Amazon.com: Rear Derailleur Hanger, Derailleur Hanger Replacement for Gary Fisher Trek : Sports & Outdoors
repair - Derailleur hanger built-in/cast with frame — options if misaligned? - Bicycles Stack Exchange
How do I remove this derailleur hanger bolt? Turning it right or left just spins it in a circle. It's a fairly new bike and I didn't apply any excessive force, it
How to replace a derailleur hanger | MTB.guide
Amazon.com : Bike Derailleur Hanger Extender, Easy Remove Bicycle Rear Derailleur Extension Frame Operation for Mountain Flywheel for Cycling Enthusiasts(Black) : Sports & Outdoors
Bike Maintenance: How to Replace a Derailleur Hanger - YouTube