Amazon.com : KIEVODE Derailleur Hanger for Giant Avail, Brava, Defy, Envie, LIV, Propel, Revolt, TCR, Thrive and More - Replacement Hanger Part for Rear Derailleur - for Mountain Bikes, Road Bicycles, and
GIANT RE-171 Rear Derailleur Hanger Dropout For Many GiANT Bike Defy TCR AVAIL | eBay