Rear Diffuser Pin-stripe Pre-cut Overlay for 2025+ K4 GT-Line Sedan Only

A simple diffuser pin-stripe pre-cut overlay for your 2025+ K4 GT-line is a change that makes all the difference on your rear diffuser. Choose from multiple colors that make your rear stand out. Easy to install, just line it up and stick. Subtle yet aggressive change to make your K4 pop. Pre-cut overlay designed specifically for 2025+ K4 GT-Line Sedan. Transforms your rear diffuser with minimal effort and maximum impact.

Specifications:

• Fitment: For 2025, 2026+ Kia K4 GT-Line  SEDAN ONLY
• High-Quality Material: Can withstand all kinds of weather (5 - 7 Year Durability)
  
• Easy Application (Peel and Stick)
  
• Comes in 4 Diffuser stripe pieces
• Featured Photo is RED
• ** NOTE ** Not a replacement part.
  This product is a vinyl overlay that sticks to the existing rear bumper fangs to accentuate the rear. Offering a multitude of colors for a finish that shouts your personality and style.

How to Install

For Best Results
Tools Needed: Heat gun or blow dryer, padded glove or felt-tip squeegee 

Step-by-Step Installation:

1. Rinse the entire rear diffuser fang application area with water/soap, or a 70% isopropyl alcohol spray.

2. Dry the surface completely to ensure there is no dust or residue on the surface or in the crevices.
   

3. Peel off the vinyl overlay from the backing paper one by one; they are cut to shape to fit your diffuser. Make sure you peel the correct one before applying it to the diffuser fangs. 
   
   
4. If starting with side accents - Align the edge that is closest to the outside of the bumper, and lay the top portion first before rounding the rest downward. The top portion will be your guide on how the overlay sits on the fang.
   
   
5. If starting with the accents closer to the middle of the diffuser (reverse light), lay the top portion of the overlay first before it rounds downward (that will be your guide on how high the overlay sits).
   
   
6. Make sure the pin-stripe is centered on the diffuser accent.
   
   
7. Once aligned, the rest should fall into place. If it does not, peel it up carefully and re-apply ensuring you slowly guide the overlay down to your desired placement after laying the top portion first.
   
   
8. Make sure you have a padded card or soft glove to put on your fingers; if you do not, your fingers will do fine to smooth out the overlay onto the diffuser.
   
   
9. Swipe left and right gradually to reduce bubbles
   
10. Once everything is laid out to your desired outcome, follow the steps below to ensure longevity and adhesion.
    
    
11. Post-heat the vinyl: Use a heat gun or blow dryer to remove small bubbles and activate the adhesive for stronger bonding.
    
    
12. If bubbles remain, press firmly with your finger or squeegee and swipe them out toward the closest edge.
    
    
13. If you make a mistake, gently peel off the overlay right away and reapply. Add light heat to remove wrinkles.

📌 Reminder: Always post-heat the vinyl after installation. This activates the glue and ensures maximum adhesion. 

📩 Need Help?
Questions? Contact our support team at:
📧 sales@aeroflowdynamicsoverlays.com