MagnaFlow Exhaust Muffler

2011–2025 Universal Fit for Various Vehicles 2in. Offset/Center Straight-Through Performance Muffler

Part #: 11254

Overview

The MagnaFlow 4x18x9-inch Oval Straight-Through Performance Exhaust Muffler 11254 is designed to elevate your vehicle’s exhaust system with a combination of aggressive sound and proven performance gains. Crafted for automotive enthusiasts seeking a deep, resonant exhaust note and improved flow, this muffler is a versatile upgrade suitable for a wide range of vehicles. Whether you're looking to enhance your daily driver or add a sporty edge to your ride, this muffler delivers a balanced blend of sound, durability, and performance.

Engineered with precision, the MagnaFlow 11254 muffler helps support increased horsepower and torque by optimizing exhaust flow. Its free-flowing design reduces backpressure, allowing your engine to breathe more efficiently. The result is not only a more aggressive exhaust tone but also potential gains in overall engine responsiveness and efficiency. This muffler is ideal for drivers who want a noticeable upgrade in sound and performance without sacrificing reliability or daily drivability.

Key Features

The MagnaFlow 11254 muffler incorporates several advanced features that set it apart from standard aftermarket options:

• Constructed with a perforated stainless steel core wrapped in stainless steel mesh and acoustic fiber fill, ensuring durability and consistent sound quality over time.
• Universal 2-inch inlet and outlet diameters provide flexible installation options across various vehicle makes and models.
• Reversible design allows for versatile installation orientations, making it suitable for custom exhaust setups.
• Oval shape with dimensions of 4 inches by 18 inches and a 9-inch length, offering a sleek, performance-oriented appearance.
• High-quality stainless steel construction resists corrosion and withstands harsh driving conditions, ensuring long-lasting performance.
• Optimized straight-through layout promotes maximum exhaust flow, reducing backpressure and enhancing engine efficiency.
• Signature MagnaFlow sound—deep, aggressive, yet refined—perfect for enthusiasts who want their vehicle to stand out.
• Dyno-proven performance improvements, with many users reporting noticeable gains in horsepower and torque after installation.

Construction & Design

The MagnaFlow 11254 muffler features a robust stainless steel construction that guarantees longevity and resistance to rust and corrosion. Its oval shape is designed for optimal fitment and aesthetic appeal in various exhaust configurations. The straight-through perforated core is engineered for maximum flow efficiency, helping to reduce exhaust backpressure and improve overall engine response. Acoustic fiber fill dampens unwanted drone and noise, delivering a deep, throaty exhaust tone without excessive interior resonance. The reversible inlet/outlet design adds installation flexibility, accommodating different exhaust layouts and orientations.

Installation & Fitment

The MagnaFlow 11254 muffler is designed for straightforward bolt-on installation. Its universal 2-inch inlet and outlet diameters make it compatible with a wide range of vehicles, and the reversible design offers additional flexibility. No cutting, welding, or complex modifications are typically required, making it suitable for DIY enthusiasts and professional installers alike. Basic hand tools and a few hours are usually sufficient to complete the installation, which can be done with standard exhaust clamps and hardware included or readily available.

• Reversible, universal 2-inch inlet/outlet design for flexible installation
• No cutting, drilling, or tuning required for most applications
• Compatible with various vehicle makes and models with compatible exhaust configurations

What's Included

• MagnaFlow 4x18x9-inch Oval 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 support increased horsepower and torque
• Anyone upgrading their vehicle’s exhaust system for improved flow and sound
• DIYers and professional installers requiring a durable, versatile muffler