aFe MACH Force Cat-Back Exhaust System

Jeep Grand Cherokee 12-21 6.4L/6.2L

Part #: 49-38058

Overview

The aFe MACH Force Cat-Back Exhaust System without resonators is engineered specifically for Jeep Grand Cherokee models equipped with the powerful 6.4L SRT8 or 6.2L Trackhawk engines from 2012 through 2021. Designed for enthusiasts seeking enhanced performance and an aggressive exhaust note, this system delivers significant horsepower and torque gains while maintaining a refined sound profile. It is an ideal upgrade for drivers who want to unleash the full potential of their Jeep’s V8 HEMI engine without sacrificing factory aesthetics.

This cat-back exhaust system replaces the factory piping from the catalytic converters back, improving exhaust flow and reducing backpressure. It retains the factory exhaust tips for a seamless, stock appearance while providing a more commanding presence on the road.

Key Features

Built to maximize performance and sound quality, the aFe MACH Force Cat-Back Exhaust System offers the following key features:

• Up to +21 horsepower and +35 lb-ft of torque gains verified on a dyno
• Constructed from 3-inch mandrel-bent stainless steel tubing for unrestricted exhaust flow
• Includes dual high-flow mufflers designed to reduce high-pitched tones and exhaust drone
• Incorporates an X-pipe balance tube to evenly distribute exhaust pulses for improved efficiency
• 100% MIG-welded construction ensures strength and long-lasting durability
• Retains factory exhaust tips for a clean, OEM look
• Direct bolt-on installation with all necessary hardware included—no modifications required
• High-quality band clamps provide a leak-free 360-degree seal

Construction & Design

The MACH Force Cat-Back Exhaust is crafted from premium 304 stainless steel, known for its corrosion resistance and durability under extreme conditions. The 3-inch mandrel-bent tubing maintains consistent diameter throughout bends, preventing flow restrictions and optimizing exhaust scavenging. The system’s dual high-flow mufflers are engineered to balance sound and performance, absorbing unwanted high-frequency tones while delivering a deep, aggressive exhaust note.

All components are precision MIG-welded to ensure structural integrity and a leak-free seal. The integrated X-pipe balance tube equalizes exhaust pulses between both banks of the V8 engine, enhancing flow dynamics and reducing drone for a more enjoyable driving experience.

Performance & Sound

Designed to unleash the full potential of Jeep’s 6.4L and 6.2L HEMI engines, this cat-back exhaust system provides a verified increase of up to 21 horsepower and 35 lb-ft of torque. The improved exhaust flow reduces backpressure, allowing the engine to breathe more efficiently across the entire power band.

The dual free-flowing mufflers produce a powerful, aggressive tone that intensifies during acceleration and gear shifts, while the X-pipe balance tube minimizes exhaust drone during cruising. This results in a thrilling yet refined exhaust sound that enhances the driving experience without becoming intrusive.

Installation & Fitment

This aFe MACH Force Cat-Back Exhaust System is a direct bolt-on upgrade designed to fit 2012–2017 Jeep Grand Cherokee 6.4L SRT8 models, as well as 2018–2021 Jeep Grand Cherokee 6.2L Trackhawk and 6.4L SRT8 models. Installation requires no cutting, welding, or modifications, making it a straightforward upgrade for enthusiasts and professional installers alike.

The system retains the factory exhaust tips, preserving the vehicle’s original appearance. All necessary hardware and high-quality band clamps are included to ensure a secure, leak-free fitment.

What's Included

• 3-inch mandrel-bent stainless steel cat-back exhaust piping
• Dual high-flow mufflers
• X-pipe balance tube
• All necessary mounting hardware and clamps
• Installation instructions

Ideal For

This exhaust system is perfect for Jeep Grand Cherokee owners who want to enhance their vehicle’s performance and sound without compromising factory styling. It suits enthusiasts looking for a reliable, durable upgrade that delivers measurable horsepower and torque gains, aggressive exhaust tone, and reduced drone for daily driving comfort.

Emissions Note

This product does not require a CARB Executive Order (EO#) and is legal for sale in all 50 states.

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.