Forest Bykes sources all of the derailleur hangers from bicycle manufacturers factories. Our hangers are forged then machined. FIT GUIDE: WARRANTY / EXCHANGES GT Four - 2009 GTR - 2005-2006 GTR 1.0, 1.2, 1.3, 1.4 - 2006 GTR Alloy - 2007 GTR GTw Series Four - 2008 GTR GTw Series Three - 2008 GTR GTw Series Two - 2008 GTR Series - 2009 GTR Series 3, 4 - 2010 GTR Series 3, 4 - 2009-2010 GTR Series 3, 4, 5 - 2011 GTR Series Five - 2007 GTR Series Four - 2007-2008 GTR Series Three - 2007-2008 GTR Series Two - 2007 GTR Type CX - 2008-2012 Legato - 2007 Legato - 2009 Legato 2.0 - 2008 Legato 2.0,3.0,4.0 - 2008 Legato GTw 2.0, 3.0, 4.0 - 2008 Lotto - 2000 Road Bike - 2000-2001 Series 1, 2 - 2006 Three - 2009 Type CX - 2009-2010 Type CXI - 2010 ZR - 1999-2000 ZR 1.0,2.0,3.0,4.0,5.0 - 2001 ZR Road 1000-5000 ZRX - 2000 ZRX and Other ZRS - 2001 Jamis Aragon - 2000-2005 CC 1.0 - 2003 CC 2.0 - 2003 Citizen 2.0 - 2009 Citizen 2.0 Lady - 2009 Citizen 3.0/2.0 - 2011 Citizen 3.0/2.0 Femme - 2011 Citizen 3.0/2.0/1.0 - 2010 Citizen 3.0/2.0/1.0 Femme - 2010 Commuter 2.0 - 2009 Commuter 2.0 Lady - 2009 Crosscountry - 2000-2001 Crosscountry SC - 2002 Crosscountry SX - 2001-2002 Durango - 2000 Durango Sport SX - 2001 Explorer 2.0 - 2005 Explorer 2.0 - 2003-2004 Explorer 3.0 - 2003-2005 Explorer 4.0 - 2003-2005 Tangier - 2001-2005 Schwinn CX - 2007-2009 Fastback Series - 2002-2009 Le Tour - 2010-2011 Le Tour Series - 2007-2010 Super Sport Series - 2003-2009 Team In Training - 2009