Bicycle derailleur

A bicycle derailleur comprising:

• a chain guide configured to interact with a transmission chain of a bicycle and movable between a plurality of intermediate positions comprised between an inner position and an outer position;
• a fixed body configured for being fixedly associated with a part of a frame of a bicycle;
• an outer connection element rotatably connected to the fixed body about a first articulation axis (A) and rotatably connected to the chain guide about a second articulation axis (B) parallel to the first articulation axis (A);
• an inner connection element rotatably connected to the fixed body about a third articulation axis (C) and to the chain guide about a fourth articulation axis (D);
• an actuation arm hinged to the fixed body about the first articulation axis (A);
• and,
• a cable-clamping washer with a cable-bending appendage having predetermined dimensions that are mate with in a seat formed in the actuation arm;
• said seat extending along a first direction (F) and being provided with a first insertion opening and a second insertion opening, opposite one another and selectively engageable by said cable-bending appendage of the cable-clamping washer.