MagnaFlow Competition Series Cat-Back Exhaust System

Jeep Wrangler 00-06 4.0L/2.5L

Part #: 16390

Overview

The MagnaFlow Competition Series Cat-Back Exhaust System is a performance upgrade designed specifically for Jeep Wrangler models from 2000 to 2006 equipped with 2.4L, 2.5L, and 4.0L engines. This system replaces the exhaust components from just behind the catalytic converter to the rear exit, delivering a bold and aggressive exhaust tone that enhances the Wrangler’s iconic sound without overwhelming cabin comfort. It is engineered for Jeep enthusiasts who want to improve power output and throttle response while maintaining a refined yet sporty exhaust note.

With dyno-proven gains in horsepower and torque, this cat-back system offers a perfect balance of performance and style. Its direct-fit design ensures a straightforward installation process, making it accessible for both professional mechanics and experienced DIY installers.

Key Features

Built to elevate your Jeep Wrangler’s performance and sound, the MagnaFlow Competition Series Cat-Back Exhaust System includes:

• Mandrel-bent 2.5-inch main piping for optimal exhaust flow and minimal restriction
• Single straight-through muffler design that balances aggressive sound with performance
• Polished 2.75-inch welded-on single wall turndown cut edge tips for a sporty rear finish
• Cat-back configuration replacing exhaust components from just behind the catalytic converter
• Advanced 3D scanning technology for precise direct-fit installation
• Durable 409 stainless steel construction for corrosion resistance and long-lasting durability
• CNC precision robotic manufacturing ensuring consistent quality and perfect fitment
• Aggressive exterior sound with moderate interior noise levels, ideal for competition-style driving
• Backed by MagnaFlow’s limited lifetime warranty for peace of mind

Construction & Design

This exhaust system is crafted from 100% 409 stainless steel, known for its excellent corrosion resistance and durability under harsh driving conditions. The mandrel-bent tubing maintains a consistent diameter throughout bends, preventing flow restrictions and promoting efficient exhaust scavenging for improved engine performance.

Manufactured using CNC robotic precision, the system guarantees tight tolerances and a perfect fit to your Jeep Wrangler. The polished welded-on tips not only enhance the visual appeal but also provide a rugged, sporty look that complements the vehicle’s off-road character. The single straight-through muffler design reduces backpressure, improving exhaust flow and engine efficiency.

Performance & Sound

The MagnaFlow Competition Series Cat-Back Exhaust System is tuned to produce a deep, resonant exhaust note that commands attention without excessive drone inside the cabin. This aggressive exterior sound profile complements the Jeep Wrangler’s rugged personality, making it ideal for both off-road adventures and street driving. Enhanced exhaust flow contributes to noticeable improvements in horsepower, torque, and throttle response, delivering a more engaging driving experience.

Installation & Fitment

Designed as a direct-fit replacement for the factory exhaust system on 2000–2006 Jeep Wrangler models with 2.4L, 2.5L, and 4.0L engines, this cat-back system installs easily using existing mounting points and hardware. Advanced 3D scanning ensures precise alignment and fitment, minimizing installation time and effort. Typically, no cutting or welding is required, making this an accessible upgrade for both professional installers and skilled DIY enthusiasts.

What's Included

• Mandrel-bent 2.5-inch stainless steel main piping
• Single straight-through muffler
• Polished 2.75-inch welded-on single wall turndown cut edge tips
• All necessary clamps and hardware for installation
• Detailed installation instructions

Ideal For

• Jeep Wrangler owners seeking enhanced performance and a distinctive exhaust tone
• Off-road enthusiasts requiring a durable, corrosion-resistant exhaust system
• Drivers wanting an aggressive exhaust sound without excessive cabin noise
• Those preferring a direct-fit, bolt-on upgrade with minimal installation hassle
• Competition-style drivers desiring improved throttle response and a sporty exhaust finish

MagnaFlow is a performance exhaust manufacturer best known for cat‑back and axle‑back systems, mufflers, and catalytic converters engineered for quality sound and improved flow. Their vehicle-specific exhaust options span muscle, import, and truck applications—making MagnaFlow a staple upgrade when you want a deeper tone, cleaner fitment, and a proven performance-focused exhaust setup.