Mixed Wheel Sizes Aren’t Just for the Pros Anymore


It’s been less than a year since we brought you news of a new Specialized Demo. July 2019 was when the 29-inch DH race bike and its fascinating linkage first owned up to its spy photos. But famously, many of those spy photos were taken of Loic Bruni, who was riding the Demo with a 27.5-inch wheel in the rear and a 29-inch up front. We’ve seen several riders and a few brands join the mixed-wheel club, but as we concluded when we discussed the trend, you’re not getting the whole benefit unless the frame itself is right for it. So, not quite an entire rebuild, the new Specialized Demo takes a purpose-built approach to mixing wheel sizes, but with a twist.

Photo: Courtesy of Specilaized Bikes/BIKE Magazine

The new Demo will work with either 27.5- or 29-inch wheels, and has a flip chip in the…

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