They install with factory holes and screws and do not require drilling. Tips from my experience: You need a torx bit for the factory screws. There is little space on the rear wheels. The paint protection film is made of 3M Clear Bra material. There are tips and tricks to make fitting a sheer bra easy and successful, so watch some YouTube videos if you'd like. As others have pointed out, the cut parts of a sheer bra don't cut well, so use caution when separating. Aligning the bolts means applying a little force and then running, but don't tighten the bolts until you've started on each one before tightening them one at a time. If you often work with cars, this is called "perfect alignment". If you've never done this before, you'll think it's a pain in the ass. For the rear valves, I put my finger between the top of the valve. and fender by tightening the bottom two screws to prevent adhesive from sticking before the flap is properly aligned. Then I installed the clamps as additional insurance. It took over an hour but I became obsessed with wearing a sheer bra.
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