Welcome to our Fall Website Refresh. Beta testing in progress. Phone Number: 805-267-9762 This month's discount code: HALLOWEEK3 

Welcome to our Fall Website Refresh. Beta testing in progress. Phone Number: 805-267-9762 This month's discount code: HALLOWEEK3 

ZL1 Addons 2015-2023 Dodge Challenger Deluxe Rear Diffuser

(4 customer reviews)

Introducing our new winged diffuser for the 2015-2023 Challenger, suitable for all models. It features an aluminum belly pan that smooths and diffuses air coming out […]

$406.99

Available

$

ZL1 Addons 2015-2023 Dodge Challenger Deluxe Rear Diffuser

Introducing our new winged diffuser for the 2015-2023 Challenger, suitable for all models. It features an aluminum belly pan that smooths and diffuses air coming out from under the car and an additional wing for added downforce, all attached to high-density polyethylene (HDPE) material with an automotive finish.

Unlike other brands, our product is functional and will diffuse the air correctly from the differential to the rear of the vehicle. It is designed to bolt up to the factory valance as an add-on and comes with all mounting hardware. You’ll notice additional downforce at 75+mph, providing a more planted feel for the vehicle. Compared to our standard Challenger diffuser, this product has a fin-to-fin height that is 1.75″ taller.

Please note that this product will ship hardware that will work with a threaded or unthreaded rear differential cross brace. If your rear end is unthreaded, you will need a Rivnut Tool to install the hardware nuts that the bolts will screw into.

Please be warned that this product will touch the ground on steep slopes and driveways on a stock-height Challenger. If you have lowering springs or airbags, the product hangs low and will scrape when taking on sharp-angled instances.

Product Fitment:

  • 2015-2023 Dodge Challenger All Models

Product Finish: 

  • Standard Aluminum – This product will have an HDPE main diffuser and fins with a raw aluminum* attachment plate.
  • Black Powder Coat Aluminum – This product will have an HDPE main diffuser and fins with a black powder-coated aluminum attachment plate.

Shipping: This product is built to order and will take 7-10 business days to build and prep for shipment. Black powder-coated panels have a 14-21 business day build lead time.

*Note: The aluminum that attaches the diffuser to the car is NOT a finely finished piece. It will have fine marks and scratches obtained during manufacturing. This part of the diffuser is not viewable when the car is sitting on the ground.

We’ve got your back!

At Function Factory Performance, we prioritize customer service that goes above and beyond. We recognize that searching for the appropriate parts can be a daunting task, and we’re dedicated to guiding our customers through the process with ease. By staying ahead of the curve through education and awareness, we ensure our customers receive the most innovative solutions. You can give us a call at (480) 576-8606, send a direct message through our live chat, or click here to contact us via email. Our team is always eager to assist and make your experience with us simple, stress-free, and enjoyable.

Make sure to follow us on Instagram: @FFPerformanceAZ and Youtube.

EMAIL A FACTORY SPECIALIST FOR HELP CALL A FACTORY SPECIALIST NOW

4 reviews for ZL1 Addons 2015-2023 Dodge Challenger Deluxe Rear Diffuser

  1. C

    Chad

    No Reviews Yet!!! What?!?
    Anyway, I have had mine for quite a while and I feel like it completes the rear of my car.
    Haven’t really tested if it diffuses or not, but aesthetics are good enough for me.
    See my pic…

    Image #1 from Chad
    (3) (0)
  2. JB

    Joseph Bruno

    Can’t wait to send it out for powder coating!

    (1) (0)
  3. JD

    Jeremy Dileo (verified owner)

    (0) (0)
  4. EV

    Edgar Vargas

    Hello I love the defuser I prefer form you guys a while back but I did the mistake of backing up to close to a parking bump and well te two insert got damaged including the threads of the pins in looking to order just the inserts and pins that hold the rear I’ll send pictures so you can see what I’m talking about. Thank you

    Image #1 from Edgar Vargas
    Image #2 from Edgar Vargas
    (0) (0)
Add a review

Your email address will not be published. Required fields are marked *

Frequently Asked Questions

How long does it take for my parts to ship?
If it’s in stock and ready to roll, your order usually hits the road within 1–3 business days.

For made-to-order or specialty items (like carbon fiber parts or custom builds), the turnaround can take up to 8 weeks — perfection takes time.

Either way, we’ll keep you updated so you know exactly when your parts are leaving the pit lane.
Do you send tracking with my order?
Absolutely. Once your order ships, you’ll receive an email with a tracking link so you can follow its journey from our shop to your doorstep.

If your order ships via freight, you’ll get a separate email with a direct link to the carrier’s tracking page — easy and stress-free.
What happens if my parts get lost or damaged?
Things happen on the road — even to boxes. If your order arrives damaged, snap a few clear photos of the box and product and send them our way right away.

If your shipment is lost, just email or call us — we’ll help track it down and guide you through the next steps to make it right.
What can I do to help FFP?
Simple — spread the horsepower!

Follow us on Instagram, YouTube, and Facebook, and most importantly, drop us a review on Google or Yelp to let others know about your experience.

Your feedback helps us grow, create more content, and keep bringing performance-driven parts to the community.

1

Customer Support Specialist

Have a question about parts or your order? We're open Monday to Friday, 9:00 AM to 5:00 PM PST.

Your Product Is Guaranteed

Our #1 responsibility is to deliver your parts as quickly as possible.

Race Proven Knowledge.

The crew at FFP is built from real racers and car enthusiast.

Payments Verified

We verify every transaction to prevent fraud. Know that your information is safe.