aFe Large Bore-HD Exhaust System

2007.5–2012 RAM 2500/3500 6.7L

Part #: 49-42016

Overview

The aFe Large Bore-HD 5" 409 Stainless Steel DPF-Back Exhaust System is engineered for RAM 2500 and 3500 trucks equipped with the 6.7L engine from model years 2007.5 through 2012. Designed to excel in demanding environments, this exhaust system enhances your truck’s performance by improving exhaust flow and reducing exhaust gas temperatures. It is an ideal upgrade for diesel truck owners seeking increased horsepower and torque without sacrificing durability or fitment quality.

Built to integrate seamlessly with your vehicle, this system uses factory mounting points to ensure a secure and hassle-free installation. Whether you’re towing heavy loads or navigating tough terrain, the aFe Large Bore-HD exhaust system delivers reliable performance and a commanding exhaust note.

Key Features

This exhaust system combines advanced engineering with high-quality materials to optimize your RAM’s performance and sound. Key features include:

• Mandrel bent 4-inch 409 stainless steel tubing for maximum exhaust flow and durability
• DPF-back design to maintain emissions compliance while enhancing performance
• Factory mounting locations for straightforward, bolt-on installation
• High-quality OE-style flange and band clamps providing a complete 360-degree sealing surface
• Free-flowing 24-inch muffler designed to absorb high-pitched tones and produce a deep, powerful sound
• OE-style bayonet hangers that maintain stable pipe positioning under high vibration and heat
• Bayonet tip design to securely hold hanger bushings for a consistent OE-style fit over time
• Constructed to withstand extreme heat and harsh operating conditions

Construction & Design

The aFe Large Bore-HD exhaust system is crafted from premium 409 stainless steel tubing, known for its excellent corrosion resistance and strength under high temperatures. The tubing is mandrel bent to ensure smooth, unrestricted exhaust flow, which helps reduce backpressure and improve engine efficiency.

Every component is engineered to meet or exceed OEM standards. The use of OE-style flanges, clamps, and hangers guarantees a precise fit and long-lasting durability. The bayonet hanger system is specifically designed to hold the exhaust securely in place, preventing sagging or misalignment even under the rigors of heavy-duty use.

Performance & Sound

This exhaust system is designed to unlock the full potential of your 6.7L Cummins engine by improving exhaust flow and lowering exhaust gas temperatures (EGTs). The result is increased horsepower and torque, which translates to better towing capability and overall vehicle responsiveness.

The 24-inch free-flowing muffler effectively reduces high-pitched exhaust tones, delivering a deep, aggressive sound that enhances the driving experience without excessive drone. This balance of performance and sound makes it an excellent choice for enthusiasts who want both power and refinement.

Installation & Fitment

The aFe Large Bore-HD exhaust system installs using all factory mounting points, which means no cutting, welding, or modifications are required. The system is designed for a direct bolt-on fit for RAM 2500 and 3500 models from 2007.5 to 2012 with the 6.7L engine, ensuring a straightforward and hassle-free installation process.

OE-style bayonet hangers and clamps simplify alignment and secure the exhaust system firmly in place, maintaining proper clearance and reducing the risk of rattles or vibrations over time.

What's Included

• Mandrel bent 4" 409 stainless steel tubing
• DPF-back exhaust components
• Free-flowing 24" muffler
• OE-style flange and band clamps
• OE-style bayonet hangers and bushings
• Installation hardware

Ideal For

This exhaust system is perfect for RAM 2500 and 3500 owners who demand improved performance, durability, and sound from their diesel trucks. It is especially suited for those who tow heavy loads, work in extreme conditions, or simply want to enhance their vehicle’s power and exhaust tone without compromising factory fitment or reliability.

aFe POWER (Advanced FLOW Engineering) offers dyno-proven intake, filtration, and exhaust upgrades aimed at measurable performance gains. The brand’s lineup is geared toward enthusiasts looking for better airflow, improved sound, and durable materials—from cold air intakes to stainless exhaust systems for street and track applications.