Our line of mountain/trekking derailleurs starts with M21, that doesn't mean it's entry level. Using the same kinematics as our more expensive derailleurs and innovative construction technics, M21 delivers responsive performance in an attainable package.
All Wheels Manufacturing replacement derailleur hangers are produced in our Colorado shop to exacting tolerances.
CNC machined 6061 aluminum
Black anodized finish
Attaches to frame with (2) M3x8 flat head screws
Fasteners included
Cervelo part # DHR-
