Stainless Works

Fits 2011–2014 Ford Mustang GT

Part #: M12HDRCATX

Overview

Upgrade your 2011-14 Mustang GT with Stainless Works high-performance headers designed to maximize exhaust flow and engine response. Crafted from durable TIG-welded 304 stainless steel, these headers feature 1-7/8" primary tubes that optimize exhaust scavenging, helping your vehicle achieve improved horsepower and torque. The system is engineered for enthusiasts seeking a combination of performance, durability, and a refined exhaust note, making it an ideal choice for those looking to enhance their Mustang’s overall driving experience. This header and X-pipe assembly is tailored for Mustang owners who demand quality and performance. It seamlessly integrates with Stainless Works’ full exhaust systems, providing a 3" diameter pathway that supports increased airflow and exhaust efficiency. The high-flow catalytic converters ensure compliance with emissions standards while maintaining optimal performance. Designed for bolt-on installation, this system offers a straightforward upgrade that can be installed with basic mechanical skills, making it suitable for both DIY enthusiasts and professional installers.

Key Features

This system combines premium materials and thoughtful design to deliver reliable performance and longevity. Key features include:

• Constructed from TIG-welded 304 stainless steel for corrosion resistance and durability
• 1-7/8" primary tubes engineered for optimal exhaust scavenging and response
• 3" slip-fit collectors with merge spikes for smooth exhaust flow
• Includes high-flow catalytic converters for emissions compliance and performance
• Designed to connect seamlessly with Stainless Works Performance Connect exhaust systems
• Robust 3" diameter piping for maximum exhaust flow and power gains
• Lifetime guaranteed bolt-on system for lasting performance

Construction & Design

The headers feature precision TIG welding and 3/8" thick flanges to ensure a secure, leak-free seal. The merge spikes on the collectors help improve exhaust scavenging, contributing to better engine efficiency. The high-flow catalytic converters are designed to provide optimal emissions performance without sacrificing flow capacity, making this system both high-performing and environmentally considerate.

Driving Feel & Feedback

This header and X-pipe setup enhances exhaust flow, resulting in a more aggressive sound and improved throttle response. The increased airflow supports better engine breathing, which can translate into noticeable gains in power and a more engaging driving experience. The system is designed to deliver a deep, resonant exhaust tone that complements the Mustang’s sporty character.

Installation & Fitment

Designed for direct bolt-on installation, these headers require no modifications for compatible 2011-14 Mustang GT models. Proper installation may involve removing existing exhaust components and ensuring proper fitment of the high-flow cats and collectors. Basic mechanical skills and standard tools are sufficient for a straightforward upgrade.

What’s Included

The package includes the TIG-welded headers, high-flow catalytic converters, and slip-fit collectors with merge spikes, providing everything needed for a complete upgrade. Hardware and gaskets are typically included or recommended separately based on installation specifics.