aFe Large Bore-HD Cat-Back Exhaust System
2003–2004 Dodge Ram 2500 / Ram 3500
49-12005
Overview:
The aFe Large Bore-HD Cat-Back Exhaust System is engineered specifically for 2003 to 2004 Dodge Ram 2500 and Ram 3500 trucks, delivering enhanced performance and aggressive sound. Designed for enthusiasts seeking to improve horsepower, torque, and exhaust flow, this system replaces the restrictive factory exhaust with a high-flow, mandrel-bent aluminized steel setup. It offers a significant upgrade in power delivery and thermal efficiency, making it ideal for heavy-duty applications and towing demands.
Built by aFe, a trusted name in performance automotive parts, this exhaust system balances durability with performance gains, ensuring your Ram runs stronger and sounds more commanding on the road.
Key Features:
This Large Bore-HD Cat-Back Exhaust System incorporates advanced engineering to maximize flow and durability. Key features include:
- 4-inch mandrel-bent aluminized steel tubing for smooth, unrestricted exhaust flow
- High-flow, straight-through perforated muffler (8" diameter x 30" length) for aggressive sound and minimal backpressure
- Includes a straight muffler delete pipe option for maximum flow and louder exhaust note
- Bayonet-style hangers with swaged ends for secure, rattle-free installation
- Slotted and swedged pipe ends paired with premium band clamps for a tight, leak-free seal
- Designed to increase exhaust flow by up to 29% and reduce exhaust gas temperatures by up to 100°F
- Constructed from durable 409 stainless steel for corrosion resistance and long service life
- Maintains factory mounting points and includes a 2-piece tailpipe for easy adjustment
- Tested on flow benches and dynamometers to optimize pipe diameter and muffler design
- Backed by a 2-year limited warranty for peace of mind
Construction & Design:
The Large Bore-HD Cat-Back Exhaust System is crafted from premium 409 stainless steel, chosen for its excellent corrosion resistance and durability under harsh conditions. The exhaust tubing is mandrel bent to preserve a consistent 4-inch diameter throughout the system, eliminating restrictions caused by sharp bends that can reduce flow by up to 20%. This precision bending ensures smooth exhaust gas movement, improving engine efficiency and power output.
All pipes feature slotted and swedged ends to create a secure, leak-free connection when combined with the supplied high-quality band clamps. The hangers are fully welded with swaged bayonet ends, locking the system firmly in place while utilizing the factory mounting locations for a straightforward installation.
Performance & Sound
Designed to enhance both performance and auditory experience, this cat-back system increases exhaust flow by up to 29%, which contributes to improved horsepower and torque. Additionally, it lowers exhaust gas temperatures by as much as 100°F, helping to maintain optimal engine operating conditions during heavy loads or towing.
The included straight-through perforated muffler delivers an aggressive, loud exhaust tone that complements the power gains without excessive drone. For those seeking an even more pronounced sound and maximum flow, the system includes a muffler delete pipe option, allowing customization of the exhaust note to suit personal preference.
Installation & Fitment:
The aFe Large Bore-HD Cat-Back Exhaust System is designed for a direct bolt-on installation on 2003 and 2004 Dodge Ram 2500 and Ram 3500 models. It uses all factory mounting points and includes detailed instructions, clamps, and hangers to facilitate a secure and leak-free fit. The two-piece tailpipe design allows for easy adjustment to ensure proper alignment and clearance.
No cutting or welding is required, making this system an accessible upgrade for experienced DIYers or professional installers alike.
What's Included:
- 4-inch mandrel-bent aluminized steel exhaust tubing
- 8" diameter x 30" length straight-through perforated muffler
- Straight muffler delete pipe
- Premium band clamps for secure connections
- Fully welded bayonet-style hangers
- 2-piece adjustable tailpipe
- Detailed installation instructions
Ideal For:
This exhaust system is ideal for Dodge Ram 2500 and 3500 owners from model years 2003 to 2004 who demand enhanced engine performance, improved exhaust sound, and increased durability. It is especially suited for heavy-duty truck users who tow or haul regularly and want to reduce exhaust gas temperatures while gaining horsepower and torque. Enthusiasts looking for a bold, aggressive exhaust note without sacrificing reliability will also appreciate this upgrade.
