Derailleur hanger, gear mech hanger, dropout replacement for BTwin, Decathlon, Rockrider bike models:
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-063
- AKA mech hanger, gear hanger:
For any questions please contact us or send an email to:
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.