literally hundreds of riders hit the same spot after me with no problems (though occasional cussing). There is no obvious point of impact on the rim, and certainly nothing hit it from the side. Nevertheless, Mercury refused to warranty it and wants to charge me $299 to replace the rim, plus $100 for shipping to Canada. So to summarize: a brand new wheelset runs $999 from Competitive Cyclist, but Mercury wants me to pay $399 to replace a rim that failed under proper use in less than a year? I'd be hesitant to ride a replacement wheel if it was free as it should be under the warranty. But pay $400 to replace a rim when I can get a brand new wheel for ~$500? Um, no thanks--I'll put that money toward more dependable wheels from a company will stand behind their warranty. (FWIW, Competitive also didn't help or respond to email about this.)

        Broken rim, no warranty

        Update: Competitive did reach out to both me and Mercury to try and help but Mercury didn't budge. So, if you want a tire that doesn't hold up with extremely poor manufacturer support then Mercury is the company for you. But kudos to Josh at Competitive for trying to help.

        Light and Fast!

        • Familiarity: I've put it through the wringer

        Couldn't be more impressed. For as light weight as they are I was a little worried about them flimsy on rugged descents but these are still plenty stiff.
        Currently running 40c Clement X' Plor and they fit and roll great.

        Love these G1 wheels!

        • Familiarity: I've put it through the wringer

        Purchased a set of these wheels initially for a 100 mile gravel race. I am a bigger guy and put a lot of pressure on wheels and have had issues in the past with wheels not holding up. These wheels are amazingly light and tough as nails needless to say, will now be permanently on the bike not just for racing. Highly recommend!

        Great wheelset at great price

        • Familiarity: I've put it through the wringer

        Very happy with this new carbon wheelset as an upgrade to my factory wheels. These are very light and extremely durable. Over a 1000 miles on them with no issues. Get yourself a set and you won't be disappointed.

        Wide and Light

        • Familiarity: I've used it several times

        First off, these are the widest rims I've been able to find, apart from full-on MTB hoops.
        I'm an eager bandwaggonner on the wide-tires-are-faster trend, so I've been looking for affordable 28mm+ wide rims for a while.
        Zipps are deeper and lighter, but also cost more than 2x these and have narrower inner AND outer rim widths. Similar for ENVEs.
        Hunt wheels have a gravel wheelset that's similar to this, but a bit narrower, shallower, and more expensive, albeit a bit lighter.

        My plan is to use these for some collegiate road racing and cyclocross in the near future, and probably more bikepacking and gravel grinding later on. I'm confident these wheels will be awesome for just about anything.

        Some other bits of info not on this page:
        1. Seems like 26 point engagement in the freehub, has a good sound. XD driver (for 10-42t cassette) upgrade is about $60 on Mercury site, looks easy to swap.
        2. Wheels come with 12mm, 15mm, and 9mmQR axle adaptors for front, and don't need more than a strong grip to swap. Super easy.
        3. decals had some bubbles on the glossy top layer, so I took it off. Left a bit of residue, but once that's gone, bam, you have matte decals.
        4. Comes with tubeless tape, but you have to install it yourself.
        5. The rim well is pretty deep, tire mounting isn't bad at all (with 28mm GP4000SIIs, which I've been told are tough).
        6. Non-hooked beads, which don't really affect anything, but it makes them a bit lighter apparently

        Amazing Quality at a Great Price.

        • Familiarity: I've put it through the wringer

        Super happy with this carbon wheelset as an upgrade to the factory alloy wheels on my gravel bike. Out of the box, they are incredibly true. Great product totally worth the money.

        On the Mercury website it states that these wheels ship with the adapters to switch to QR and to 15 mm in the front. Do those come included if the wheels are purchased from Backcountry? If not can you get them and for how much?


        My set came with 12mm and 15mm Thru-Axles and QR adaptors for the front. The back didn't come with any adaptors, just the 12mm Thru-Axle. I think you can get a QR adaptor for the back from the Mercury website though.