Just adding in, I have the ONIRII CD-02 lightweight rotors in center lock 160m.
They were 101 grams without the lockring.
I really don't have much confidence in these rotors, they sound really odd under heavy breaking due to the massive holes in the pad contact surface. They do break fine, and pad wear doesn't seem to be affected, but it just doesn't sound right.
I don't live anywhere hilly, but not gonna risk it. Have been riding them for about 500km
I'm probably going to swap them for a shimano or galfer, something with more contact area.
Photo for proff:
https://imgur.com/a/VssZTDA