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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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I've got a set of M3s on my 2011 Cervelo R3 Team with 700 x 25 clincher tires (love em) but a 28 would not work because the forks are narrow. Will the M5s fit on my bike with 700 x 25 tires?

From what I understand, many of the less recent Cervelos would not fit a 25mm tires, especially with the wider profile rim. Unfortunately you may be stuck running 23mm tires with that combination that you have. If you are looking for a smoother ride you may want to look at some tires that have a softer casing, like a Vittoria tire with a 320 TPI casing, that will allow the tire to compress more easily.

Let me know if you have any other questions.

Best Wheelset Ever!

  • Familiarity: I've used it several times

I love my Mercury wheels. They ride great in the flats, climb well, have excellent cornering and do great in the wind. They are fantastic all around wheel set.

Great wheelset - Fantastic Value

  • Familiarity: I've put it through the wringer

I have about 4200 miles on these with no issues whatsoever. As soon as I put these wheels on my bike I saw an increase in my average speed. The wheels are deep, but handle crosswinds and descents well. These wheels exceeded my expectations and I would definitely buy Mercury wheels again.

hi Roger
Thank you for the review
I have small question
Can the brand stickers can be peeled off?

The branding is not easily removed. It's more than just a sticker - feels like paint.

my new M5's came with white vinyl decals that I peeled off. My wheels came with extra gray decals that I put on.

Although i not personally sponsored, our team has a different sponsor for wheels. Trying to respect that by buying a set that can be unbranded...

Avg. ride time: 5h 28m per week
  • Average ride time is based on Strava activity over the last 3 months. Give your reviews credibility by connecting your account.

Super happy I pulled the trigger!

    I had some initial concerns about the wheels because they arrived out of true, but Competitive Cyclist customer service was fantastic as usual. After a quick truing at my LBS, they have been rock solid even through some pretty nasty pot holes. I went really easy on descents at first because it took a few weeks to really trust the brake pads/tracks - you can smell the pads burn on longer descents but after a few months of regular riding, I honestly think these break as well or even better than my previous aluminum-track rims. Haven't ridden in rain, but in heavy fog they stop perfectly as well. Quick wheels at an unbeatable price. Decals are also removable so I peeled mine off for the stealth look.

    Super happy I pulled the trigger!

    hi Matt
    Thank you for the review
    I have a small question
    DO the brand decals can be peeled off?

    Yes I was able to peel the decals right off - they are attached on top of the matte finish on the wheels so it was very easy to remove with my hands. Did not need any additional tools.

    Avg. ride time: 2h 23m per week
    • Average ride time is based on Strava activity over the last 3 months. Give your reviews credibility by connecting your account.

    Great investment.

    • Familiarity: I've used it several times

    Great improvement for my bike rides. Easily accelerate and maintain speeds. Breaking squeaks when the break pad is dirty but can easily be clean with a can of air. Overall a solid performer and nicely built.

    I'm not a fast rider but with this wheel I've seen my average speed increased as much as 2 MPH and shaving off my PR by 30s to 1min. Very happy with the performance increase specially with the price I paid.

    Fast wheels!

    • Familiarity: I've put it through the wringer

    I own a couple of sets of carbons wheels from other brands and wanted something new for my Pinarello. So I pulled the trigger on these Mercury M5's and couldn't be happier. Very stiff wheels with no issues at all. Well worth the investment. Huge fan of Mercury hand built wheels.

    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 38m 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..

          Avg. ride time: 6h 44m per week
          • Average ride time is based on Strava activity over the last 3 months. Give your reviews credibility by connecting your account.

          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 28m 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.

          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!

          I think they said 2017. With the Basalt Brake Track they should be NEW 2017's. Mine better be or they go back. Ordered last night.

          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?