Short answer: No!
Long answer: There’s at least 2 ‘universal’ rear mech / derailleur hangers, but they are not suitable for every bike
- There is emergency mech hanger which can be used on most bikes with a quick release (QR) hub and axle. This hanger might be useful if you often ride with others and want to have a spare if others in your group have a broken hanger. It’s meant as a temporary hanger just to get you home, and it’s unlikely you’ll be able to use the full range of gears on your cassette – however it’s better than walking home!
- A few years ago SRAM introduced their ‘Universal Derailleur Hanger’. It’s designed to rotate rearward in the event of impact and features the ability to “re-rail” the chain back onto the small cog. It works with MTB and E-MTB derailleurs from different manufacturers. However … you must have a bike with a frame specifically designed for this hanger – just like any other bike! You can buy one from us here: https://fixmymechhanger.co.uk/product/sram-universal-derailleur-hanger/