Unfortunately, no. The GC-style sticks are particularly bad, since their degrees of analog sensitivity aren't quite right (going up in steps of 2 instead of steps of 1) and having a notable deadzone. At least, early GC-style sticks. Apparently later ones are better about this. Marginally. Good luck knowing which one you have.
There's also one modeled after OEM parts, but it's apparently incredibly stiff and bad and awful and people hate it... although it's apparently less so if you swap in the spring part from an actual OEM stick? I dunno.
There's also replacement gears from kitsch-bent. I ordered four pairs and am considering using it on my current stick (which still snaps back roughly to center but definitely is a little loose once it reaches there), so I guess I can see how well those work.
Unfortunately, the two gears are like only two parts of four that wear down from friction - you also have the bowl and the stick itself to worry about, and as far as I know nobody's done anything to replace those... yet. Writing this up, I'm wondering if the aftermarket OEM-style sticks could work as a replacement bowl, but given nobody's tried that yet, I'm going to assume the answer is "yeah no". Still, there are at least two suggested ways of repairing the bowl - one using metal putty and a 15mm steel ball, another using epoxy and drilling some holes into the existing bowl. I'm tempted to try the putty method sometime, although I'd have to special order the ball (they're cheap on Amazon, at least).