Kooks Headers

Fits 2015–2021 Ford Mustang Shelby GT350 and Shelby GT350R

Part #: 1154H320

Overview

The Kooks 15-21 Ford Mustang Shelby GT350R Header & Catted X-Pipe Kit is a high-performance exhaust upgrade designed specifically for Shelby GT350 and GT350R models from 2015 to 2021. Crafted with precision and built for enthusiasts seeking improved exhaust flow, this kit enhances your vehicle’s sound, response, and overall performance. Whether you’re a street driver or a track enthusiast, this system offers a significant upgrade over stock components, helping your Mustang achieve a more aggressive tone and optimized exhaust efficiency. Constructed from high-quality materials, the headers and X-pipe are engineered to withstand the rigors of high-performance driving while maintaining durability and longevity. The kit is designed for easy installation, providing a direct bolt-on upgrade that fits seamlessly with your vehicle’s existing exhaust system. It’s ideal for those looking to maximize horsepower, improve throttle response, and achieve a more commanding exhaust note.

Key Features

This header and X-pipe kit features a meticulously crafted design focused on performance and durability. Made from premium stainless steel, it resists corrosion and heat, ensuring long-lasting performance. The 1-3/4 inch primary tubes combined with 1-7/8 inch collectors optimize exhaust flow, reducing backpressure and increasing power output. The catted X-pipe configuration balances performance gains with emissions compliance, making it suitable for street use. The kit’s precision welds and high-quality construction ensure a reliable fit and finish, elevating both the look and sound of your Mustang.

Construction & Design

The headers are designed with mandrel-bent tubing to maximize airflow and minimize turbulence. The stainless steel construction provides excellent heat resistance and durability, while the ceramic coating helps manage under-hood temperatures. The X-pipe features a smooth, mandrel-bent design that enhances exhaust scavenging, contributing to improved power and throttle response.

Installation & Fitment

Designed as a direct bolt-on upgrade, this kit requires no modifications for installation on compatible 2015–2021 Shelby GT350 and GT350R models. Proper tools and basic mechanical knowledge are recommended for installation to ensure a secure and precise fit.

What’s Included

The kit includes all necessary headers and catted X-pipe components, along with hardware required for installation, providing a comprehensive upgrade package for your Mustang’s exhaust system.

Ideal For

Perfect for Mustang owners looking to enhance their vehicle’s sound, response, and overall performance. Suitable for street and track use, this kit helps unlock your Shelby GT350’s full potential with a high-quality, durable exhaust upgrade.