This replacement derailleur hanger 381 is CNC machined from 6061 aluminum in our Colorado shop to exacting tolerances. It features a black anodized finish, attaches with two M4x10 flat head screws (not included), and replaces CEEPO part #Rd No. 3. For use with 130mm wide hubs only — for 135mm wide hubs use Derailleur Hanger 390.
