aFe Rebel Series Exhaust System (REAR)

2019–2021 Ram 2500 / 3500 6.4L 392

Part #: 49-42082-B

Overview

The aFe Rebel Series Exhaust System (REAR) is a premium cat-back exhaust upgrade designed specifically for the 2019 to 2021 Ram 2500 and 3500 equipped with the 6.4L 392 HEMI engine. This system delivers a perfect balance of enhanced performance, aggressive sound, and rugged durability, making it an excellent choice for truck enthusiasts seeking to unleash the full potential of their heavy-duty Ram. Engineered for strength and longevity, it offers a direct bolt-on installation that preserves factory fitment and reliability.

Whether you’re looking to improve exhaust flow for better throttle response or want a deeper, more commanding exhaust note, the Rebel Series exhaust system provides a noticeable upgrade without compromising daily drivability or build quality.

Key Features

Built to perform and impress, the aFe Rebel Series Exhaust System offers the following standout features:

• Constructed from 3-1/2" mandrel-bent 409 stainless steel tubing for superior strength and corrosion resistance
• High-flow 409 stainless steel muffler designed to optimize exhaust velocity and produce an aggressive, throaty tone
• Dual 4" diameter clamp-on exhaust tips crafted from 304 stainless steel, available in polished or black finishes
• Laser-etched aFe logo on each exhaust tip for a refined, custom appearance
• 100% MIG-welded construction ensuring race-proven durability and weld integrity
• Utilizes factory-style hangers for a secure, stable fit and easy installation
• Direct bolt-on design requiring no cutting, welding, or modifications
• Includes all necessary hardware for a hassle-free upgrade
• Compatible with Crew Cab / Short Bed Ram models featuring a 149-inch wheelbase

Construction & Design

The Rebel Series Exhaust System is engineered with high-grade 409 stainless steel tubing that is mandrel-bent to maintain consistent diameter and maximize exhaust flow. This material choice provides excellent resistance to rust and corrosion, ensuring long-lasting performance even in harsh environments. The system’s muffler is also crafted from 409 stainless steel, designed to enhance exhaust velocity while delivering a deep, aggressive sound signature.

Finishing touches include dual 4-inch clamp-on exhaust tips made from premium 304 stainless steel, available in polished or black finishes to suit your style preference. Each tip is laser-etched with the aFe logo, adding a subtle yet distinctive branding element. The entire system is 100% MIG-welded, providing strong, clean welds that stand up to the rigors of off-road and heavy-duty use.

Performance & Sound

The aFe Rebel Series Exhaust System is designed to improve exhaust flow, reducing backpressure and allowing your 6.4L 392 HEMI engine to breathe more freely. This results in enhanced throttle response and a more robust power delivery feel. The muffler’s design produces a deep, aggressive exhaust note that reflects the engine’s muscular character without being overly loud or droning during highway cruising.

This system strikes the perfect balance between performance gains and an aggressive sound profile, making it ideal for drivers who want their Ram to sound as powerful as it performs.

Installation & Fitment

Installation is straightforward thanks to the system’s direct bolt-on design that uses factory-style hangers. There is no need for cutting, welding, or any modifications, allowing you to upgrade your exhaust quickly and with confidence. This system is specifically engineered to fit 2019–2021 Ram 2500 and 3500 models equipped with the 6.4L 392 engine, Crew Cab / Short Bed configuration, and a 149-inch wheelbase.

Please note that this exhaust system is not compatible with Ram trucks equipped with running boards.

What's Included

• 3-1/2" mandrel-bent 409 stainless steel cat-back exhaust tubing
• High-flow 409 stainless steel muffler
• Dual 4" diameter 304 stainless steel clamp-on exhaust tips (polished or black finish)
• All necessary mounting hardware and clamps
• Factory-style hangers for direct bolt-on installation
• Installation instructions

Ideal For

This exhaust system is ideal for Ram 2500 and 3500 owners who want to enhance their truck’s performance and sound without sacrificing durability or requiring complex installation. It suits enthusiasts who demand a rugged, aggressive exhaust tone paired with reliable, long-lasting construction for daily driving, towing, or off-road use.

Emissions Note

This aFe Rebel Series Exhaust System does not require a CARB Executive Order (EO#) and is emissions-safe for applicable use, ensuring compliance with environmental regulations where enforced.

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.