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Handmade in Northern Utah since 2008
The perfect blend of climbing power and aero:The S4s, designed after our world's fastest wheel, the A5, bring a slightly shallower depth for a smooth ride that maximizes performance.
We offer a 100% satisfaction guarantee: the S4 is hands down the fastest wheel in it's price category. Our mission is to create a professional-quality wheel at half the price.
Who it's for:
Pro peloton tested: used by podium finishers at:
- US Pro Road Race - National Champion
- German Cyclocross - National Champion
- Athens Twilight Crit (x2)
- Tour of Utah
- Multiple US Amateur Championships
- Wednesday Night Worlds
- Weekend Warriors
Mercury Wheels are engineered in the US and hand assembled at our facility in Ogden UT.
Your wheels come with a two year warranty. For more info see:
Aero / STT
The big challenge for wheel engineers is to reduce weight while maintaining aerodynamics. Typically these design elements are not available in a sub $1k wheel. Luckily, we already made the fastest wheel in the world and translated some of these into the S4.
Spokes + Hub
A professional wheel builder will build your wheel by hand. The S4s come with Sapim's indefatigable Race spokes and Mercury's custom hubs. We've found this combination, particularly our low friction sealed-bearing hub, brings an engagement that's as close to immediate as anything we've seen on the market.
The front hub has an extra-wide 70 millimeter flange for reduced flex under hard efforts and confident stability at speed. Both hubs have an oversized axle that reduces to accommodate a traditional quick release and two and four oversized bearings in the front and back, respectively.
The S4's 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 also involves the incorporation of basalt fibers in the brake track to reduce heat build-up and increase stopping power.
This increased stopping power goes a long way toward addressing the poor braking that is one of the most common critiques of carbon wheels.
Rims / Size: Mercury S4C / 700c
Clincher / Tubeless Compatible
External Width: 27mm / Internal Width: 17mm
Hubs: Mercury sealed bearing
Rim brake - QR x 100/130mm / Disc brake - 12 x 100 / 12x142mm
Spokes: Sapim Race
Weight in grams: Rim - 1625g / Disc - 1650g per set (+/- 2%)
What's included: Snap-style rim strips, valve extenders, cassette spacer, brake pads and quick release skewers (rim brake version only)
Warranty Info: Your wheels come with a two year warranty. For more info see:
Faster Than a Speeding Bullet. Born and crafted in an aerodynamics lab, the A5 comes in at 55mm deep, but offers a virtual depth of 67mm by utilizing Kamm Tail Technology.
You can visualize the Kamm Tail effect by imagining a tear drop shaped aerofoil with a small portion of the tail end removed. Up to a certain point, the flow will still act as though the tear drop shape is complete without going turbulent. What that means in the real world is you can have the aero benefits of a 67mm deep wheel, while still maintaining a lower profile to maintain stability in cross wind. That means that the A5 is a great option for a do-all wheelset.
They are as happy in the weekend crit as they are in a time trial or road race.
We improved braking performance by using resins that are some of the highest temperature rated in the industry. The A5 is built with Sapim CX-Ray bladed spokes, laced into our Tempest straight pull hub using a 2:1 pattern that increases lateral stiffness without additional material.
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Hand built in the USA
|Material: CARBON||Depth: 38mm|
|Weight (Set): 1,610g||Width: 24mm|
At first blush, you might be inclined to compare Mercury's M3 Carbon Clincher Wheelset to other manufacturers' pure climbing wheels. And you'd be right to do so, at least when it comes to climbing. But these aren't just a one-trick pony. The M3s' aerodynamic pedigree, low weight, and brute strength also recommend them for all the ups, downs, and flat-outs of competitive cycling. They cover the demands of every terrain on every day of your cycling life.
The rims measure 38 millimeters, a depth that strikes an all-purpose middle ground between straight-on aerodynamics, hiding from crosswinds, and considerations of weight for climbing. The M3 is a solid 24mm 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 19 millimeter rims: they actually decrease rolling resistance and increase aerodynamics.View full product details
The M5's are the perfect blend of a performance and price. They are the next generation of carbon road wheels in the ever-popular M-series.
The M5's 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 also involves the incorporation of high-temperature resins in the brake track to reduce heat build-up and increase stopping power. This increased stopping power 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 our most popular wheel by far.
Spokes + Hub
The M5s are finished off with Sapim's indefatigable CX-Ray spokes and Mercury's own hubs. The rear hub includes multiple 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 70 millimeter flange for reduced flex under hard efforts and confident stability at speed. Both hubs have an oversized axle that reduces to accommodate a traditional quick release and two and four oversized bearings in the front and back, respectively.