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
Save 10%

Shipping Estimate
USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Jul 14 - Jul 19

Promo Codes Available:

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

Discover Niche Categories That Outsell

Top-Converting Item to Boost Your Average Order

4.9 ★★★★★
Based on 2125 reviews
Sort
Highest Rating
Newest First
Oldest First
Product Reviews
T
Verified Purchase
Talagand
Birmingham, US
★★★★★ 4
Reasonably adequate room divider
Size: 4 Panel-88'', Color: Beige
I'm reviewing this as I assemble it. Couple things: 1. I didn't expect as much assembly. I've ordered dividers before and they more-or-less came as one unit. Sometimes the panels needed screwing together. These require complete assembly and come largely as three rods: two make up vertical columns and snap together. Another one (called part "C") makes the horizontal columns and you have two of these per panel (one attaches to part "A" and the other part "B"). These parts are metal with a plastic shim. Using the wood screws to attach to part "C" is a real pain in the neck. There's not much holding the panel in place so it's a little tricky. One tactic I've found while I'm assembling that works for the initial connections from parts A and B to their respective "C" rods is to hold the screw in place with a screw driver and then rotating the rod around the screw. This will do a number on your hands if you aren't wearing gloves. This obviously doesn't work when completing the connection. Using a driller driver on this is really near impossible because there isn't anything you can use to secure it in place. You can use it on the first panel, but as it gets longer, it becomes increasingly difficult and because it isn't wood, it's really tight. I considered drilling larger pilot holes but since there are only 4x4=16 screws I need to screw in, I just decided to use my screw driver to complete it. 2. Also related to assembly. When completing the panels (attaching parts "A" and "B" to parts "C" that have the cloth cover on it), you have to be careful that when you tighten that side that it isn't loosening the other side. Because the pilot holes are so tight, you can end up rotating the rod, which rotates it in the same direction as looser on the original side. Having someone hold the "C" rod in place while you screw it in is probably the easiest approach. I didn't have a 2nd person, so I just had to keep flipping back and forth and tightening both sides as I screwed it in. Not the worlds biggest deal, but annoying nonetheless. 3. The way the instructions are written, they seem to suggest building this thing progressively; that is, you do panel 1, then 2, connect them together, then do 3 and connect it, etc. I took a different route that I suspect saved me quite a bit of trouble, and I assembled all four panels first and THEN connected everything together. 4. For the love of God make sure you check that the plastic tip is on the same side for every panel. Otherwise, you have to take one side apart again and reverse it. On the bright side, if this happens, you've essentially bored out the pilot holes to be the correct size... which is having me question if I shouldn't have just bored them out to the appropriate width in the first place. 5. Attaching all of the panels together is also an enormous pain in the ass unless you happen to have an 88" long elevated surface. Attaching the legs either requires you to elevate one side, which will invariably twist the inexplicably cheap material in the bottom connectors... or you can attach them sideways... or you can put this thing upright, having two people hold the panels in place while you use the allen wrench to tighten the bolts on the underside. None of those are particularly great options. NOW on to the utility itself. 1. The panels do let some light through (I didn't believe their advertising, and that was one of the reasons that I bought beige, is that I wanted it to not be too dark). They aren't transparent though, so it isn't that far off from their description. They functionally work great, and keep the mess of wires hidden and when I'm sitting at my desk, actually reflect quite a bit of light into my office. Great! 2. My wife has described these as "the most hideous piece of furniture ever conceived of by man." So it does not have spouse approval factor. Granted, she will seldom be in my office area, so that isn't the end of the world. 3. These are really hard to align in a way that doesn't look a little tacky. There are some plastic connectors but they don't do a bang up job of keeping these in place. Each panel is slightly tilted and it's... quite obvious. I may at some point make my own improvements to these to help make them more level. It's not a particularly expensive product so I wasn't expecting much so it's fine and I'm not going to ding them on the rating because of it. All said, would I buy this product again? Probably not. It's assembly was ~90 minutes which is about 75 minutes longer than I was anticipating spending on this (not including the 5 minute writeup that I'm doing here). But am I going to return it? Also no, if for no other reason I'd be just as annoyed taking it apart and putting it in the original box to return it.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 31, 2023
C
Verified Purchase
creativecow
Bozeman, US
★★★★★ 5
Game-Changer for My Space!
Color: White, Size: 4 Panel Basic
I recently purchased the Kecreque 4-Panel Room Divider, and it has completely transformed my living area. At 88" wide, it provides ample coverage, creating a private nook in my open-concept home. The white polyester fabric is not only sleek and modern but also wrinkle-resistant and easy to clean—just a quick wipe with a damp cloth, and it looks brand new. Assembly was a breeze; I had it set up in about 20 minutes. The metal frame feels sturdy and durable, and the three extra-wide metal feet offer excellent stability, ensuring it doesn't tip over easily. I love how the panels are connected with flexible buckles, allowing me to adjust the configuration to suit my needs—be it a straight line or an angled setup. This divider has been perfect for creating a dressing area in my bedroom, and I've also used it to section off a workspace in my living room. Its versatility is unmatched, and it folds down compactly when not in use, making storage hassle-free. If you're looking for a stylish, functional, and easy-to-use room divider, I highly recommend this one. It's been a fantastic addition to my home!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 7, 2025
M
Verified Purchase
Megan
Boise, US
★★★★★ 5
Sturdy and Functional
Color: White, Size: 4 Panel Basic
I got this to replace a poor quality divider that I tried first, and this thing is the best! It is easily folded, stands sturdily, easy to assemble, and the fabric looks great. Very very happy with the quality for the price.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 17, 2026
L
Verified Purchase
L. E. Morales
Pawtucket, US
★★★★★ 1
Arrived damaged
Color: Black, Size: 4 Panel Basic
Unfortunately, very cheaply made. It arrived with one of the connecting tubes cracked horizontally. Possibly due to bad welding. It is quite a headache to assemble. It was delivered on time but returned for a refund.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 8, 2026
E
Verified Purchase
Elisabeth Baird Bennett
San Leandro, US
★★★★★ 3
Not a great experience but a fine product
Color: Black, Size: 4 Panel Basic
not enough screws were included to make the wall. I was able to locate more screws to finish building-so I didn’t have to return the product- but it was a pain and I got lucky finding the pieces I needed but it could’ve been a fail and a returned product
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 12, 2026

recommand products