Available in XS to XL frame sizes, the Firebird accommodates more riders and more riding styles than ever before. It introduces a new adjustable chainstay length with our patented Swinger® dropout system, letting you quickly switch between longer or shorter chainstay lengths. You can further tune your ride with the suspension flip chip: select the more progressive setting for a poppy and lively ride, or a more linear setup to keep the bike as planted as possible.