aFe MACH Force Cat-Back Exhaust System

Jeep Grand Cherokee 12-21 6.4L/6.2L

Part #: 49-38059

Overview

The aFe MACH Force Cat-Back Exhaust System with resonators is engineered specifically for Jeep Grand Cherokee models equipped with the powerful 6.4L SRT8 and 6.2L Trackhawk engines from 2012 to 2021. Designed to enhance both performance and sound, this exhaust system delivers noticeable horsepower and torque gains while maintaining a refined, aggressive tone. Ideal for enthusiasts seeking improved throttle response and a more commanding exhaust note without sacrificing drivability or factory aesthetics.

This direct bolt-on system retains your factory exhaust tips and requires no modifications, making it a straightforward upgrade for Jeep owners looking to maximize their vehicle’s potential with a high-quality, durable exhaust solution.

Key Features

The aFe MACH Force Cat-Back Exhaust System combines advanced engineering with premium materials to deliver superior performance and sound quality. Key features include:

• Constructed from 3-inch mandrel-bent 304 stainless steel tubing for unrestricted exhaust flow and long-lasting corrosion resistance
• Dual high-flow mufflers designed to improve exhaust scavenging and enhance power across the entire RPM range
• Welded-on resonators integrated into the X-pipe to eliminate unwanted resonance and reduce drone at specific RPMs
• X-pipe configuration balances and evenly distributes exhaust pulses for improved efficiency and smoother power delivery
• 100% MIG-welded construction ensures maximum strength and durability under demanding conditions
• Retains factory exhaust tips for a clean, OEM appearance
• Includes all necessary hardware for a hassle-free, direct bolt-on installation
• High-quality band clamps provide a leak-free 360-degree sealing surface

Construction & Design

The MACH Force Cat-Back Exhaust System is crafted from premium 304 stainless steel, known for its excellent corrosion resistance and durability. The 3-inch mandrel-bent tubing maintains consistent diameter throughout bends, ensuring smooth exhaust flow without restrictions. The system’s robust MIG welds guarantee structural integrity and longevity, even under high-performance driving conditions.

The inclusion of an X-pipe with integrated resonators is a key design element that balances exhaust pulses between the banks of the V8 engine. This design not only improves exhaust flow efficiency but also reduces unwanted noise and drone, resulting in a more refined driving experience without compromising the aggressive exhaust tone.

Performance & Sound

With this cat-back exhaust, Jeep Grand Cherokee owners can expect a measurable increase in performance, including up to +21 horsepower and +35 lb-ft of torque at peak gains. The dual high-flow mufflers deliver a deep, aggressive exhaust note that intensifies during acceleration and gear shifts, enhancing the driving experience without excessive cabin drone.

The resonators welded onto the X-pipe specifically target and eliminate harsh resonance frequencies, providing a balanced and enjoyable sound profile suitable for both spirited driving and daily use.

Installation & Fitment

This aFe exhaust system is designed as a direct bolt-on replacement for the factory cat-back exhaust on 2012–2017 Jeep Grand Cherokee 6.4L SRT8 and 2018–2021 Jeep Grand Cherokee 6.2L Trackhawk models. Installation requires no cutting, welding, or modifications, making it accessible for professional installers and experienced enthusiasts alike. The system includes all necessary hardware and clamps to ensure a secure, leak-free fitment.

What's Included

• 3-inch mandrel-bent stainless steel cat-back exhaust tubing
• Dual high-flow mufflers
• Welded-on resonators integrated into the X-pipe
• X-pipe assembly
• Factory exhaust tip adapters to retain OEM appearance
• All required mounting hardware and high-quality band clamps

Ideal For

This exhaust system is perfect for Jeep Grand Cherokee SRT8 and Trackhawk owners who want to unlock additional horsepower and torque while enhancing their vehicle’s exhaust sound. It suits enthusiasts seeking a durable, high-performance exhaust upgrade that maintains factory aesthetics and offers a straightforward installation process. Whether for street driving or spirited weekend runs, the aFe MACH Force Cat-Back Exhaust delivers a balanced combination of power, sound, and quality.

Emissions Note

This product does not require a CARB Executive Order (EO#) and is designed to meet emissions requirements without compromising performance.

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.