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2024–2026 Mustang S650 Heritage SC™ V-Shaped Dry Gloss Carbon Fiber Rear Diffuser Rectangular-Exit Quad Tips

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$2,589.98
  • Fitment verified for YOUR exact year/model/trim
  • Not sure? Email support@k2-industries.com for a real specialist to help you order
  • Got install questions? Text a tech who's actually installed this part before, even after it arrives
In Stock - Usually ships in 3-5 days
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Auto Addict USA  |  SKU: AA_S650_HERT_SPEC_DIFF_SC_24

Wrong fit or arrives damaged? Free replacement available

30,000+ Happy Customers30,000+ Happy Customers
30-Day Returns30-Day Returns
1 Year Warranty1 Year Warranty
What to know before you install
Bolt-on styling install Install Type Bolt-on styling
Install time Install Time About 30–90 min
Test-fit first Before Install Test-fit first
No paint needed Finish Usually no paint
Carbon fiber Material Carbon fiber
What to expect
This is a bolt-on, clip-on, or adhesive styling part. Test-fit before final install, clean the mounting area, and follow the included hardware or tape placement. Paint is not usually needed unless the product is sold unfinished.
Material note
Carbon fiber comes finished and does not need paint. Test-fit carefully because carbon is lightweight but can be brittle if forced.
Questions? We're here to help — support@k2-industries.com.
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Details

 

IN STOCK! SHIPS OUT 5-8 BUSINESS DAYS, AFTER PURCHASE DATE. ELIGIBLE FOR STORE CREDIT, IF REQUESTED TO BE CANCELLED.

 

Complete the rear-end identity of your S650 Mustang with the 2024–2026 Mustang S650 Heritage SC™ V-Shaped Dry Gloss Carbon Fiber Rear Diffuser Rectangular-Exit Quad Tips, manufactured by Auto Addict USA. Designed to match the same premium Heritage SC™ design language as the front bumper, hood, and side rockers, this rear diffuser gives the S650 a wider, lower, and more aggressive track-inspired appearance from the back.

This rear diffuser is built for Mustang owners who want their build to look complete from every angle. The Heritage SC™ V-shaped dry gloss carbon fiber design flows with the rear body lines of the S650 platform and helps create a more premium, performance-focused rear profile. Instead of a basic rear add-on, this diffuser is designed to become a major visual centerpiece of the full Heritage SC™ track package.

Each rear diffuser is manufactured by Auto Addict USA using dry carbon fiber and produced from a precision CNC mold to support track-inspired quality, consistent fitment, and premium body-line integration. The CNC mold process allows the diffuser to hold cleaner shape accuracy, sharper fin detail, and a more refined fit against the rear bumper area compared to standard hand-shaped aftermarket components.

The dry gloss carbon fiber finish gives the rear of the Mustang a high-end motorsport appearance that pairs perfectly with the Heritage SC™ front bumper, hood, side rockers, spoiler, and other carbon fiber aero upgrades. The diffuser helps visually lower the rear of the car while adding a more aggressive and exotic-style appearance.

This diffuser is designed around a rectangular-exit quad tip layout, giving the rear end a bold and modern performance look. However, customers are not required to use rectangular exhaust tips with this diffuser. Depending on the exhaust setup and preference, customers may also run quad circle tips for a more traditional performance appearance while still enjoying the aggressive Heritage SC™ diffuser design.

For the owner, this upgrade adds more than styling — it adds presence, balance, and value to the overall build. A rear diffuser is one of the most important pieces for completing the look of a full aero package. When paired with the Heritage SC™ front bumper, hood, and side rockers, this diffuser helps create a complete carbon fiber track package appearance that makes the S650 look more premium, more aggressive, and more exclusive.

Whether you are building a show car, street build, content car, or complete Heritage SC™ track package, this rear diffuser brings the rear-end design together with premium carbon fiber construction and a bold performance look.

Why This Rear Diffuser Is Worth The Investment

This is not a basic rear bumper add-on. The value comes from the dry carbon fiber construction, the precision CNC mold production process, the aggressive Heritage SC™ V-shaped design language, and the flexible exhaust tip layout.

Instead of adding a generic diffuser that may not match the rest of the vehicle, this Heritage SC™ rear diffuser is designed to visually connect with the full carbon fiber package. It helps complete the car from front to rear, adding a more finished, high-end appearance that increases the overall visual value of the build.

Key Features

  • Fits 2024–2026 Ford Mustang S650
  • Manufactured by Auto Addict USA
  • Heritage SC™ V-shaped rear diffuser design
  • Designed for rectangular-exit quad tips
  • Customers may also use quad circle tips depending on exhaust setup
  • Manufactured from dry carbon fiber
  • Produced using a precision CNC mold
  • CNC mold process supports track-inspired quality and fitment
  • Premium dry gloss carbon fiber finish
  • Designed to match the Heritage SC™ bumper, hood, and side rocker package
  • Helps visually lower and widen the rear profile of the S650 Mustang
  • Adds aggressive motorsport-inspired rear styling
  • Enhances the full track package appearance
  • Helps create a more complete and premium carbon fiber build
  • Ideal for show builds, street builds, content cars, and track-inspired Mustang projects
  • Designed for customers who want high-quality carbon fiber styling with clean body-line integration

Exhaust Tip Note

This diffuser is styled around a rectangular-exit quad tip appearance, but rectangular tips are not required. Customers can also use quad circle exhaust tips depending on their exhaust setup, preferred rear-end look, and installation configuration.

Vehicle Fitment

Make: Ford
Model: Mustang S650
Years: 2024, 2025, 2026
Trims: Designed for the S650 Mustang platform. Please confirm final trim compatibility before ordering if your vehicle has aftermarket rear bumper or exhaust modifications.

Installation Notes

Professional installation is highly recommended. This is a premium aftermarket carbon fiber rear diffuser and may require test fitting, alignment, adjustment, and proper body shop installation for best results. Please test fit all components before final installation. Minor adjustment may be required depending on vehicle condition, trim package, exhaust setup, and previous modifications.

 

Shop the 2024–2026 Mustang S650 Heritage SC™ V-Shaped Dry Gloss Carbon Fiber Rear Diffuser Rectangular-Exit Quad Tips manufactured by Auto Addict USA. Premium dry carbon fiber CNC mold rear diffuser with gloss finish, track-inspired fitment, Heritage SC™ styling, and compatibility with rectangular or quad circle exhaust tip setups.

Our Guarantee

Warranty Assurance:

At K2 Industries, your satisfaction is our priority, and we stand behind the quality of our products. Here's a brief overview of our warranty:

Defect Coverage:
If you find a defect after receiving your order, get in touch with us. We're committed to resolving the issue, whether it involves a replacement, repair, or refund.

Installation Note:
Please inspect your purchase before installation. Unfortunately, damages post-installation are not covered, so ensure everything looks good beforehand.

Claims Made Simple:
Need to make a claim? Reach out to us at support@k2-industries.com. We're here to assist you. Just keep your original packaging and documentation handy.

Your Satisfaction Matters:
Your trust in K2 Industries is appreciated. We're dedicated to ensuring your satisfaction with our quality automotive parts.

Shipping & Returns

Shipping Information:

At K2 Industries, we strive to provide a seamless and efficient shopping experience for automotive enthusiasts like you. Our commitment is to deliver high-quality parts to your doorstep with the utmost care.

Fast and Reliable Shipping:
Many of our products are stocked in our local warehouse, ensuring swift processing and delivery. Orders placed for these items typically ship within 2-5 business days, allowing you to get your parts in no time.

Extended Selection, Global Reach:
To offer you a broader range of automotive parts, some items are sourced from trusted suppliers around the world. While these products might have a slightly longer processing time, we assure you that the wait is worth it for the exceptional quality and value they bring.

Shipping Transparency:
For products shipped internationally, we provide estimated delivery times on the product page. Rest assured, we are continually working to optimize our supply chain and minimize any potential delays.

Combined Shipments:
To streamline your shopping experience, if your order includes items from both our local warehouse and international suppliers, they may be shipped separately. You will receive separate tracking information for each shipment.

Questions or Concerns?
If you have any questions about shipping or would like assistance tracking your order, our dedicated customer support team is here to help. Feel free to reach out to us at support@k2-industries.com.

You can also track your order here

Thank you for choosing K2 Industries for your automotive needs. We appreciate your trust in us.

FAQs

Will this lip or diffuser fit my exact vehicle?

It's designed for the fitment listed on this page. If your model has multiple bumper options (M Sport, GT, RS), confirm which one you have before ordering — these are specific to the bumper style.

Does this ship painted or unpainted?

Most ship unpainted (raw composite, primer, or raw carbon). Some carbon fiber lips ship pre-finished with clear coat. The spec sheet on this page tells you what to expect.

Can I install this myself?

Yes — most lips and diffusers are bolt-on or 3M tape-on, 30-90 minutes with basic tools. Some require drilling, which is permanent, so check the spec sheet for the mounting method before you start.

How does shipping work?

Most lips and splitters ship standard parcel (UPS/FedEx). Larger one-piece splitters may ship freight. Either way, shipping covers insured delivery and damage replacement.

The K2 Difference

  • • Built by enthusiasts who've made every fitment mistake you're afraid of. Now we verify parts for 30,000+ builds a year with zero wrong-part claims.
  • • Real specialists answer your questions in minutes, not chatbots reading scripts. We've built the same cars you're building.
  • • Freight damage, wrong parts, installation question, we handle it so you don't deal with suppliers or shipping companies.
Founder photo

Built By Someone Who's Been There

Max, the Owner, started in his garage making E36 M3 tail lights in his own oven.

  • • Started modifying cars before he could legally drive them
  • • Spent years hunting down parts that actually fit and don't suck
  • • Made the same fitment mistakes you're afraid of

You’re not buying from a warehouse. You’re buying from someone who builds cars just like you do.

Founder photo

What You Get With Every Order

Products Selected to Meet Quality & Fitment Standards we Stand Behind.
Products Selected to Meet Quality & Fitment Standards we Stand Behind.
Get Help From People Who Actually Understand Builds & Fitment.
Get Help From People Who Actually Understand Builds & Fitment.
Designed to Resist UV Exposure, Wear, and Everyday Use.
Designed to Resist UV Exposure, Wear, and Everyday Use.
Join Thousands of Builders Who Trust K2
Join Thousands of Builders Who Trust K2

What Sets K2 Industries Apart?

We don’t just sell parts. We actually care.
Pre-Order Fitment Verification
Damage Replacement
Real Experts Answer the Phone
Post-Purchase Installation Support
Curated Quality
30-Day Returns
K2 Industries
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K2 Industries
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Pre-Order Fitment Verification
Damage Replacement
Real Experts Answer the Phone
Post-Purchase Installation Support
Curated Quality
30-Day Returns
Add to Cart
GuaranteePerfect fit guaranteed

Frequently Asked Questions

How do I know this will actually fit my car?

Every part listing shows compatible years, models, and trims. But here's the thing—trim packages and factory options can be confusing. If you're not 100% certain, text us at 772-277-2495 with your VIN or photos of your car. We'll verify fitment before you order so you're not stuck with an $800 part that doesn't fit. We've done this for 30,000+ builds. We've seen every weird trim combo and factory option. Takes us 2 minutes to verify, saves you weeks of headaches.

What if the part arrives damaged or is the wrong item?

We handle it. You don't fight with freight companies or file claims. Text us photos within 48 hours of delivery. If it's damaged or wrong, we ship a replacement immediately. You're not waiting 6 weeks for a freight claim to process. We eat the cost, not you. This is why we package everything like it's going to war. But if something slips through, we fix it ASAP. No forms, no back-and-forth, no "file a claim and wait." Just text us and we handle it.

Can I install this myself or do I need a shop?

Depends on the part. Emblems, front lips, some spoilers, bolt-on, DIY-friendly, you can do it in your driveway with basic tools. Full bumpers, hoods, wide-body kits, possible for experienced DIYers but most people take them to a shop for paint and install. Check the product description for installation difficulty. If you're unsure, text us. We'll be honest about whether you can handle it or if you should take it to a pro. We'd rather you know upfront than get frustrated halfway through.

What's your return policy if it doesn't fit or I don't like it?

30 days, unused parts in original packaging. You pay return shipping unless we sent the wrong part or it arrived defective. Once you install it, modify it, paint it, or mount it, we can't take it back. That's why we push so hard on verifying fitment BEFORE you order. We don't want you stuck with something you can't use. Text us before ordering if you're unsure. We'll confirm fitment so you never have to worry about returns.

Do you offer financing?

Yes. Affirm and Shop Pay available at checkout for orders over $50. Split payments over 3-12 months depending on order size. No hard credit check to see your options. Most people use this for big-ticket items like body kits, suspension setups, or wheel/tire packages. Rates vary based on credit. You see the monthly payment before you commit. Makes it easier to build now instead of waiting months to save up.

What if I have questions after I receive the part?

Text 772-277-2495. We don't disappear after you buy. Fitment questions, installation issues, "does this bolt go here" questions... we'll walk you through it. We've installed these parts ourselves or helped hundreds of people install them. You're not getting transferred to a call center in the Philippines. You're texting someone who's actually installed your part before. If we can't help remotely, we'll recommend a local shop that knows these parts.

Why should I buy from K2 instead of eBay/Amazon/other sites?

eBay and Amazon sellers don't answer fitment questions. They don't verify your VIN before shipping. They don't handle freight damage claims for you. If something goes wrong, you're filing disputes and waiting weeks. We're builders selling to builders. We verify fitment before you order. We handle damage claims same-day. We answer texts in minutes. We're not the cheapest, but you're not gambling $800 on whether a part fits. You're paying for support, verification, and someone who cares if your build goes sideways.

What does your warranty cover?

1 year against manufacturing defects: cracking, warping, paint peeling, hardware failure, fitment issues caused by the part being made wrong. Does NOT cover installation damage (you cracked it bolting it on), road damage (curb rash, rock chips), or normal wear. If it breaks because we made it wrong, we replace it free. If it breaks because you hit a parking block, that's on you. We're fair about it. Send photos and we'll tell you honestly if it's covered.

Shipping

Do you ship overseas?

Yes, we ship all over the world. Shipping costs will apply, and will be added at checkout. We run discounts and promotions all year, so stay tuned for exclusive deals.

How much does shipping cost and when will I see the total?

Depending on where you're located, small parts can ship free. Large parts like bumpers, hoods, and body kits require freight shipping. Uou'll see the exact cost at checkout before you pay. Freight usually runs $150-$300 depending on size and your location. We know it's expensive. We negotiate the best rates we can. If you're ordering multiple large parts, text us. We can sometimes combine shipping and save you money. We're not hiding fees in the final step. What you see at checkout is what you pay.

How long will it take to receive my order?

It depends on where you are. Orders processed here will take 5-7 business days to arrive. Overseas deliveries can take anywhere from 7-16 days. Delivery details will be provided in your confirmation email.

See Why Customers Love K2 Industries

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Took 2 weeks to deliver with standard shipping. But well worth the wait. Install took 25 minutes with minimal tools and the lights look amazing. Fitment is perfect and the quality is excellent. Its kinda pricey but you get what you pay for with ntxglow products. Highly recommend!

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Wing came in perfect condition! No chip paint, no scratches. Amazing service!

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They look amazing, and after using ChatGPT to help me understand how to install them (because the instructions were not very helpful whatsoever), I’m glad with how they turned out. My problems are that the lights aren’t too bright, the instructions weren’t helpful, and the arrival date was wrong, even if they arrived early.

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Customer photo review of 1993-1997 Honda Del Sol Redclear Tail Light Lenses

This isn’t on K2, but the lenses came In which I was thrilled about. I’d already removed my OEM lenses from their housings. The passenger side lense fit well and mostly flush. The driver side, however, looks like it was slightly warped and caused poor fitment and what looks like a small dip in the red portion of the lense. I had no choice but to use them, as my OEM lenses were no longer usable. It can be very difficult to get replacement lenses in a timely manner for a Del Sol. I drive my car everyday, so I had to just go with it. Again, not a K2 issue but presumably the manufacturer.

Thom T. 2/5 Verified

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This rear bumper fits great the only thing is the trunk button on the bottom is cut a little to wide but that’s an easy fix it looks great and definitely makes the rear look more aggressive. I love it!

Donovan T. 5/5 Verified

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The box was a little crushed, but the line was packed well and it wasn't a problem. The instructions are 3 pages of color pictures and lots of explanations. Very nice. The line itself is a very nice bit of kit with a swivel AN line end that allows a No-tension install. No leaks so far and it looks great. It came with new banjo bolts and copper crush washers. The only criticism I have is that I would have liked this hose coated in black so it disappears like the original, but it does look good, so I don't mind.

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