North shore billet derailleur hanger trek 2012 12x142mmcnc machined derailleur hanger from north shore billet suitable for 2011 2012 fuel ex aluminium 2011 fuel ex carbon 2012 fuel ex 99 98 97 carbon 2011 2012 remedy aluminium and carbon 2012 lush aluminium and carbon 2012 slash 2012 session aluminium and carbon 2012 gary fisher rosco 29 2012 gary fisher superfly 100 aluminium and carbon 2011 2012 gary fisher rumblefish features cnc machined from 6061 t6 aluminium anodized finish model