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It can be done without removing the bumper completely. I did it last weekend to powdercoat them. It was a PITA, but I only had to take out the lower bumper cover push-clips and pull it away enough to get to the two 8mm (i think) bolts that hold the tip on per side. 2 hours of trial and error to get to the bolts, and get them off. Sandblasted, Powercoated and reinstalled them without any issue. Install took 20 minutes...