MagnaFlow Exhaust Muffler

2010–2025 Universal 2.5-inch Oval Straight-Through Performance Exhaust Muffler 11266

Part #: 11266

Overview

The MagnaFlow 4x18x9-inch Oval Straight-Through Performance Exhaust Muffler 11266 is designed to elevate your vehicle’s exhaust system with a combination of signature sound and proven performance. Crafted for automotive enthusiasts who seek a balance of aggressive tone, durability, and efficiency, this muffler is an excellent upgrade for a wide range of vehicles. Whether you're looking to improve your daily driver’s sound profile or support increased horsepower and torque, this muffler delivers a noticeable enhancement in exhaust flow and overall driving experience.

Constructed with high-quality materials and engineered for versatility, the MagnaFlow 11266 is suitable for those who want a deep, resonant exhaust note without excessive drone. Its universal design and flexible inlet/outlet configuration make it compatible with various applications, allowing you to customize your exhaust setup for optimal performance and sound. This muffler is ideal for street-driven vehicles, performance upgrades, or custom exhaust builds where sound and flow are priorities.

Key Features

The MagnaFlow 11266 features innovative design elements and premium materials that ensure long-lasting performance and a refined exhaust tone. Here are some of its key features:

• Constructed with a free-flowing straight-through perforated stainless steel core wrapped in stainless steel mesh and acoustic fiber fill, providing durability and excellent sound quality.
• Reversible, universal 2.5-inch inlet and outlet diameter layout allows flexible installation in various configurations and orientations.
• Oval shape measures 4 inches by 18 inches with a depth of 9 inches, optimizing space and performance in tight engine bays or custom exhaust setups.
• Engineered to improve exhaust flow compared to factory mufflers, supporting increased horsepower and torque while maintaining a refined sound profile.
• Stainless steel construction ensures resistance to corrosion and high temperatures, making it suitable for both daily driving and spirited performance applications.
• Signature MagnaFlow sound—deep, aggressive, yet refined—adding an unmistakable presence to your vehicle’s exhaust note.
• Designed for easy installation with minimal modifications required, compatible with a wide range of vehicle makes and models.

Construction & Design

The MagnaFlow 11266 muffler is built with a focus on durability and performance. Its stainless steel perforated core is engineered for optimal exhaust flow, reducing backpressure and enhancing engine efficiency. The core is wrapped in stainless steel mesh and acoustic fiber fill, which helps dampen unwanted noise while amplifying the deep, throaty exhaust tone MagnaFlow is known for. The oval shape not only provides a sleek aesthetic but also allows for versatile placement within your exhaust system.

The reversible inlet/outlet design offers installation flexibility, enabling you to orient the muffler in the most suitable direction for your vehicle’s layout. The high-quality TIG-welded construction ensures a robust, leak-free seal that withstands the rigors of daily driving and performance use. Overall, the design choices made in this muffler aim to maximize airflow, durability, and sound quality, making it a reliable upgrade for enthusiasts seeking a performance edge and an enhanced exhaust note.

Installation & Fitment

This universal muffler is designed for straightforward installation, often fitting directly into existing exhaust systems with minimal modifications. Its reversible inlet/outlet configuration provides flexibility, allowing you to adapt it to your vehicle’s specific layout. No cutting, drilling, or complex tuning is generally required, making it suitable for DIY enthusiasts and professional installers alike. For best results, ensure proper alignment and secure mounting to achieve optimal performance and sound characteristics.

• Reversible, universal 2.5-inch inlet and outlet diameter layout for flexible installation
• Simple bolt-on replacement for factory or aftermarket exhaust components
• No cutting, drilling, or tuning necessary in most applications

What's Included

• Complete performance exhaust muffler with stainless steel construction
• All necessary clamps and hardware for installation
• Instruction manual for proper fitment and setup

Ideal For

• Performance enthusiasts seeking a deep, aggressive exhaust tone
• Drivers looking to support increased horsepower and torque
• Custom exhaust builders and DIY installers
• Anyone wanting a durable, corrosion-resistant muffler with versatile installation options