aFe MACH Force-Xp Cat-Back Exhaust System

2008–2012 Dodge Challenger 6.1L SRT8 / 6.4L 392

Part #: 49-42028

Overview

The aFe MACH Force-Xp Cat-Back Exhaust System is a precision-engineered upgrade designed specifically for the 2008 to 2012 Dodge Challenger equipped with the 6.1L SRT8 or 6.4L 392 V8 engines. This system enhances your muscle car’s performance by improving exhaust flow and delivering a powerful yet refined exhaust note that stays true to the Challenger’s iconic sound.

Ideal for enthusiasts seeking a direct bolt-on solution, the MACH Force-Xp offers noticeable horsepower and torque gains without compromising daily drivability or requiring complex modifications. It’s a perfect balance of aggressive performance and street-friendly refinement, making it a versatile upgrade for both spirited driving and everyday use.

Key Features

Combining advanced engineering with durable materials, the MACH Force-Xp Cat-Back Exhaust delivers measurable performance improvements and an aggressive sound profile. Key features include:

• Dyno-proven gains of up to +10 horsepower and +14 lb-ft of torque
• Mandrel-bent 3-inch stainless steel tubing for unrestricted exhaust flow
• Dual high-flow mufflers designed to absorb high-pitched tones and enhance sound quality
• Crossover balance tube that equalizes exhaust pulses, improving flow efficiency and reducing drone
• 100% MIG-welded construction for superior strength and leak-free performance
• Retention of factory exhaust tips for a seamless, OEM-style appearance
• Utilizes all factory hanger locations for hassle-free installation without modifications
• Includes polished stainless steel exhaust tips for a premium look

Construction & Design

The MACH Force-Xp exhaust system is crafted from premium 3-inch mandrel-bent 304-grade stainless steel tubing, ensuring smooth bends that maintain consistent diameter and maximize exhaust flow. This high-grade stainless steel offers excellent corrosion resistance and durability under extreme conditions, guaranteeing long-lasting performance.

All welds are completed using advanced MIG welding techniques, providing a strong, leak-free seal throughout the system. The inclusion of a crossover balance tube plays a critical role in balancing exhaust pulses between the two sides, enhancing scavenging efficiency and reducing unwanted drone for a more comfortable driving experience.

Performance & Sound

Engineered to unlock the full potential of the Dodge Challenger’s 6.1L and 6.4L V8 engines, the MACH Force-Xp Cat-Back Exhaust delivers dyno-verified gains of up to 10 horsepower and 14 lb-ft of torque. These improvements translate to enhanced acceleration and throttle response across the power band.

The dual high-flow mufflers produce a deep, aggressive exhaust tone that captures the essence of classic American muscle without harsh high-frequency noise. Thanks to the crossover balance tube, exhaust drone is minimized, making this system suitable for both spirited driving and daily commuting. The sound is powerful yet refined, enhancing the driving experience without becoming intrusive on longer trips.

Installation & Fitment

This cat-back exhaust system is designed for a direct bolt-on installation using all factory hanger locations, eliminating the need for cutting, welding, or additional modifications. It retains the factory exhaust tips, ensuring a clean, OEM-style appearance that complements the Challenger’s aggressive styling.

Installation can typically be completed with basic hand tools and does not require professional assistance, making it an accessible upgrade for enthusiasts and DIY mechanics alike. Fitment is specific to 2008–2012 Dodge Challenger models equipped with the 6.1L SRT8 or 6.4L 392 engines, ensuring a perfect fit and optimal performance.

What's Included

• 3-inch mandrel-bent stainless steel cat-back exhaust system
• Dual high-flow mufflers
• Crossover balance tube
• Two polished stainless steel exhaust tips
• OE-style flange and band clamps for leak-free sealing
• All necessary hardware for installation

Ideal For

The aFe MACH Force-Xp Cat-Back Exhaust is ideal for Dodge Challenger owners who want to enhance their vehicle’s performance and sound without compromising reliability or requiring extensive modifications. It suits muscle car enthusiasts seeking a powerful yet refined exhaust tone, daily drivers looking for improved throttle response, and weekend racers who demand measurable horsepower and torque gains.

Emissions Note

This product does not require a CARB Executive Order (EO#), making it compliant for use in states with strict emissions regulations where applicable.

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.