aFe MACH Force-Xp Axle-Back Exhaust System

Dodge Challenger/Charger 15-23 6.4L/6.2L/5.7L

Part #: 49-42079

Overview

The aFe MACH Force-Xp Axle-Back Exhaust System is engineered to enhance the performance and sound of your Dodge Challenger equipped with the 5.7L Hemi, 6.2L Hellcat, or 6.4L 392 engines. Designed for enthusiasts seeking a more aggressive exhaust note and improved exhaust flow, this axle-back system replaces the factory rear mufflers to unleash the full potential of your muscle car. It offers a direct-fit solution that maintains factory mounting points for a seamless installation experience.

Built for drivers who demand durability and performance, the MACH Force-Xp system delivers a bold exhaust tone without compromising daily drivability. Whether you’re upgrading for street performance or spirited weekend drives, this exhaust system provides a balanced blend of power, sound, and quality craftsmanship.

Key Features

This axle-back exhaust system incorporates advanced design and manufacturing techniques to ensure superior performance and reliability. Key features include:

• Constructed from 3-inch mandrel-bent 409 stainless steel tubing for enhanced strength and corrosion resistance
• Deletes the original equipment rear mufflers to improve exhaust flow and reduce backpressure
• Utilizes factory-style hangers for a secure, direct bolt-on fit without the need for custom mounts
• 100% MIG-welded joints for race-proven durability and long-lasting performance
• Computer-aided design ensures precise fitment and high tolerance manufacturing standards
• Produces an aggressive and deep exhaust tone that complements the muscle car character
• Designed and manufactured in the USA at aFe POWER’s Corona, California facility

Construction & Design

The MACH Force-Xp Axle-Back Exhaust System is crafted from premium 409 stainless steel tubing, mandrel-bent to maintain consistent diameter and smooth exhaust flow. This material choice offers excellent resistance to heat and corrosion, ensuring longevity even under demanding driving conditions. The system’s 3-inch diameter tubing is optimized for the Dodge Challenger’s engine configurations to maximize exhaust scavenging and performance gains.

Every weld is completed using 100% MIG welding techniques, providing strong, clean, and durable seams that withstand the rigors of high-performance use. The design incorporates factory-style hangers, allowing the system to mount directly to the vehicle’s existing exhaust points, preserving the original fitment and reducing installation complexity.

Performance & Sound

By removing the restrictive OE rear mufflers, the MACH Force-Xp system frees up exhaust flow, which can help unlock additional horsepower and torque available from your Challenger’s engine. The result is a more responsive throttle and a noticeable improvement in engine efficiency. The exhaust note is aggressive and muscular, delivering a deep, throaty growl that enhances the driving experience without excessive drone during cruising.

Installation & Fitment

This axle-back exhaust system is designed for direct fitment on 2015–2020 Dodge Challenger 5.7L Hemi, 2015–2023 Dodge Challenger 6.2L Hellcat, and 2015–2023 Dodge Challenger 6.4L 392 models. Installation utilizes the factory-style hangers and mounting points for a secure and straightforward bolt-on process. Some cutting of the existing exhaust pipes may be required; detailed instructions are included to guide you through the installation steps.

What's Included

• 3-inch mandrel-bent 409 stainless steel axle-back exhaust tubing
• Factory-style hangers for mounting
• Installation hardware and instruction sheet

Ideal For

This exhaust system is ideal for Dodge Challenger owners who want to upgrade their factory exhaust for improved sound and performance without extensive modifications. It suits enthusiasts looking for a durable, high-quality axle-back solution that enhances the muscle car’s aggressive character while maintaining daily drivability and ease of installation.

Emissions Note

This product does not require a CARB Executive Order (EO) number and may not be legal for use in all states. Please check local regulations before installation.

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.