Figured for $80 it was to good to be true

So do the 6" shackles that both those companies make provide any lift?
Yeah, you don't lift it with shackles. Instead do the 4" flip and a zero rate for the rear. That will net you 5". From there, to level it, you can add longer shackles, but only what you need as longer isn't always better
So do the 6" shackles that both those companies make provide any lift?