With the new 15×110 and 12×148 Trek was able to build 29″ wheels that are about as stiff as a 27.5″ and has wheels on the way that will increase stiffness by as much as 30% once they make the most out of the new flange geometry. If you want the most distilled version of the why for Boost hub spacings, the answer seems to be increasing the stiffness of 29″ wheels. The stratification of the fat tires is intend to ultimately provide the most fun bike possible… While the Stache is what Trek thinks of as the “trail hardtail perfected,” the Farley gets broken down into different groups depending on the intended terrain. Why so many? Well, as the fat bike continues to evolve, so does the manner in which they are ridden.
![2013 trek stache 7 chainstay length 2013 trek stache 7 chainstay length](http://images.singletracks.com/blog/wp-content/uploads/2015/04/2015-04-17-2-trek-stache-IMG_0141.jpg)
![2013 trek stache 7 chainstay length 2013 trek stache 7 chainstay length](https://farm5.static.flickr.com/4110/5054545394_70ae916fc3_z.jpg)
Originally limited to 26″ hoops, now riders have the choice between 26, 27.5, and 29″ wheels with varying rim widths. The way trek sees it, tire sizes from 2.8-3.25″ fall into the plus/mid-fat category while 3.25-5″ tires qualify as fat. What started as basically just a 3.7″ tire has morphed into an increasing number of sizes that now will include even a 27.5″ fat. It’s getting to the point that just calling a bike “fat” doesn’t really mean that much. What we weren’t expecting from Wisconsin was an entirely new range of plus/mid-fat/and fat bikes with (even) more new tire sizes.
![2013 trek stache 7 chainstay length 2013 trek stache 7 chainstay length](https://findabikelive.blob.core.windows.net/bikes/trek-fuel-ex-7-2021_3-large.jpg)
Learn more.Īfter all the buzz around wider boost hubs leading up to Sea Otter, we weren’t surprised to see a new bike from Trek to take advantage of the added tire clearance. Support us! BikeRumor may earn a small commission from affiliate links in this article.