Am I right in assuming that when you go higher in lift without the bracket, you will lose brakes at the rear? Or will braking at the rear increase?

I currently have a 3" lift in mine. Was told by the reputable 4x4 shop when it was put in that it's not need for a lift of this height, and as such have no bracket. Braking isn't bad, but as with anything, if it can be improved, why not.