Wheels Manufacturing derailleur hanger #158 is a direct, frame-specific replacement for Trek and Gary Fisher. Attaches to frame with (2) M4x4 Socket Head Screws.

Compatibility & fit

Stated fitment from SCV / Wheels Manufacturing:

  • Trek: part #W303978 Trek part #W295979 Notes: 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 Trek 5-series Madone - 2011 Cronus (Road) - 2010-2011
  • Gary Fisher: Cronus CX Pro - 2012 Cronus CX Ultimate - 2012 Cronus CX Ultimate Frameset - 2012 Ion CX - 2012 Ion CX Pro - 2012 Ion CX Pro Frameset - 2012 Fisher Cronus - 2010-2012 Fisher Ion - 2010-2012 Ion (Road) - 2010-2011 Madone 5 series - 2011 Madone 6 Series - 2010-2011 Speed Concept - 2010-2011 Speed Concept 2 Series - 2011 Speed Concept 7 Series - 2011 Speed Concept 9 Series - 2011

Derailleur hanger fitment is frame-specific: hangers that look alike are often not interchangeable. Match this hanger against the derailleur hanger currently on the frame (or the frame's exact model and year) before ordering. The Tune Cycles workshop can fit and align a new hanger — derailleur hanger alignment is a workshop service.

Wheels Manufacturing backs this hanger with its published 1-year limited warranty against manufacturer defects from the original date of purchase. It excludes normal wear and tear, damage from crashes, abuse, misuse or improper installation, and proof of purchase is required. For warranty support, return the product to Tune Cycles and we'll manage the claim with Wheels Manufacturing's Australian distributor.
  • Wheels Manufacturing hanger #158
  • Direct-fit replacement for Trek and Gary Fisher
  • Attaches to frame with (2) M4x4 Socket Head Screws
  • Frame-specific fit — match against your existing hanger before ordering
  • Tune Cycles workshop can fit and align a new derailleur hanger
BrandWheels Manufacturing
Hanger number#158
FitsTrek and Gary Fisher
Fitting notesAttaches to frame with (2) M4x4 Socket Head Screws
SKU SCV-WMDH-158
Brand Wheels MFG