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$389.95 $419.95
• One of the top aero mods for Mustangs • Mounting holes and slots for perfectly centered easy install and adjustability • CNC machine cut in the USA from solid aluminum NOT aluminum foam sandwich material • Highest quality...
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• One of the top aero mods for Mustangs

• Mounting holes and slots for perfectly centered easy install and adjustability

• CNC machine cut in the USA from solid aluminum NOT aluminum foam sandwich material

• Highest quality diffuser you can buy

• Check out American Muscle's review and installation video below

A part of the EMP premium line of Mustang products made in the USA from 1/8" aluminum and powder coated matte black, this rear diffuser will definitely make you stand out from the rest with aggressive styling and quality above the other diffusers out there. Diffuser blades on stock diffuser are centered with the EMP diffuser blades for a clean professional look unlike the uncentered lopsided blades of our competitors diffusers. Easiest install of all the diffusers on the market with mounting holes (yes the competition has NO mounting holes so you just guess where to put the screws in), slotted attachment to two existing bolts to ensure center section is perfectly centered and adjustable to get the desired gap from rear of car. Comes with black stainless steel screws, nuts, bolts, brackets and stainless steel lock washers. Strong and remained steady during 155 MPH test - Lapped the Daytona 500 Race Track with one installed. Easy installation - installation video at bottom of page.

Check out the lower cost HDPE Diffuser HERE.

2018+ EcoBoost version available now!

Specifically designed for 2015-23 Mustangs with stock rear bumper shown in pictures below. Will not fit Shelby models or Mach 1.

(Glossy black shown in pictures. White edges can be painted by buyer if desired.)

Fits stock bumpers shown below.

2015-17 GT, V6 and EcoBoost

2018-23 EcoBoost

2018-23 GT and EcoBoost High Performance Pack


• Premium Rear Diffuser is Made in the USA from 1/8” Aluminum

• Powder Coated Matte Black for High Durability and Enduring Good Looks

• Adjustable So You Can Set at the Desired Distance from Rear of Car

• Exotic Muscle Addition That Will Make Your Mustang Stand Out

• Simple Screw-In Installation. Step-By-Step Instructions Provided.

• Custom Made for the 2015-2023 S550 Mustang with stock rear bumper (will not fit Shelby models or Mach 1)


Exotic Muscle Styling. Premium adjustable rear diffuser custom designed to match the contours of your Mustang and stand out from the others. Adds an aggressive low look that will turn heads wherever you go.

EMP Precision Quality. Made in the USA from 1/8” aluminum then powder coated matte black for a strong durable finish. Precision machined for a great fitting high quality product.

Simple Screw-In Installation. Unlike other rear diffusers, this diffuser has mounting holes so it can be screwed securely to your stock diffuser underside using existing screws plus additional provided stainless steel screws and lock washers. No random holes, missed connections leaving ugly extra holes or crooked uncentered mounting like the other diffusers. Slotted mount to adjust distance from side of car. Assembly required before installation.

Application. Custom designed for 2015-2023 S550 Mustangs with stock rear bumper (will not fit Shelby models or Mach 1).


Installation Info

Installation Time

(approx) 1 Hour

Difficulty Level:



Printed installation guide (PDF can be downloaded by clicking here)

What’s in the Box

  • (1) Rear Diffuser Center Section
  • (2) Rear Diffuser Driver and Passenger Side Blades
  • Stainless Steel Assembly and Mounting Hardware
  • Assembly and Installation Guide


Customer Reviews

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