Stainless Works Headers

Fits 2011–2014 Ford Mustang GT

Part #: SM11HCATX

Overview

Upgrade your 2011-14 Mustang GT with the Stainless Works headers, designed to enhance your vehicle’s exhaust flow and overall performance. Crafted from high-quality 304 stainless steel, these headers are engineered for durability, precision fitment, and maximum efficiency. They are ideal for enthusiasts seeking to improve exhaust sound, response, and power output while maintaining a reliable, lifetime-guaranteed system. Whether you're building a performance-oriented street machine or a track-ready Mustang, these headers provide a significant upgrade over stock manifolds. Constructed with 1-7/8" primary tubes, these headers optimize exhaust scavenging, helping to reduce backpressure and improve throttle response. The tig-welded construction ensures strength and longevity, while the 3/8" thick flanges provide a secure seal and resistance to warping. The slip-fit collectors with merge spikes facilitate smooth exhaust flow, contributing to a more aggressive sound and enhanced performance.

Key Features

Designed for durability and performance, these headers feature:

• High-quality TIG-welded 304 stainless steel construction
• 1-7/8" primary tubes for optimal exhaust flow
• 3" diameter slip-fit collectors with merge spikes for smooth merging
• 3" catted lead pipes that connect seamlessly to the factory system
• Heavy-duty 3/8" thick flanges for a secure, leak-free seal
• Replaces factory manifolds, catalytic converters, and H-pipe for improved exhaust efficiency
• Lifetime guarantee for long-lasting performance

Construction & Design

These headers are meticulously TIG-welded from 304 stainless steel, ensuring corrosion resistance and structural integrity. The precise machining of flanges and collectors guarantees a perfect fit and easy installation, making them a reliable upgrade for your Mustang.

Performance & Response

By replacing restrictive factory components, these headers help improve exhaust flow, resulting in better throttle response and a more aggressive exhaust note. The optimized primary tube diameter and merge spike design support efficient scavenging, which can contribute to slight increases in horsepower and torque.

Installation & Fitment

Designed as a bolt-on upgrade, these headers are intended to replace the factory manifolds and catalytic converters directly. Proper installation may require basic mechanical skills and standard tools. Ensure compatibility with your specific vehicle model and engine configuration before installation.

What’s Included

These headers come complete with all necessary hardware for a straightforward installation, including gaskets and mounting hardware, to ensure a secure and leak-free connection.