Fly Sierra 2 BarsSergio Layos' signature Fly Sierra 2 Bars were designed to be a smooth, good looking set of bars. The Fly Sierra 2 Bars come packed with as much tech as is possible in a bar, they include multi butted tubing, aggressive clamp area knurling, user friendly cut lines at the bar ends. as well as all of that the Sierra 2 Bars are built from post weld, heat treated 4130 chromoly that thanks to the multi butted tubing keeps the weight down without losing any