The BMC #44 Derailleur Hanger is a rear derailleur hanger designed specifically for select BMC mountain and cross-country bikes. It fits the 2014 Fourstroke 01-03 29, Trailfox 01-03 29, and 2015-2017 Speedfox 01-03 models. Using the classic mount system, This hanger is an essential replacement part for the rear derailleur mount on the MY15 SLR 02. The package includes one rear derailleur hanger and corresponds to position #7 on the explosion chart for these models.