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Item # MCW0001

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  • Black, Shimano/SRAM, New Brake Track ($949.95)
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Item # MCW0001

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

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

Reviews & Community


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What a wheelset!

  • Familiarity: I've put it through the wringer

I have over 1700 miles on them with zero issues. Super high build quality! Highly recommend!

Mercury M5 Wheels

    I've owned these wheels for a year now and and extremely pleased that I bought them. They have proven to be extremely durable and handle extremely well in windy conditions. They are better than the HED's I owned previously. I've been out on days with winds better than 25 mph and have not been swayed from one side of the road to the other. The braking is very good and the brake pads seem to be holding up very well. I am very pleased with my purchase and would recommend them to anyone who is looking to upgrade their wheel set. For the price that I payed for them they are worth every penny.

    Avg. ride time: 3h 14m per week
    • Average ride time is based on Strava activity over the last 3 months. Give your reviews credibility by connecting your account.

    Amazing wheel set

    • Familiarity: I've put it through the wringer

    I had several wheel sets, the last were Mavic cosmic. The Mercury M5 are, in my opinion, way better. Holding the speed for longer and just feels better overall. for that price... what a deal!

    How do I use the dark/gray decals? Do I peel off the white ones or do I place the gray on top of the white decals?


    You need to remove the white decals before placing on the decals .

    you can do either way, I have done both. on the older wheels they were laminated so I went over. Now you should be able to peel those off.

    Can these wheels set up tubeless? Accept a 10 speed cassette? Can you remove the stickers?

    Great company and great customer service

      I bought the mercury M5 carbon wheels. They are amazing and the customer service was great,they helped me a lot, especially John Jakupcak. They are great company and I definitely recommend them.

      Great company and great customer service

      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).

        Are these compatible with a 10 speed shimano cassette?

        Yes. I have run both Shimano and SRAM cassettes with this wheelset.

        Avg. ride time: 4h 13m per week
        • Average ride time is based on Strava activity over the last 3 months. Give your reviews credibility by connecting your account.

        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.

        Unanswered Question

        Hey CC. I'm about to pull the trigger on a set of these, but I was wondering what the year/build date is on these? Thanks!

        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.

        How is braking in the wet? And how is braking compared to those with carbon brake tracks?

        Avg. ride time: 2h 55m per week
        • Average ride time is based on Strava activity over the last 3 months. Give your reviews credibility by connecting your account.

        Love these!

        • Familiarity: I've used it several times

        These are amazing!

        Love these!

        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!!

        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.

        Avg. ride time: 5h 59m per week
        • Average ride time is based on Strava activity over the last 3 months. Give your reviews credibility by connecting your account.

        Will these work with 10sp shimano? Does it come with spacer?

        Yes, the wheels are 10 speed compatible (that's how mine are set up). And yes, the spacer is included.


          The initial test for a good wheel is how easy it is to pinch the tire on and off. I had a real bad experience with a Reynolds wheel and I never want to experience that again. I can't get the tire off the wheel, wtf!! I can change my Zipps in under 2 minutes!

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

          Hi Timothy! I'm 200 lbs and had never had issues on the road. I don't know of anyone who uses these for cross but I wouldn't hesitate. Give me a shout if you have any other questions or would like to place an order. 801-204-4557