Derailleur Hanger 158
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) M4x4 Socket Head Screws
- Trek part #W303978
- Trek part #W295979
- Frame Compatibility
- This hanger has 4mm threaded fastener holes in it. DROPOUT-164 is the same hanger, but with 3mm threaded holes.
- Trek part #W295979 is thicker where the fastener holes are, but DROPOUT-158 will work.