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

XForce | 1 7/8" Tuned-Length Headers & 3" Cat Kit | Ford Mustang GT S550 2018–2023 | H2-FM18-KITB
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 |
| 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.
Original: $949.43
-65%$949.43
$332.30Product Information
Product Information
Shipping & Returns
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Description
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 |
| 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.











