Wheels Manufacturing Giant Replacement Derailleur Hanger / Drop Out - 325Wheels Manufacturing Giant Replacement Derailleur Hanger Drop Out 325 All Wheels Manufacturing replacement derailleur hangers are produced at their Colorado shop to exacting tolerances. Genuine Wheels Manufacturing replacement derailleur hanger MPN: DROPOUT 325 Replaces Giant Hanger #RE270A May fit other brands and models, however, we advise you to assess the product image prior to purchasing to ensure that the item is the correct fit for your bike.