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  • Mercury Wheels - M5 Clincher Wheelset - Black

Mercury Wheels M5 Clincher Wheelset

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    • Black, Shimano/SRAM, New Brake Track
      sale $999.99

    40 Reviews


    The god of stealing races.

    It's appropriate that Mercury Wheels' name and logo reference a Roman god who is the patron of, among other things, travelers and thieves. Atop Mercury's M5 Clincher Wheelset, Eric Marcotte journeyed from his day job in Arizona to Chattanooga, Tennessee to nab the 2014 US national championship ahead of the pros of the European peloton. It's the ultimate race wheel for the working cyclist.

    If you're in the market for deep dish carbon rims, then you've probably already made the assumption that the number in the M5's name denotes a depth of 55mm. The rim's width is left out, though, and rim width is a big deal these days. The M5 is a solid 23.5mm wide, which means you can run lower PSI for a more comfortable ride that corners with unparalleled confidence. Wider rims also have some counter-intuitive effects when compared to those standard 19mm rims: they actually decrease rolling resistance and increase aerodynamics.

    The M5s' construction uses Mercury's Dual Carbon Layer Process, or DLP. DLP blends high- and mid-moduli carbon fibers to tease out the best balance between the lightweight and stiffness of the former and the fatigue-resistance and durability of the latter. DLP has also recently been updated with a newly engineered brake track material, improving stopping power over the previous, basalt-infused design. This increased confidence goes a long way toward addressing the poor braking that is one of the most common critiques of carbon wheels.

    The aerodynamic benefits of a deep dish rim are further complemented by Mercury's Seamless Transition Technology (STT), which integrates the brake strip with the rest of the rim in order to eliminate any obstructions to wind flow and reduce drag-causing turbulence. The result of this construction is a wheel that balances the above qualities with considerations of weight for what Mercury claims is its "most popular wheel by far."

    The M5s are finished off with Sapim's indefatigable CX-Ray spokes and Mercury's own hubs. The rear hub includes a generous six pawls for an engagement that's as close to immediate as anything we've seen on the market today, and the front hub has an extra-wide 72mm flange for reduced flex under hard efforts and confident stability at speed. Both hubs have a 15mm axle that reduces to accommodate a traditional quick release and two and four oversized bearings in the front and back, respectively.

    The Mercury M5 Clincher Wheelset comes with a Shimano/SRAM 11-speed compatible freehub body and includes skewers, valve extenders, brake pads, and rim strips.

    • Steal a march on the competition with carbon race wheels
    • Blend of carbon moduli to balance stiffness and strength
    • Brake tracks incorporate basalt fibers for better stopping
    • Integrated brake track reduces drag-inducing transitional ridges
    • Wide rims straighten allow lower PSI for smoother, faster ride
    • CX Ray Spokes and wide flanges for stiffer overall system
    • Includes a spare set of grey decals to match your team kit
    • Mercury Wheels proves you don't need to spend a fortune to race on carbon
    • Item #MCW0001

    Tech Specs

    Rim Material
    carbon fiber
    Wheel Size
    700 c
    Tire Type
    Rim Depth
    55 mm
    Rim Width
    [external] 24 mm
    Brake Compatibility
    Mercury Pro
    9mm quick-release
    Sapim CX-Ray
    Spoke Count
    20 / 24
    Claimed Weight
    [set] 1,625 g
    Recommended Use
    Manufacturer Warranty
    2 years

    Tech Specs

    • Reviews
    • Q & A

    What do you think about this product?

    Have questions about this product?

    Mercury M5c

      Best wheels I have ever used. Current set has roughly 15k miles, 2 plus years on them with zero issues! I have a total of 3 sets of Mercury wheels! M5c, M5T and S3c. All have been perfect with no issues! Thanks Mercury for the awesome wheels..

      Big Bang for the Buck

      • Familiarity: I've put it through the wringer

      I was going to upgrade my bike this year, but instead opted to pimp mine up a bit. Upgraded my DI2 setup to 11-speed, got these wheels and added a few other things. These wheels really woke my bike up. They accelerate well and handle very crisply. I have been out in some pretty gusty side winds and I did feel the added input, but it was never anything I couldn't easily correct - even at high speed - they are the perfect depth. They look great and the brakes work much better than I expected (I'm using the pads they came with) and very nearly as good as my aluminum wheels with Shimano pads. I know I made the right choice with these wheels and the price is the clincher (no pun intended).

      Excellent wheelset!

      • Familiarity: I've put it through the wringer

      I've got about 6000 miles on mine and have loved them. These have doubled as my every-day wheelset and my race wheelset. I'm pretty lazy and these make that easy because they perform great either way. They handle these rough roads around here with relative ease. I like em. Would buy again for sure.

      Great wheels at a great price

      • Familiarity: I've used it several times

      I've been riding Mercury for many years and I absolutely love their M5s.

      Mercury is always responsive when i have questions and i enjoy supporting a company that has given back to our local riding community.

      Better than I'd hoped

      • Familiarity: I've used it several times

      Got these for Christmas, delayed trying them due to rainy conditions. Glad I lost patience and went for it. With 25mm tires, these feel much better in the rain than regular wheels with 23mm and I've had no braking issues. No squeaking, didn't need different pads, and no trouble stopping efficiently in wet or dry. The valve stems rattled but it's an easy fix with electrical tape. These are my first aero wheels and I had some trepidation about crosswinds, but it's more a matter of getting used to the different handling than being a danger. When winds are over 15mph I may use my regular front wheel, at least until I've fully adapted to different feel of aero wheels. I'm small and need an advantage in headwinds, and these deliver. I'm looking forward to trying them in the mountains. Hoping braking holds up on long descents, but based on short rolling descents I'm not expecting a problem.

      Over 2,000 Miles On These This year

      • Familiarity: I've put it through the wringer

      Can't say enough good things about these wheels. Now, they're certainly not as light as my 38mm carbon tubulars, but for the money and replacement tire prices, they win hands down. I got these from CC on sale (on sale) back in late December 2015. At that time they were deeply discounted and on that particular day had an extra 10% off. I'm about 185 lbs and use these as my every day wheels. I've never had to true them at all. They just go and go. Brake track seems to hold up nicely,, given that around here we don't have a lot of long descents. I have hauled them down to 10 mph from 40 mph a couple of times tho with no issues. There is only one very small 'thing' re: the valve stems. If you are using tubes with valve stems that have no threading for a knurled nut, the valve stem will rattle against the rim opening. My solution: wrap a couple of rounds of black electrical tape around the stem just at the place where the stem comes through the rim to the outside. Rattle solved.

      Incredible Wheels at any price!

      • Familiarity: I've put it through the wringer

      Always looking for a good set of wheels, I took a chance on the Mercury M5 clinchers. I was a bit nervous since the price was right for my wallet (low enough for my wife not to notice), but researched them enough to find they are hand built in the US with their rims originating from taiwan.
      The initial brake pads were a bit noisy, so I emailed Mercury directly. They informed me they have a new brake pad (changed the compound) and actually sent me a free set and even threw in a t-shirt. The new brake pads solved the noise issue and seemed to add a better braking performance to boot.
      I have been riding these wheels for most of this season and wanted to wait to write a review until I had a few miles on them. I am giving them two thumbs up and am even considering buying a set for my wife.

      Horrible, avoid at all costs

      • Familiarity: I've used it several times

      When I got these I was super excited. I had done a good level of research and have been using carbon deep dishes tubular/clinchers for years, from Corima's to Zipps to Chinese knock-offs.

      These are worse than Chinese knock-offs. Once set-up they have rolled incredibly sluggishly, and lethargically. I'm getting out rolled down descents by 120 lb kids with Gatorskins.

      Also they are horrible in braking, and their stock pads are complete crap. The fact that you must use their pads or it voids the warranty should speak VOLUMES to how horrible the layup and schedule pattern on these are. I wish I could return them, and I'm really disappointed with CC for continuing to carry them and back them so heavily.

      I was hoping to have a set for Road races and Stage races where flatting was more of an issue and I wouldn't be using my tubulars. I'm just hoping I can somehow make up the loss of money I've endured from investing in this horrible off-brand wheelset.

      Stick to the major players, they are there for a reason and they are ridden by most for a reason, they work.

      I'm really surprised you're having such problems. I've experience none of the issues you have. The stock pads have been comparable to other carbon rims I've ridden and the rolling you are describing is exactly the opposite of my experience. Are you sure you don't have a pad rubbing or something?

      Great set of wheels

      • Familiarity: I've used it several times

      I'm a proponent of, 'you get what you pay for' so I was a little skeptical when the M5 wheel set was offered by CC at such a reduced price. I did some research and couldn't find anything negative. Decided to give it s go and purchased them. Loving the ride they provide. From my former Fulcrum wheels these are lighter, faster and smoother. No squeals on the brakes even as I applied them at 40mph. Well worth every penny, no; worth what the original asking price is, just a whole lot nicer when you save over a grand.

      Great wheels - can't beat the price

      • Familiarity: I've put it through the wringer

      I've been using these as my everyday/groups wheel and race wheel and they are great. They really come alive when you get up to speed and I'd recommend them to anyone. Parts are from over seas but wheels are hand built in Utah so I don't think quality control is an issue. They've seemed to stay true over the past few months I've run them. I like them more than the Mavic ksryium SLRs & 2009 zipp 404s I've owned in the past ( hubs aren't as good but I will be replacing the novatecs with tunes in the future). Wheel profile is great, similar width and design to ENVE.

      My only suggestion would be to buy quality brake pads at the time of purchase. The braking is manageable if you have adequate time to stop, but on steep descents with tight corners, stop signs or red lights these pads are LOUD and get HOT quick. Gets fairly embarrassing when everyone smells your burning brake pads and hears your ear piercing tires squeak. I'll be getting some swiss stop black princess and I'll report back on those.

      The Wheels of Champions

      • Familiarity: I've used it several times

      These wheels are amazing and at an amazing price they can't be beat. They are my first set of Carbon wheels the performance difference coming from aluminium wheels is incredible. As soon as i get over speeds of 18 MPH you really really start noticing the Difference . The only reason i gave them 4 stars is because of the brakes that they came with. I mean Yes they stop you.. But everyone from miles around will here you stopping. Even after toeing in the pads they were still incredibly loud. Also they seemed to wear down so extremely fast. You are better off just buying the nicer version of Mercury pads from the get go. other than that no complaints what so ever.

      Best deal for Carbon Wheels

      • Familiarity: I've used it several times

      I have been looking for a set of carbon clinchers for awhile. I had been looking at China specials but was just to scared to wast my money. Seeing the deal on these buy a reputable company and the two year warranty you cant go wrong. Compared to my 40mm alloy wheels these spin up much faster and just feel faster overall. Of course there is the small issue with everyone saying "nice wheels". The hubs are nice and quiet also. I am super happy with the wheels and the shipping was super fast!!

      Best deal for Carbon Wheels

      Best Value

      • Familiarity: I've put it through the wringer

      Great performance and great value. Fast precise wheels. Includes skewers, valve extenders, brake pads, and rim strips. Valve extenders work with 42 or 48mm Presta valve stems.

      Good upgrade

      • Familiarity: I've put it through the wringer

      I labored over the decision to buy these wheels for a year and am sorry I waited so long. If you are looking for an upgrade from a set of standard aluminum training hoops for everyday riding, you can't go wrong with these wheels.

      I bought a Ridley Fenix build from CC last year and it shipped with Aksium wheels. I wasn't thrilled with the wheels, but, figured they'd be fine for training and club rides. I was going to buy these Mercury wheels at the same time for faster club rides, the occasional crit and time trial and road race, but, figured I wasn't THAT serious and passed on them. Mistake number 1.

      Fast forward six months and a couple thousand miles - the Aksium free hub locked up and I had to send it back to CC for warranty. The team was great to work with, but, they had to send it back to Mavic and they estimated a month without the wheel. So, decision time: ride my old bike for a month, or, buy a second set of wheels? Again, I labored over spending $1k on a set of Mercury wheels or buy a replacement Aksium or a set of Ksyeriums. I didn't feel like I was ready to ride around on a set of 55mm Carbon wheels. I bought the Kyseriums. Mistake number 2.

      So, six months later, I'm more serious about riding and Crits and time trials and my wife asked me what I wanted for Father's Day. These wheels were exactly what I wanted - and I'm thrilled I got them.

      Whether or not the performance gains I got today were mental or real, putting 100 miles on them with 25mm Continental GP 4K IIs was a joy ride. At $1k a set, it is money well spent if you are a serious rider looking for a bit extra speed or watts saved when riding alone. Today, I did 50 miles with a friend and kept going another 50 solo in under six hours and the difference in ride quality, speed and energy output was noticeable compared to the Aksiums and Ksyerium Elites. They weigh less than the Aksiums and about the same as the Ksyeriums, but are so much better. I wish I had skipped the Ksyerium purchase and gone straight to these and keep the Aksiums for rainy days.

      Stopping power is as good as traditional wheels. I toed the pads and they didn't squeal at first, but, did - a little - under hard braking after a while. I'll adjust the tow a little more aggressively and I'm sure it'll go away. I see Mercury has a new style pad, so, I'll give those a try when these wear out.

      Front wheel had a very slight wobble, but, easy fix with a quarter turn of the spoke wrench.

      80mm priests valves are good. I'm not using the extenders.

      Thought I would hate the massive white logos, but, now I like them.

      Riding in <10 mph wind from all directions revealed no noticeable difference in handling - other than the first time a dump truck passed the opposite direction, the amount of sail effect on the front wheel caught me a little off guard.

      Overall, if you are looking for an upgrade to do some races and aren't serious enough to put $3k at risk, but, also, aren't comfortable at 50+ mph with cheap knock offs, these are a perfect fit.

      Edit: Update after a thousand or so miles: Still love them. Stopping in the rain takes more distance and can be disconcerting the first squeeze, but, are fine with finesse,

      Good upgrade

      Just keep going

      • Familiarity: I've put it through the wringer

      So this is my first set of carbon wheels and i love them. I've ridden with these in some pretty sucky crosswinds and kept going no issue. They do feel like a sail at times and take time to get used to but when you do you don't hold back. I have crashed with them and still not even a scratch or any issue didn't even need truing.

      Are these compatible with a 10 speed shimano cassette?

      How is braking in the wet, and how does it compare to Mavic Exalith's and HED Jet blacks in terms of stopping power.

      Hey Hans - The Exalith and HED Jet Black have these beat in terms of braking, but they are solid wheels nevertheless. Could be a great crit wheel or trainer set when riding flats. Let me know if you have any other questions.

      I just bought two sets of these last night. One for me and one for my wife. I was wondering how to tell if I got the newer style Mercury brake pads and how I could get them.

      Yeah. So the old brake pads look a little dull almost porous where the new ones are a more dense shiny look. Both work but the new ones are much better. Go to mercury wheels web page. You can get them there. Or better yet call their customer service and talk to Karen. She is awesome and will steer you in the right direction. I've had the wheels for a full season. And honestly can't say enough good things about them! Mercury Rocks!!

      Does anyone use the M5's in Cyclocross? How durable \ stiff are they?

      1. Are the included brake pads the newer generation (less noisy as some reviewers have mentioned)?

      2. Are there any maximum rider weight guidelines from Mercury?

      The new pads are included in all wheelsets and there is no rider weight limit. If you have any additional questions or to place an order, feel free to contact me directly :

      My Schedule is as follows:

      Mon-Thurs: 7am-530pm MST

      I can be reached at, on Chat as Sean Z, or by phone at 801-736-6396 x 4739

      Will these support 28 mm wide tires?

      Are this hub built in ceramic, because doesn't metion anything in the full description...

      Hi Dalmiro! Typically, unless stated otherwise, hub bearings are steel. These are Novatec hubs with steel bearings. I have been using these hubs for years without a single issue. Give me a shout and I can get an order going for you. 801-204-4557

      What is date of manufacturer or production?

      The description doesn't say if these are compatible with shimano or campy. Only one option but not sure which these are. Please clarify. Thanks

      What is the internal width on these rims? I haven't been able to find this anywhere online..

      Are these wheels tubeless ready?

      Best Answer

      From the Mercury website FAQ section: They are *tubeless compatible,* meaning you just need to add tubeless tape, a valve, sealant, and a tubeless tire. So technically no, since they come with the stuff mentioned above.

      Hi Deh Men! No, they are not tubeless ready, as indicates in the article. But technically, yes, they are tubeless compatible. Some wheels are not. The rim shape and bead hook don't work well with tubeless set ups on other wheels. But the Mercury's are built to be compatible with after market tubeless set ups.

      Let me know if you have any other questions or would like to set up an order. 801-736-6396 ext 4647

      For what it is worth, I set them up tubless with schwalbe one and pro one tires and 25 mm stans tape. I pumped up using a regular floor pump without needing soap or sealant inside. so super easy. The biggest challenge you will find is getting a tall enough valve stem. I couldn't find one, so I got a 60mm NOX valve stems and then added permanent valve extenders, the ones that screw in instead of the valve core. That seem to work great. Good luck

      Any idea how long these will be on sale?