When designing the turbo levo fsr expert 6fattie specialized started by building a trail bike with all the hallmarks that specilaized mountain bikes are known for while streamlining the design for full integration of our turbo technology this means that you get a roomy top tube for an easy fit ultra short chainstays for nimble handling and a low bottom bracket that makes the bike feel glued to the trail then comes the efficient and powerful turbo technology mating the battery and motor in