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How to Install Defenderworx Rear Spoiler - Fastback - Unpainted on your Mustang

Installation Time

1 hours

Tools Required
  • 3M general all purpose cleaner
  • Cleaning cloths
  • Cutting tool

Included In Package:

1- Mustang Roof Spoiler
1- Roll tape
1- 3M Adhesive Promoter sticks
1- Defenderworx Oval Emblems

Step 1:
Clean the rear glass where tape will stick with a good wax or grease remover. Use 3M general all purpose adhesive cleaner.


Step 2:
Apply the provided 3M adhesive promoter onto the part and press the tape on.


Step 3:
Install tape along spoiler side and front edge as shown. Repeat on other side of spoiler. Do not remove red backing from tape until fitment is confirmed.


Step 4:
Install the provided Defenderworx ovals AFTER spoiler has been painted. (Carbon Fiber spoiler has DW oval preinstalled)


Step 5:
Install rear spoiler by centering spoiler around rear brake lamp. Spoiler is slightly smaller than width of glass. Do not remove red backing from tape until fitment is confirmed.


Step 6:
When fitment is confirmed, remove red backing from tape. FIRMLY push on spoiler for proper adhesion. (we suggest using 3M blue or green low tack tape on spoiler and roof to secure it and leave in sun for 1 hour.


Step 7:
Check that spoiler is centered and is secured to vehicle before operating.


Install Tip:
Check out Defenderworx Louvers P/N 901413, Street Flares P/N 901410 and Aluminum Fuel Doors to give your ride a more aggressive look.


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