Wheels Manufacturing Dean Replacement Derailleur Hanger / Drop Out - 88Wheels Manufacturing Dean Replacement Derailleur Hanger Drop Out 88 All Wheels Manufacturing replacement derailleur hangers are produced at their Colorado shop to exacting tolerances. Genuine Wheels Manufacturing replacement derailleur hanger MPN: DROPOUT 88 Fits: Most Dean Bikes (excluding Ace or Baja) 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