Which Top of the Car Bike Mounts will fit a Fat Bike? Dave Updated May 23, 2017 14:16 Follow We have a few mounts that will fit Fat Bikes with tires between 3.25 and 5" they are; HighRoad - Fits up to a 3.25" HighSpeed - Fits up to 5", also fit most Thru Axles out of the box ForKChop - Fits up to 5", also fits most Thru Axles out of the box Related articles Will a FatBike Fit the FrontLoader? Does Yakima offer any Fat Bike Mounts What is a fork adapter and why do I need one? What types of cross bars can the Yakima Sidewinder attach to? Carbon Fiber Bike Comments 0 comments Article is closed for comments.