Nice! I actually bought the Kansai ones but returned them (have forged bars as well). Couldn’t be bothered with machining new mounts, and couldn’t figure out how to fit them right. Would be interested in knowing you you positioned it.
But then again, my solution was $20 vs the few hundred dollar carbon pieces so I’m happy overall.
As for price, you got me. But effectiveness, I don't know.
For the Kansai on the Forged bar, the inner mount needs a longer metal strap. Thats all
For the outer mount, you get a flexible strap that you bolt on and wrap around the end mount of the Forged bar. It moves a little bit, but it's REAL stable in actual use. I wish I had a picture of the back side. But, you don't really fabricate much. Just a simple aluminum strap with holes from like Lowe's or home depot. Just bending metal.