MagnaFlow SYS C/B Exhaust: Jeep Wrangler 2004-2006

MagnaFlow Off-Road Pro Series Cat-Back Exhaust System

2004–2006 Jeep Wrangler 4.0L

17121

Overview:

The MagnaFlow Off-Road Pro Series Cat-Back Exhaust System is engineered specifically for the 2004 to 2006 Jeep Wrangler equipped with the 4.0L engine. Designed to enhance your Jeep’s off-road capabilities, this exhaust system delivers a deep, aggressive exhaust tone that complements the rugged nature of your vehicle. Built with durability and performance in mind, it offers a direct-fit solution that improves ground clearance while providing a signature MagnaFlow sound experience.

This exhaust system is ideal for Jeep enthusiasts seeking to upgrade their factory exhaust for improved sound, durability, and off-road performance without compromising emissions compliance. Its weight-optimized design and corrosion-resistant materials ensure long-lasting reliability in demanding environments.

Key Features:

The MagnaFlow 17121 exhaust system combines advanced engineering and high-quality materials to deliver superior performance and sound. Key features include:

• Direct-fit cat-back design engineered using extensive 3D scanning for precise undercarriage fitment
• 2.5-inch diameter mandrel-bent main piping for optimal exhaust flow
• Single straight-through muffler design to maximize performance and minimize restriction
• 3-inch satin-finished clamp-on single-wall turndown cut edge tips for a clean, aggressive rear exit
• Very aggressive exterior and aggressive interior sound levels tailored for off-road enthusiasts
• Corrosion-resistant, durable stainless steel construction for long service life
• Weight-optimized design that closely hugs the undercarriage to improve ground clearance
• Manufactured using advanced CNC precision robotic techniques for consistent quality
• Emissions-legal design replacing all exhaust components from the catalytic converter back
• Backed by MagnaFlow’s limited lifetime warranty for peace of mind

Construction & Design:

Constructed from 100% stainless steel, the MagnaFlow Off-Road Pro Series exhaust system is built to withstand harsh off-road conditions and resist corrosion over time. The use of mandrel-bent tubing ensures smooth exhaust flow without restrictions or turbulence, enhancing both performance and sound quality. The system’s design was refined through extensive 3D scanning of the Jeep Wrangler’s undercarriage, allowing the exhaust to fit snugly and maintain optimal ground clearance—an essential factor for off-road driving.

Precision robotic manufacturing guarantees consistent weld quality and fitment accuracy, while the satin finish on the exhaust tips adds a subtle yet aggressive aesthetic touch that complements the rugged styling of the Jeep Wrangler.

Performance & Sound

This cat-back exhaust system is engineered to produce a very aggressive exterior sound that commands attention, paired with an aggressive yet refined interior tone that enhances the driving experience without being overwhelming. The straight-through muffler design minimizes backpressure, promoting improved exhaust flow and potentially aiding throttle response. The 3-inch turndown tips provide a distinctive exhaust exit that enhances the overall sound character.

Installation & Fitment:

The MagnaFlow 17121 exhaust system is designed for a straightforward, do-it-yourself installation with no modifications required. Its direct-fit design replaces all exhaust components from the catalytic converter back, ensuring a seamless swap with factory mounting points and hardware. This system fits the following Jeep Wrangler models equipped with the 4.0L engine:

• Jeep Wrangler 65th Anniversary Edition (2006)
• Jeep Wrangler Rubicon (2004–2006)
• Jeep Wrangler Sahara (2004)
• Jeep Wrangler SE (2005–2006)
• Jeep Wrangler Sport (2004–2006)
• Jeep Wrangler Unlimited (2004–2006)
• Jeep Wrangler Unlimited Rubicon (2005–2006)
• Jeep Wrangler X (2004–2006)

All necessary clamps and hardware are included to facilitate a secure and reliable installation.

What's Included:

• 2.5-inch diameter mandrel-bent stainless steel piping
• Single straight-through muffler
• 3-inch satin clamp-on single-wall turndown cut edge tips
• All required clamps and mounting hardware
• Installation instructions

Ideal For:

This exhaust system is perfect for Jeep Wrangler owners who want to enhance their vehicle’s off-road performance and sound without sacrificing durability or emissions compliance. It suits enthusiasts who appreciate a deep, aggressive exhaust note and require a robust system capable of handling rugged terrain and demanding driving conditions. Whether you’re tackling trails or cruising on the street, the MagnaFlow Off-Road Pro Series Cat-Back exhaust delivers a balanced combination of performance, sound, and reliability.