Fits some Gary Fisher and Trek Fits some Gary Fisher and Trek Post on this hanger is 16.5mm (.650`) in length with an M12 x 1.25 thread - Please check your hanger before ordering to make sure this is a match Compatibility: Gary Fisher: HiFi - 2010-2011 / Superfly - 2010-2011 / Superfly 100 - 2012 / Superfly 100 AL - 2012 / Superfly 100 AL Elite - 2012 / Superfly 100 AL Pro - 2012 / Superfly 100 Elite - 2012 / Superfly 100 Pro - 2012 Trek: HiFi - 2010-2011 / Remedy 9.9,9.8,9.7 - 2010 / Remedy Carbon / Aluminum - 2010 / Rumblefish - 2010 / Rumblefish (Base Model) - 2011-2012 / Rumblefish 29 - 2013 / Superfly 100 - 2010-2011 / Top Fuel 9.8 - 2009-2012 / Top Fuel 9.9 SSL - 2012 / Top Fuel Carbon and Aluminum - 2009-2012 / Top Fuel