aFe ROCK BASHER Cat-Back Exhaust System

2018–2025 Jeep Wrangler 3.6L V6 4-Door

Part #: 49-48068

Overview

The aFe ROCK BASHER Cat-Back Exhaust System is engineered specifically for the 2018 through 2025 Jeep Wrangler JL equipped with the 3.6L V6 engine, designed exclusively for 4-door models. This high-performance exhaust upgrade delivers noticeable gains in horsepower and torque while providing a robust, aggressive exhaust tone that enhances your Wrangler’s off-road presence. Ideal for Jeep enthusiasts seeking improved engine breathing, durability, and a distinctive sound without compromising factory fitment or reliability.

Built to withstand the rigors of off-road adventures, the ROCK BASHER system features a unique pre-axle turn down tip that protects the exhaust from damage caused by rough terrain and obstacles, ensuring your investment stays intact during intense trail rides.

Key Features

Designed with precision and performance in mind, the ROCK BASHER Cat-Back Exhaust offers the following standout features:

• Up to +9 horsepower and +8 lb-ft torque gains, verified by in-house dyno testing
• 3-inch mandrel-bent tubing crafted from durable 409 stainless steel for optimal exhaust flow
• Free-flowing stainless steel muffler engineered to produce a powerful, aggressive tone while reducing high-pitched drone
• 100% hand MIG-welded construction for superior strength and long-lasting durability
• Unique pre-axle turn down tip positioned before the rear axle to prevent tip damage during off-road use
• Factory-style bayonet hangers maintain stable pipe positioning under high vibration and heat conditions
• Includes premium stainless steel band clamps and hardware for a secure, leak-free installation
• Utilizes all factory mounting points for a hassle-free, bolt-on installation with no modifications required

Construction & Design

The ROCK BASHER exhaust system is meticulously crafted from 409 stainless steel tubing, chosen for its excellent corrosion resistance and strength in demanding environments. The 3-inch mandrel bends ensure smooth, unrestricted exhaust flow, minimizing backpressure and maximizing engine efficiency. Each component is hand MIG-welded by skilled technicians, guaranteeing robust welds that withstand the stresses of off-road driving and high-temperature operation.

The system’s design incorporates factory-style bayonet hangers that secure the exhaust firmly in place, preventing movement and rattling even under extreme vibration. The innovative pre-axle turn down tip is strategically located to avoid common off-road hazards, protecting the exhaust tip from being crushed or lost on rough trails.

Performance & Sound

The aFe ROCK BASHER Cat-Back Exhaust significantly enhances your Jeep Wrangler’s performance by improving exhaust scavenging and reducing restrictions. This results in measurable horsepower and torque gains, verified through rigorous dyno testing. The free-flowing muffler design delivers a deep, aggressive exhaust note that amplifies the Wrangler’s muscular character without excessive drone, providing an exhilarating driving experience both on and off the road.

Installation & Fitment

Installation is straightforward and designed to be completed with basic hand tools. The system bolts directly onto all factory mounting points using the included stainless steel band clamps and hardware, ensuring a tight 360-degree seal and eliminating the need for cutting or welding. The factory-style bayonet hangers simplify alignment and maintain a secure fit, even under high heat and vibration conditions.

Please note this exhaust system is compatible only with 4-door Jeep Wrangler JL models equipped with the 3.6L V6 engine from model years 2018 through 2025.

What's Included

• 3" Mandrel-bent 409 stainless steel tubing components
• Free-flowing stainless steel muffler
• Unique pre-axle turn down exhaust tip
• Stainless steel band clamps and installation hardware
• Factory-style bayonet hangers with bushings
• Detailed installation instructions

Ideal For

The aFe ROCK BASHER Cat-Back Exhaust is perfect for Jeep Wrangler owners who demand enhanced performance and a commanding exhaust sound without sacrificing durability or factory fitment. It is especially suited for off-road enthusiasts who require a rugged exhaust system capable of handling rough terrain and trail obstacles while delivering reliable power gains and a bold tone.

Emissions Note

This product does not require a CARB Executive Order (EO) number and is compliant with emissions regulations applicable to its fitment. All aFe exhaust systems are engineered and manufactured in the USA at the Corona, California facility, ensuring quality and regulatory adherence.

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.