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  • 30 Day Return Policy
  • E-mail & DM Support
Excellent37 Reviews on

2015-23 S550 Mustang EMP Rear Diffuser V1

$369.95 $289.95
You Save $80.00
10 Left In Stock

High-Performance Aero Mod for Your S550 Mustang

  • Custom design enhances Mustang's contours for an exotic & eye-catching look
  • USA-made, precision-machined diffuser ensures durability and perfect fit
  • Pre-drilled holes & included screws allow for secure, simple installation
  • Custom design enhances Mustang's contours for an exotic & eye-catching look
  • USA-made, precision-machined diffuser ensures durability and perfect fit
  • Pre-drilled holes & included screws allow for secure, simple installation
DESCRIPTION
 

Click to view all EMP 2015-23 Mustang Rear Diffuser Designs

This S550 Mustang rear diffuser is crafted from robust 1/4" high-density polyethylene material. It features aggressive styling that significantly stands out from other diffusers on the market.

Unlike the uneven blades on competitor products, ours are precisely centered with those on the stock diffuser, guaranteeing a clean, professional appearance.

Installation is a breeze thanks to its pre-drilled mounting holes — a feature absent from competing products, leaving you guessing where to position the screws.

Our design includes a slotted attachment to two pre-existing bolts, ensuring the center section is perfectly aligned. This also allows for adjustment to achieve your preferred gap distance from the car's rear. We provide stainless steel hardware to facilitate an effortless installation process that will look great for years to come.

Demonstrating its strength and stability, this S550 Mustang rear diffuser remained steady during a 155 MPH test run while lapping the Daytona 500 Race Track. Installation is simple – check out the American Muscle review and installation video at the bottom of this page.

FEATURES
 

• USA-made Premium s550 Mustang Rear Diffuser expertly crafted from robust 1/4" HDPE

• Adjustable for custom spacing from rear of car

• Exotic muscle addition to make your Mustang unique

• Simple screw-in installation with instructions provided

• Designed for 2015-2023 S550 Mustang with stock rear bumper (Not for Shelby or Mach 1)

SHIPPING INFORMATION
 

FREE SHIPPING on standard orders over $49 within the continental United States. We utilize USPS, UPS, and DHL for
shipping services. For shipping addresses within 48 contiguous United States, next-day shipping on most parts if you place your order by 5 PM CST. UPS does
not deliver to P.O. boxes, so we recommend a physical address. Non-returnable custom orders may take up to 10 days to ship.

Most parts ship the next business day unless they are out of stock or are custom orders. In the continental U.S., standard
ground delivery takes approximately 3-5 business days. We offer 3-day, 2-day, or 1-day shipping options for faster delivery, shipped the next business day if ordered by 5 PM CST. Custom orders can take up to 10 days or more to ship. For APO/FPO addresses, shipping can take up to 2 months via USPS.

“Thank you so much for your great customer service! Your products are of great quality and I get so many compliments!”

William Windsor

EMP – QUALITY AMERICAN MUSCLE CAR MODS

Quality isn't just our reputation; it's our promise.

Evans Motorsport Performance is the creation of father-son duo Travis and Cole Evans. Your vehicle deserves nothing short of excellence, and that's precisely what we provide. Every EMP component is built at our Houston, Texas, facility.

Our commitment? To provide you with top-tier, USA-made car modifications you can install with absolute pride and trust.

MAKE YOUR MUSTANG EVEN MIGHTIER

Boost your Mustang’s flow and style with a high-quality EMP S550 Mustang Rear Diffuser that couldn’t be easier to install

Exotic Muscle Styling

Premium adjustable S550 Mustang rear diffuser is custom-designed to match your Mustang's contours and make it stand out. Adds an aggressive, low-look aesthetic that will turn heads wherever you go.

EMP Precision Quality

Made in the USA from robust 1/4" high density polyethylene (HDPE). Precision-machined to ensure a high-quality, perfect fit.

Easy Screw-In Installation

Unlike others, this S550 Mustang diffuser has pre-drilled holes for secure attachment to your stock rear bumper using existing screw locations. Stainless steel hardware included.

WHY CHOOSE AN EMP S550 Mustang REAR DIFFUSER

Just like your Mustang, our mods stand out from the crowd. Here’s how:

Made in the USA from 1/4" HDPE

Exceptional Durability & Enduring Good Looks

Exotic Muscle Edition That Gets Attention

Easy and Simple Screw-In Installation

Easily Adjustable to Desired Distance

Custom Made for the 2015-2023 S550 Mustang

WHAT’S IN THE BOX

We aim to make installing your new parts as quick and easy as possible. As well as your mod parts, we give you all the info you need for an efficient installation. Here’s what you get:

  • Diffuser Center Section with 4 Blades
  • Driver and Passenger Side Blades
  • Stainless Steel Assembly and Mounting Hardware
  • Installation Guide Download. Click here to download pdf.

OUR CUSTOMERS LOVE THEIR EMP MODS

Excellent37 Reviews on

Emailed and explained what I needed and they knew right away what part I needed and sent it in.

Lorenzo M.
Verified buyer

Aggressive look. This rear diffuser will give such an aggressive and unique look to your Mustang. I love it.

Eva U.
Verified buyer

I’ve purchased 5 different rocker splitters. This is the best one, by far. Functional & made of metal. Quality product & durable.

JONATHAN K.
Verified buyer

All the parts I’ve ordered from EMP are 11/10 quality not to mention the customer service is impeccable. The diffuser is perfect fits the car great...12/10 experience

Kenneth N.
Verified buyer

HOW TO INSTALL YOUR EMP S550 Mustang REAR DIFFUSER

Click here to download pdf of Installation Guide. PLEASE READ FOR LATEST INSTRUCTION ADDITIONS THAT MAY NOT BE SHOWN IN VIDEO.

FREQUENTLY ASKED QUESTIONS

Will this diffuser fit my S550 Mustang?
 

Yes, if you have one of the stock bumpers shown at the links below. Not for Shelby or Mach 1 models.

2015-17 GT, V6 and EcoBoost ↓

Click to See 15-17

2018-23 EcoBoost ↓

Click to See 18-23 EcoBoost

2018-23 GT and EcoBoost High Performance Pack ↓

Click to See 18-23 GT and EcoBoost HP

What is Evans Motorsport Performance?
 

Evans Motorsport Performance, is founded, owned, and operated by father and son Travis and Cole Evans. We're dedicated to crafting car mods that outclass and outlast, all with a seamless installation. Quality isn't just our reputation; it's our promise. Your ride deserves excellence, and we deliver.

Where do you make your mods?
 

We build each EMP part at our Houston, Texas hub - no distant factories in faraway lands here. Our mission? Delivering peak-quality, American-made car mods you can install with pride and confidence. 

How do I get my mods?
 

Revamping your muscle car is easy with us. Select your vehicle, and pick the custom mods you want. We can source them from over 1,500 quality suppliers if you need help finding them. Finally, sit back and let us speed-ship your order, free for $49+ buys.

My part doesn’t fit. Can I get all my money back?
 

We’ll refund your money, less any merchant or restocking fees we incurred which we’re unfortunately unable to refund.

What's your shipping policy?
 

We offer FREE SHIPPING on standard orders over $49 within the continental United States. We utilize USPS, UPS, and DHL for shipping services. For shipping addresses within 48 contiguous United States, we offer Next-day shipping on most parts if you place your order by 5 PM CST. UPS does not deliver to P.O. boxes, so we recommend a physical address. Custom orders, which are non-returnable, may take up to 10 days to ship.

How long until I get my mods?
 

Most parts ship the next business day, unless they're out of stock or are custom orders. If you're in the continental U.S., standard ground delivery takes approximately 3-5 business days. We offer 3-day, 2-day, or 1-day shipping options for faster delivery, which are shipped out the next business day if ordered by 5 PM CST. Custom orders can take up to 10 days or more to ship. For APO/FPO addresses, shipping can take up to 2 months via USPS.

Excellent37 Reviews on

2015-23 S550 Mustang EMP Rear Diffuser V1

$369.95 $289.95
You Save $80.00
10 Left In Stock

High-Performance Aero Mod for Your S550 Mustang

  • Custom design enhances Mustang's contours for an exotic & eye-catching look
  • USA-made, precision-machined diffuser ensures durability and perfect fit
  • Pre-drilled holes & included screws allow for secure, simple installation

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Free Shipping
QUALITY CRAFTSMANSHIP
30 Day Return Policy
E-mail & DM Support
  • Free Shipping
  • QUALITY CRAFTSMANSHIP
  • 30 Day Return Policy
  • E-mail & DM Support