Mustang (15-16) S550 GT4 Full Louver Kit

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Mustang (15-16) S550 GT4 Full Louver Kit SKU:S550GT4HL

Availability: In stock

  • This kit includes GT4 Style Center vent and direct replacement GT side vents.
  • Also Includes backing plates for secure mounting. The Center vent REQUIRES hood cutting and drilling.
  • Side Vents require minor trimming of underside of hood, but not the top side. Side vents are direct replacement drop in vents. Side vents do not require drilling.
  • 18.5" Height
  • 20.25" Front Width
  • 22.5" Rear Width
    Side Vents
  • 18.6" Height
  • 4.75" Front Width
  • 5.75" Rear Width
  • $379.99


    • Optimized louver design to maximize extraction flow velocities within a vehicle in motion
    • Reduces under hood pressure delta to reduce front end lift and increase net vehicle downforce.
    • Significantly reduces under hood temperatures by extracting heat and allowing fresh cold air to enter the engine bay.
    • Maximize life of engine accessories by reducing overall operating temperature.
    • Increases dense, cold air flow through radiator to promote lower coolant temperatures.
    • Louver backbone design maintains hood structural rigidity.
    • Contoured to fit your specific hood curve.
    • Installs easily with supplied templates.
    • Included in kit: Templates for cutting, rivets, washers, installation instructions, and necessary spacers for a factory quality installation.

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    Fitment and Looks

    Customer Reviews

    • Fitment and Looks
      The best on the market
      Review by S550Trackon 7/1/2018
      I track my GT pretty hard and needed to vent the hood to reduce temps and get rid of the cowl shake. My choices were: Anderson Composite hood- Garbage for 1500$. GT350 GT4 hood- $12k for the hood. Trackspec GT4 vent kit- High Quality, race engineered, proven on track and show cars. I couldn't be happier. Didn't have to paint my hood and did the install on saturday and was racing on sunday. Kit quality is excellent. Couldn't be more satisfied.
    • Fitment and Looks
      GT4 louvre kit
      Review by Jeffv8 on 4/10/2018
      Looks great was a easy install for me. Great product