Derailleur Hanger 321 - Trek

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 not Included
• Replaces Trek Part #W524188
• Frame Compatibility