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 #W311263
• Trek Part #W311356
• Frame Compatibility

Notes:

• This hanger has 3mm threaded fastener holes in it. DROPOUT-158 is the same hanger, but with 4mm threaded holes.
• Trek part #W311356 is thicker where the fastener holes are, but DROPOUT-164 will work.