S3 Clincher

Short and wide are not exactly the most flattering attributes, unless you’re a lightweight rim. We have designed our rims with a wider rim profile with ample internal rim width. This creates a sense of traction like a Formula 1 car hugging the corners at 150mph.

The 30mm depth provides stability in any crosswind condition, but also provides a laterally stiff wheel due to the rim profile and spoke lacing pattern. The lacing pattern allows us build our wheel using a slightly lower spoke tension without sacrificing a gram of performance.

The S3 is a solid 24 millimeters 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.

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The S3s are laced with Sapim's Race spokes, their most popular double-butted model, which are capable of withstanding a claimed one million load reversals of fatigue testing while still saving weight courtesy of their butting. They connect to proprietary Mercury hubs, which engage with 3 pawls for a nearly immediate responsiveness that takes advantage of the rims' low rotational inertia. The front hub has an extra-wide 72 millimeter flange for reduced flex under hard efforts and confident stability at speed. Both hubs have a 15 millimeter axle that tapers to accommodate a traditional quick release and two and four over-sized bearings in the front and back, respectively.

The Mercury S3 Clincher Wheelset comes with a Shimano/SRAM 11-speed compatible freehub body and includes skewers, valve extenders, brake pads, and rim strips. Mercury recommends a rider weight limit of 250 pounds.


Mercury's Dual Carbon Layer Process (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

Reducing heat buildup

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.

Mercury's Seamless Transition Technology (STT)

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.

Included in the box

The Mercury S3 Clincher Wheelset comes with a Shimano/SRAM or Campagnolo 11-speed compatible freehub body and includes skewers, brake pads, and rim strips.


2 yr warranty extends from the date of purchase, applies only to the original owner, and is not transferable.  More info..


  • Carbon Fiber Material
  • 24mm Rim Width
  • 30mmRim Depth
  • Mercury Race Front Hub
  • Mercury Race Rear Hub
  • Sapim RaceSpokes
  • Black BrassNipples
  • 20Front Spoke Count
  • 24Rear Spoke Count
  • Quick ReleaseSkewers
  • RimBrake Compatibility
  • 694 gFront Weight
  • 869 gRear Weight
  • 1,563 gComplete Set Weight
  • CyclingRecommended Use
  • 2 yearWarranty

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