Originally Posted by
alcjphil
This would indicate to me that your derailleur hanger may need to be aligned. If that is the case a new derailleur no matter what quality will not solve your shifting problem
Tourneys have a flat steel upper mount that is quite soft. They are fairly easy to bend by hand and will often bend before the hanger does. If the bike doesn’t have a claw hanger, the hanger on the Tourney is similar in strength to the claw.