MBRP Cat Back Exhaust System

Jeep Wrangler 04-06 4.0L I6

Part #: S5520409

Overview

The MBRP Cat Back Exhaust System with a single turndown exit is designed specifically for the Jeep Wrangler TJ Unlimited models from 1997 through 2006 equipped with the 4.0L engine. This exhaust system offers a perfect balance of performance enhancement and aggressive sound, making it an excellent upgrade for Jeep enthusiasts seeking improved exhaust flow and a race-inspired tone. Crafted to deliver both durability and style, it is ideal for drivers who want to enhance their Wrangler’s exhaust note while maintaining reliable operation in moderate climates.

Whether you’re hitting the trails or cruising on the highway, this cat back system provides noticeable gains in exhaust efficiency and a commanding presence that complements the rugged character of your Jeep Wrangler.

Key Features

Engineered for performance and durability, the MBRP Cat Back Exhaust System includes the following key features:

• Constructed from T409 stainless steel for a durable, corrosion-resistant finish suitable for moderate climates
• 2.5-inch tubing diameter optimized for improved exhaust flow and power gains
• Single turndown exit design that enhances exhaust sound and adds a distinctive visual appeal
• Race Profile sound tuning delivers an aggressive, track-inspired exhaust note
• Direct bolt-on fitment for Jeep Wrangler TJ Unlimited 4.0L models from 1997 to 2006
• Includes all necessary hardware for straightforward installation
• Lifetime warranty backing the material and craftsmanship

Construction & Design

This exhaust system is crafted from T409 stainless steel, a value-focused material that offers the same aesthetic appeal as premium T304 stainless steel but with slightly reduced durability. It is well-suited for moderate climates where occasional exposure to rain occurs. The robust construction ensures resistance to rust and corrosion, extending the life of the exhaust system while maintaining a polished, professional look.

The 2.5-inch tubing is designed to optimize exhaust gas flow, reducing backpressure and improving engine efficiency. The single turndown exit not only provides a unique styling element but also directs exhaust gases away from the vehicle, enhancing both sound and safety.

Performance & Sound

The MBRP Cat Back Exhaust System features a Race Profile sound, delivering a deep, aggressive tone that commands attention. This profile is engineered to maximize the auditory presence of your Jeep, making it sound like it belongs on a race track. The enhanced exhaust flow contributes to improved throttle response and can help unlock additional power from the 4.0L engine.

Installation & Fitment

Designed for a direct bolt-on installation, this cat back exhaust system fits Jeep Wrangler TJ Unlimited models equipped with the 4.0L engine from 1997 to 2006. Installation requires no cutting or welding, making it accessible for enthusiasts with basic mechanical skills. All necessary mounting hardware is included to ensure a secure and proper fit.

What's Included

• MBRP Cat Back Exhaust System with single turndown exit
• All required clamps, hangers, and mounting hardware
• Installation instructions

Ideal For

This exhaust system is ideal for Jeep Wrangler TJ Unlimited owners who want to enhance their vehicle’s performance and sound without compromising reliability. It suits off-road enthusiasts, daily drivers, and anyone looking to add a race-inspired exhaust note and improved exhaust flow to their 4.0L Jeep Wrangler.

MBRP builds performance exhaust systems engineered for bold sound, improved flow, and durable fitment across gas and diesel trucks, as well as select cars. From workhorse tow rigs to weekend builds, MBRP is known for offering multiple series and configurations so owners can choose the tone and construction that match how hard the vehicle gets driven.