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How to Install a MMD Roof Spoiler on your 1994-2004 Mustang

Installation Time

15 minutes

Tools Required
  • Alcohol Prep Pad (included)
American Muscle
Shop Parts in this Guide


(1) - Roof Spoiler
(1) - Alcohol Prep Pad
(1) - Adhesion Promoter

Before beginning, be sure to thoroughly
clean the rear window to remove dirt and
any other debris that may prevent the tape
to bond properly.

Step 1

Wipe down the outer upper edge of the
rear window with the supplied alcohol
prep pads where the spoiler will adhere.
Once dry, follow with the supplied 3M
Adhesion Promoter.

Step 2a

Peel the backing from the 3M tape and
place the spoiler over the rear window (do not let the tape adhere yet). Tuck the outer edges of the spoiler into the quarter window trim as shown.

Step 2b

Pull the center of the spoiler up so it is
even with the window weather stripping.
Once the spoiler is properly located, press down firmly around the edges to fully seat the adhesive tape.