S4 Rim Brake

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handmade-in-utah   Handmade in Northern Utah since 2008
  73k+ fans

The perfect blend of climbing power and aero: The S4s, designed after our world's fastest wheel, bring a slightly shallower depth for a smooth ride maximizing performance. You will feel faster on ascents, more comfortable on descents and more stabilized in cross wind situations.

- Depth: 45mm 

- Width: 21/28mm

- Weight: 1270g


Speed Guarantee:

We offer a 100% satisfaction guarantee: the S4 is hands down the fastest wheel in it's class. Our mission is to create a professional-quality wheel for everyone.

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:



In stock - Usually dispatched within 24 hours