Product Description
Derailleur hanger, gear mech hanger, dropout replacement for Trek, Gary Fisher (aka part #303978) bike models:
- Trek Madone 6 Series 2010-2011
- Trek Speed Concept 2010-2011
- Trek Cronus 2011
- Trek Madone 5 series 2011
- Trek Ion 2011-2012
- Trek Cronus CX Pro, 2012
- Trek Cronus CX Ultimate 2012
- Trek Cronus CX Ultimate Frameset 2012
- Trek Ion CX 2012
- Trek Ion CX Pro 2012
- Trek Ion CX Pro Frameset 2012
UNION rear derailleur hanger manufactured by Marwi one of the most know manufacturers in the world:
- Material: Cast aluminium.
- Bolts included.
- Marwi catalog number: GH-112
- AKA mech hanger, gear hanger: #303978
For any questions please contact us or send an email to:
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To be sure if this the right part, please send us photos of:
1. Your derailleur hanger from both sides;
2. And if possible bike‘s frame part photos, where dropout was attached.