Replaces part number : W315464 / D437. Derailleur Hanger is compatible with the following bikes Trek 1-Series, 2014-2017. Trek 2/5/6/7-series Madone, 2013-2014. Trek 7.7 FX, 2015-2015. Trek 7.7, 7.9 FX, 2016-2016.
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