MagnaFlow Exhaust Muffler

2011–2025 Universal Fitment / Performance Exhaust System

Part #: 11245

Overview

The MagnaFlow 4x18x9-inch Oval Straight-Through Performance Exhaust Muffler 11245 is designed to elevate your vehicle's exhaust system with a perfect blend of aggressive sound and proven performance. Crafted for enthusiasts who seek a deep, resonant exhaust note combined with enhanced airflow, this muffler is suitable for a wide range of vehicles and applications. Whether you're looking to improve your daily driver’s sound profile or support increased horsepower and torque, this muffler offers a versatile solution that complements your vehicle's performance upgrades.

Built with durability and efficiency in mind, the MagnaFlow muffler helps you achieve a more aggressive exhaust tone while maintaining a smooth, free-flowing path for exhaust gases. Its universal design and reversible inlet/outlet configuration make installation flexible and straightforward, fitting various setups and orientations. If you're aiming for a balanced combination of sound, style, and performance, this muffler is an excellent choice for your automotive upgrade.

Key Features

The MagnaFlow 11245 features several innovative design elements that set it apart from standard mufflers:

• Constructed with a perforated stainless steel core wrapped in stainless steel mesh and acoustic fiber fill, ensuring durability and optimal sound quality.
• Reversible, universal 2.25-inch inlet and outlet diameter layout allows flexible installation in various vehicle configurations.
• Free-flowing straight-through design promotes improved exhaust flow, helping support increased horsepower and torque.
• Engineered to produce a signature MagnaFlow exhaust sound—deep, aggressive, yet refined—enhancing your vehicle's auditory presence.
• Manufactured from high-quality stainless steel, providing corrosion resistance and long-lasting performance under demanding driving conditions.
• Designed for easy installation with minimal modifications required, making it suitable for DIY enthusiasts and professional installers alike.
• Compatible with a wide range of vehicles, thanks to its universal fitment and adaptable inlet/outlet configuration.

Construction & Design

The MagnaFlow 11245 muffler is built with premium materials to ensure longevity and consistent performance. Its stainless steel construction resists rust and corrosion, even in harsh environments. The oval shape and straight-through perforated core are engineered for maximum flow efficiency, reducing backpressure and supporting engine performance. Acoustic fiber fill enhances sound quality by absorbing unwanted vibrations and noise, resulting in a deep, resonant exhaust tone that enhances your vehicle's character. The reversible design allows for versatile installation options, accommodating various exhaust layouts and orientations.

Installation & Fitment

The MagnaFlow 11245 muffler features a universal, reversible design with 2.25-inch inlet and outlet diameters, making it compatible with a broad range of vehicles and exhaust configurations. Its straightforward bolt-on installation process requires minimal modifications, and no cutting or welding is typically necessary. The muffler's flexible orientation allows you to customize the fitment to your specific setup, ensuring a secure and leak-free connection. For optimal results, professional installation is recommended, especially if integrating with existing exhaust systems.

• Reversible, universal 2.25-inch inlet/outlet configuration for flexible installation
• No cutting, drilling, or special tuning required in most applications
• Designed for easy bolt-on installation with standard tools

What's Included

• MagnaFlow 4x18x9-inch Oval Performance Exhaust Muffler
• Clamps and mounting hardware
• Installation instructions

Ideal For

• Performance enthusiasts seeking a deep, aggressive exhaust sound
• Drivers looking to support increased horsepower and torque
• DIYers and professional installers requiring a versatile, durable muffler
• Anyone wanting to upgrade their vehicle's exhaust system for improved sound and performance