MagnaFlow Performance Exhaust Muffler

2011–2025 Universal Fit for Most Vehicles with 3-inch Offset/Offset Exhaust Systems

Part #: 13239

Overview

The MagnaFlow XL 4x9in. Oval Multi-Chamber Performance Exhaust Muffler is designed for automotive enthusiasts seeking a combination of powerful sound, reliable performance, and versatile installation options. Whether you're upgrading your daily driver, enhancing your vehicle's sound profile, or optimizing exhaust flow for better performance, this muffler delivers on all fronts. Its innovative design helps support increased horsepower and torque while providing that signature MagnaFlow tone that enthusiasts love.

Built with durability and performance in mind, this muffler is suitable for a wide range of vehicles with 3-inch offset/offset exhaust systems. Its lightweight construction ensures minimal added weight to your vehicle, while the multi-chamber design helps produce a deep, aggressive exhaust note without excessive drone. Perfect for street use, spirited driving, or even off-road adventures, this muffler is a reliable upgrade for those looking to improve their vehicle's exhaust sound and flow.

Key Features

MagnaFlow's XL 4x9in. Oval Multi-Chamber Performance Exhaust Muffler incorporates several advanced features to ensure optimal performance and durability:

• Constructed with a perforated stainless steel core featuring baffles and tuning gates, this muffler delivers a powerful, signature sound with a deep tone that enhances your vehicle's character.
• Its oval-shaped, 4x9x14-inch body provides a sleek, aggressive look while fitting a variety of vehicle configurations with ease.
• The weight-optimized design reduces overall vehicle weight, contributing to improved handling and efficiency.
• The universal 3/3-inch diameter inlet and outlet layout offers flexible installation options, accommodating many custom and off-the-shelf exhaust setups.
• Manufactured from high-quality stainless steel, this muffler ensures long-lasting resistance to corrosion and heat, maintaining performance over time.
• The straight-through, multi-chamber design helps improve exhaust flow compared to factory mufflers, supporting better throttle response and increased power output.
• Reversible design allows for versatile installation, making it suitable for various vehicle orientations and configurations.
• Dyno-proven performance gains support your vehicle's power upgrades, making this muffler a trusted choice among performance enthusiasts.
• Designed for easy bolt-on installation, it integrates seamlessly with existing exhaust systems without requiring extensive modifications.

Construction & Design

The MagnaFlow XL 4x9in. Oval Muffler features a robust construction that combines performance and durability. Its stainless steel perforated core is engineered for optimal sound tuning and flow efficiency, while the multi-chamber configuration helps produce a refined yet aggressive exhaust tone. The oval-shaped body not only enhances aesthetic appeal but also provides a compact footprint for versatile installation. The lightweight design minimizes additional stress on your vehicle's suspension and chassis, ensuring a balanced upgrade that maintains factory-like reliability.

Installation & Fitment

The MagnaFlow XL 4x9in. Oval Muffler is designed for straightforward bolt-on installation. Its universal 3/3-inch inlet and outlet diameters allow it to fit a wide range of vehicles with compatible exhaust systems. No cutting, drilling, or extensive modifications are required for most applications. The reversible design offers additional flexibility during installation, ensuring a proper fit regardless of your vehicle's exhaust layout. Basic hand tools and mechanical skills are sufficient to complete the upgrade, making it a popular choice for DIY enthusiasts and professional installers alike.

• Easy bolt-on installation with standard exhaust clamps and hardware included
• No cutting, drilling, or tuning required for most applications
• Compatible with a wide range of vehicles with 3-inch offset/offset exhaust systems

What's Included

• MagnaFlow XL 4x9in. Oval Multi-Chamber Performance Exhaust Muffler
• All necessary clamps and hardware for installation
• Installation instructions

Ideal For

• Performance enthusiasts seeking a deep, aggressive exhaust tone
• Drivers looking to improve exhaust flow and support increased horsepower and torque
• Vehicle owners wanting a durable, corrosion-resistant muffler upgrade
• DIYers and professional installers seeking a versatile, easy-to-install performance muffler