i was kinda vague... Give you alittle more info:
I have a 2001 Tomos TSR50, it is the same scooter as a Hyosung Rush.
The rings are brass with black plastic coating on outside. (6 total)
They are about 1/2" X 1/2" with hole going through about 1/4".
The other is about 1" X 3/4" with a hole of 1/4"
Could the 6 rings be rollers for the variator?
As for the 1" X 3/4", maybe it is supose to go between the pipe & manifold?
I have the pipe on the scooter without any of the rings.
Runs fine, but not really any noticeable difference.
Thanks.