Attachment Parts On Underside Of Rear Spoiler Lower Section:

Attach muckets (1) on left/right.

Stick on buffers (2) on left/right.

Stick on stop buffer (3) in middle.

1. Mucket 45 mm long
2. Buffer 5.8 mm high
3. Stop buffer 2.2 mm high
   Fig 1: Attaching Muckets On Left/Right

   Courtesy of BMW OF NORTH AMERICA, INC.