Dave,
As shown (with just one half of the speedbrake) it weighs 1lb 6oz. Probably around 1lb 10oz with both.
I plan to change the 2 rods from steel to AL to save a bit. Maybe an ounce or 2.
If I get some of the parts machined from AL, it will get heavier, as AL is twice the density of the PETG I used to 3D print the parts.
Paul