Rivet Removal Note

WARNING: This page is about a different car, the 2017 Mazda 3. However, it is still accessible from the selected car via links, so may be relevant.

When removing the rivet, perform the following procedure:
1. Secure the rivet pin from the rear bumper side using needle-nose pliers.
  
  Fig 1: Locating Rear Bumper Rivet
  Courtesy of MAZDA MOTORS CORP.
2. Use the following drill diameter.
  Drill diameter:
  
  4.1 mm {0.161 in} or less
  CAUTION:
  - Always use a drill bit of the specified diameter when removing the rivet. If an inappropriate diameter drill bit is used, the rear bumper face and the bumper guard may be damaged.
3. Remove the rivet flange using a drill and remove the rivet.
  
  Fig 2: Removing Rivet Flange Using Drill Of Rear Bumper
  Courtesy of MAZDA MOTORS CORP.
4. Remove any rivet shavings from the rear bumper face and the bumper guard.