SKU: 18287384539

XForce | 1-7/8" Headers & 3" Hi-Flow Cats | Ford Mustang GT S550 FM GEN 6 2014–2017 | H2-FM15KIT

Sale price$672.30 Regular price$747.00
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Ships within 48 hours · Estimated delivery Jul 27 - Aug 1

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For Your Every Summer RSVP, with Code: SUMMER15

Description

XForce | 1-7/8" Headers & 3" Hi-Flow Cats | Ford Mustang GT S550 FM GEN 6 2014–2017 | H2-FM15KITXForce XForce Header and Cat Kit Ford Mustang GT S550 FM H2 FM15KIT Unleash the full potential of your Ford Mustang GT S550 with the Xforce Header Kit. This precision engineered 4 1 design features large 1 7 8" primary pipes that significantly reduce backpressure and improve exhaust scavenging for massive power and torque gains. Note: This kit only bolts directly to Xforce cat back systems and requires an ECU tune and PEX4178 loom extensions for

XForce XForce Header and Cat Kit - Ford Mustang GT S550 FM - H2-FM15KIT

Unleash the full potential of your Ford Mustang GT S550 with the Xforce Header Kit. This precision-engineered 4-1 design features large 1-7/8" primary pipes that significantly reduce backpressure and improve exhaust scavenging for massive power and torque gains. Note: This kit only bolts directly to Xforce cat-back systems and requires an ECU tune and PEX4178 loom extensions for installation.

What's in the Box?

  • 1x 1-7/8" Tuned-length Headers (Pair)
  • 2x 3" 200-Cell High-Flow Metallic Catalytic Converters
  • All Necessary Installation Gaskets & Bolts

Features:

This product offers the following high-performance features:

        
  • Tuned Length Primaries: 1-7/8" (47mm) primary pipes optimized for maximum exhaust flow and V8 performance.
  •     
  • High-Flow Metallic Cats: Dual 3" 200-cell metallic converters ensure unrestricted airflow while maintaining essential emissions functionality.
  •     
  • 409 Stainless Steel: Constructed from non-polished 409-grade stainless steel for high-heat durability and long-term reliability.

Specifications:

            
  • Make: Ford
  •         
  • Model: Mustang GT S550
  •         
  • Year Range: 2014–2017
  •         
  • Material: 409 Stainless Steel
  •         
  • Pipe Size: 1-7/8" Primaries to 3" Outlet

Important Information

  • The image shown may not reflect the actual product
  • Shipping times may vary depending on destination and stock availability

Vehicle Applications:

Vehicle Applications for H2-FM15KIT
Make Model From To Body Series Engine Variant Drivetrain
FORD
FORD MUSTANG 01/2015 07/2017 Coupe GEN 6 5.0L V8 RWD
FORD MUSTANG 12/2014 07/2017 Convertible FM, FN MF8F | 5.0L GT RWD
FORD MUSTANG 12/2014 07/2017 Coupe FM, FN MF8F | 5.0L GT RWD
FORD MUSTANG 08/2014 07/2017 Convertible FM COYOTE | 5.0L GT RWD
FORD MUSTANG 08/2014 07/2017 Coupe FM COYOTE | 5.0L GT 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: 18287384539

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DD
Los Angeles, US
★★★★★ 1
Worthless. Tore on first use.
Flavor Name: XL silicone socks 2 pairs
The first time I put these on my feet, the whole toe broke right through. They were a proper fit and my feet are well pedicured. Just very poor quality. I don’t recommend.
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Reviewed in the United States on August 2, 2024
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Pat Belanger
Louisville, US
★★★★★ 5
Best fit!
Flavor Name: XL silicone socks 2 pairs
Search no further, these are the BEST! They are smazing at conforming to the shape of your feet. They fit snuggly with no sags/bags or uncomfortable pressure or squeezing of your toes.
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Reviewed in the United States on March 8, 2025
T
Verified Purchase
Tasha U
Phoenix, US
★★★★★ 4
Helps dry, cracked feet
Flavor Name: XL silicone socks 2 pairs
We use these on my husband’s cracked feet in the winter and put on a thick cream under these socks. They are nice because hair, dirt and that kind of stuff doesn’t stick to the outside. I do wish them came in more sizes and colors. They were a little small for my husband, but still worked good enough. My husband isn’t thrilled about wearing pink socks around the house. At least it’s just around the house and not out in public though.
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Reviewed in the United States on March 6, 2025
K
Verified Purchase
KB
Waukegan, US
★★★★★ 5
Be aware! Once they are on, do not walk! 😂
Flavor Name: XL silicone socks 2 pairs
I absolutely love these things. But the first time I put them on in the living room. The walk to my bedroom was VERY interesting 😂😂😂 I now know I need to put them on and hang out for a bit, or simply go to bed. They do exactly what I need them to do. Feet feel great afterwards! With the right lotion, only need to use one every couple of weeks.
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Reviewed in the United States on January 10, 2025
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Verified Purchase
Marti
Lake Worth, US
★★★★★ 5
Transformed my feet
Flavor Name: XL silicone socks 2 pairs
After trying several other brands that actually my size did not have the luxury feeling of these. T although x large they have the BEST feel and function. I put lotion on then slip them on and within a few minutes my dry cracked heals are soft. Really a nice product.
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Reviewed in the United States on July 24, 2024

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