SKU: 36903949990

XForce | 1 7/8" Tuned-Length Headers & 3" Cat Kit | Ford Mustang GT S550 2018–2023 | H2-FM18-KITB

Sale price$807.98 Regular price$897.75
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Ships within 48 hours · Estimated delivery Jul 20 - Jul 25

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Description

XForce | 1 7/8" Tuned-Length Headers & 3" Cat Kit | Ford Mustang GT S550 2018–2023 | H2-FM18-KITBXForce 1 7 8" Tuned Length Performance Header Kit Ford Mustang GT S550 (Facelift) H2 FM18 KITB Unleash the full potential of your Ford Mustang GT S550 Facelift with the XForce Performance Header Kit. Engineered with precision for the 5. 0L Coyote V8, this 4 1 tuned length design features large 1 7 8" primary pipes that merge into a 3" outlet, drastically optimizing exhaust scavenging and flow. The kit is equipped with dual 3" 200 cell high flow

XForce 1 7/8" Tuned-Length Performance Header Kit - Ford Mustang GT S550 (Facelift) - H2-FM18-KITB

Unleash the full potential of your Ford Mustang GT S550 Facelift with the XForce Performance Header Kit. Engineered with precision for the 5.0L Coyote V8, this 4-1 tuned-length design features large 1 7/8" primary pipes that merge into a 3" outlet, drastically optimizing exhaust scavenging and flow. The kit is equipped with dual 3" 200-cell high-flow metallic catalytic converters, ensuring unrestricted airflow and significant performance gains in both horsepower and torque. Crafted from durable non-polished stainless steel, this system is built to withstand high-performance driving while delivering the aggressive, raw V8 soundtrack your Mustang deserves. Whether you are hitting the track or the street, XForce delivers the perfect blend of power, efficiency, and style.

What's in the Box?

  • 2x 1 7/8" Tuned-Length Stainless Steel Headers (Left & Right)
  • 2x 3" 200-Cell High-Flow Metallic Catalytic Converters
  • 3" Pipework after Collector Flanges
  • Installation Gaskets & Hardware

Features:

This product offers the following high-performance features:

  • 1 7/8" Tuned-Length Primaries: Meticulously engineered to maximize exhaust gas velocity and engine breathing for the Gen 3 Coyote V8.
  • Dual 3" 200-Cell High-Flow Cats: High-performance metallic cores provide far less restriction than factory units for maximum power delivery.
  • 4-1 Collector Design: Optimized for high-RPM flow and peak horsepower gains.
  • Stainless Steel Construction: Durable, high-grade stainless steel with a functional non-polished finish for long-term reliability.
  • Versatile Fitment: Precision-engineered to bolt up to both XForce cat-back systems and the OEM factory cat-back exhaust.

Specifications:

  • Make: Ford
  • Model: Mustang GT
  • Series: S550 (Facelift Models)
  • Engine: 5.0L Coyote V8 (Gen 3)
  • Part Number: H2-FM18-KITB
  • Material: Stainless Steel (Non-Polished)
  • Header Style: 4-1 Tuned-Length
  • Primary Size: 1 7/8"
  • Cat Size: Dual 3" (200-Cell Metallic)

Important Information

  • The image shown may not reflect the actual product; the system features a non-polished finish.
  • Shipping times may vary depending on destination and stock availability
  • Tuning: A professional ECU tune is required after installation to optimize engine performance and prevent check engine lights.

Vehicle Applications:

Make Model From To Body Series Engine Variant Drivetrain
FORD
FORD MUSTANG 2018 2023 Fastback / Convertible S550 (Facelift) 5.0L V8 GT / Mach 1 RWD

 

Warranty Information
Product Type Warranty Period
304 & 201 Stainless Steel Exhaust Systems 60 Months
Accessories 12 Months
Catalytic Converters 12 Months
Electronic Products (Including SmartBox) 12 Months
Mild Steel & 409 Stainless Steel Exhaust Systems 24 Months
Mild Steel Headers 12 Months
Stainless Steel Headers 24 Months
Universal 304 Stainless Steel Mufflers 24 Months
Universal Mild Steel & 409 Stainless Steel Mufflers 12 Months

Payment & Security:
Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 36903949990

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Nafisa
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★★★★★ 5
The Ordinary Glycolic Acid 7% Review – Effective Glow & Smooth Skin Treatment
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I really like The Ordinary Glycolic Acid 7% toner. It helps exfoliate the skin and makes it look smoother, brighter, and more even over time. After regular use, my skin feels softer and looks more refreshed. It is also very affordable compared to many other skincare products, and a little goes a long way. The bottle lasts a long time, which makes it good value. However, it can be a bit strong for sensitive skin, so it’s important to start slowly and not overuse it. Also, sunscreen is important because it can make your skin more sensitive to the sun. Overall, it is a very effective exfoliating toner and a great addition to a skincare routine if used correctly.
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Reviewed in the United States on May 1, 2026
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Krishayna Miller
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★★★★★ 5
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Size: 8.11 Fl Oz (Pack of 1)
The Ordinary Glycolic Acid has become one of my favorite skincare products. It makes my skin feel smoother, brighter, and much softer after consistent use. I’ve noticed improvement in dullness, rough texture, and even areas like my neck and scalp. A little goes a long way, and the bottle lasts forever for the price. I also love that it’s multi-use and can be used on more than just the face. You do have to be careful not to overuse it because it’s strong, but when used properly it gives amazing results. Such a great affordable skincare staple!
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Reviewed in the United States on May 14, 2026
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hawaii trip '27
Boise, US
★★★★★ 5
this is such a good product! i love it!!
Size: 8.11 Fl Oz (Pack of 1)
i love this toner so much!! it has helped with my skin tremendously. if you are on the fence about it, just get it! its good for sensitive skin as well. i used to have those unexplainable bumps on my forehead for over a year but now they're gone and they were gone within one week of using it, it is such a good product!! i use it once every day at night but i have also heard people use it once or twice a week. this toner is also really good for dark armpits, BO or face, back and chest acne. its fragrance-free and the bottle size is pretty big and will last awhile. Highly recommend, 10 out of 10!
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Reviewed in the United States on April 21, 2026
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Cesar.H
West Palm Beach, US
★★★★★ 4
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Size: 8.11 Fl Oz (Pack of 1)
I've been using it for my acne on my side arm, I've been applying it everyday after I shower and I've noticed a big difference. It's less red and little to no acne on my right side.
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Reviewed in the United States on May 18, 2026
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kerencia borgelin
Houston, US
★★★★★ 5
The ordinary Glycolic acid 7%
Size: 8.11 Fl Oz (Pack of 1), Size: 8.11 Fl Oz (Pack of 1)
The Ordinary glycolic acid is really good — it made my skin smoother, brighter, and helped with dark spots without costing too much,easy to use , Just make sure to use sunscreen during the day since glycolic acid can make skin more sensitive to the sun.
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Reviewed in the United States on May 12, 2026

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