Shimano Tourney rear derailleurs

[Pieter De Klerk]

Hello are these 2 rear derailleurs like universal? I have a 29' Giant Rincon 2022 which comes with a Tourney Ty300 6/7 speed looking to change it to a 8 speed. If not what groupset can I buy then to go for 8 speed thanks in advance. The first pic is what I currently have 

Edited July 6, 2025 by Pieter De Klerk

[RobynE 🚵‍♀️]

I stand corrected but I think the 7 speed is a freewheel so you need a freehub body that is compatible with your hub, and no, the stock derailleur won’t work with 8 speed.

If your hub won’t accept a freehub body then it’s a new hub (and wheel build). 

If you are very determined to go this route then you’d be better off doing 1x11 or 2x10. You can get those parts fairly cheaply. Going from 7 to 8 speed would be a hella waste of money for pretty much no gain.