I would contact Schumacher and see if they can help with sourcing a spur. They may have a better idea of what else may fit. And when you find one, order 10 of them 😉
Oh wait. Is it called a "whisper gear? If so, Schumaker has them in stock, along with a bunch of other parts for it. This whole...
Like Kung Fu Panda, I am pure awesomeness. You dare not look at me for fear the awesomeness will cause you to fall over dead 😜
But actually, i just found this cool app last night. It's called Google Lens. It looks at photos and finds matches. Entering the photo of the chassis brought up the...
Dude! You have yourself a Schumacher Fireblade Evo or some version of it
https://www.rcscrapyard.net/schumacher-fireblade-evo-2.htm?hcb=1
Rear shock tower (I think)
EDIT:
After more digging, you seem to have a Fireblade 2000, so that shock tower may not be it. I found this video...
The...