158 Derailleur Hanger / Trek

Derailleur Hanger Number 158.

High quality CNC machined hanger by Wheels Manufacturing.

You can find your hanger number by using the Wheels Manufacturing Finder Tool.

- CNC machined 6061 aluminum
- Black anodized finish
- Attaches to frame with (2) M4x4 Socket Head Screws
- Replaces:

- Trek part #W303978
- Trek part #W295979