STEEDA 555-3612 Axle Exhaust Muffler 5.0

( Brand: Steeda ), ( Mounting Style: Clamp-on ), ( Items Included: Muffler, Tip ), ( Manufacturer Part Number: 555-3612 ), ( Material: Stainless Steel ), ( Placement On Vehicle: Rear ), ( Type: Axle Back Exhaust Kit ), ( Ref : Shp B ), ( Country/region Of Manufacture: United States ), ( Finish: Polished ), ( Performance Part: Yes )

Review STEEDA 5.0 Axle Exhaust Mufflers Tips fits MUSTANG QUAD S550 GT 2015–2023

The Steeda 555-3612 15-23 Mustang GT S550 5.0 Axle-Back Exhaust Mufflers Quad is a high-performance exhaust system component designed specifically for the 5.0L Mustang GT S550 models from 2015 to 2023. This system is manufactured by Steeda Autosports, a renowned name in the automotive aftermarket industry, known for its commitment to manufacturing top-quality performance parts.

This axle-back exhaust system features quad mufflers, which provide a unique and aggressive exhaust note while maintaining a reasonable level of noise for daily driving. The mufflers are designed to maximize exhaust flow, allowing for improved engine performance and increased horsepower and torque. The system is constructed using premium 304 stainless steel, ensuring durability and resistance to corrosion.

One of the most notable features of this exhaust system is the quad muffler design, which offers a significant improvement in backpressure reduction when compared to the factory exhaust system. This reduction in backpressure allows the engine to breathe more freely, resulting in better power output and a more responsive driving experience.

The Steeda 555-3612 Axle-Back Exhaust Mufflers Quad also features a polished finish, giving the exhaust system a stylish and premium look. This finish not only looks great but also helps to protect the exhaust from the elements, ensuring it maintains its appearance for years to come.

Installation of this exhaust system is relatively straightforward, with most users able to complete the installation process in a few hours using common hand tools. Steeda provides detailed installation instructions to make the process as easy as possible for the end-user. Additionally, the system is designed to be a direct replacement for the factory exhaust system, meaning no modifications are required to install it.

Overall, the Steeda 555-3612 15-23 Mustang GT S550 5.0 Axle-Back Exhaust Mufflers Quad is an excellent choice for Mustang GT S550 owners looking to improve their vehicle's performance and add a unique and aggressive exhaust note. With its high-quality construction, easy installation, and significant power gains, this exhaust system is a must-have for any serious Mustang enthusiast.

Steeda 555-3612 15-23 Mustang GT S550 5.0 Axle-Back Exhaust Mufflers Quad: Pros, Cons, and Conclusion

The Steeda 555-3612 axle-back exhaust mufflers quad system is a popular choice among Mustang GT S550 5.0 owners who seek improved performance and an enhanced exhaust note. In this analysis, we will discuss the key advantages and disadvantages of investing in this aftermarket exhaust system.

1. Increased Power: The Steeda quad exhaust system is designed to maximize power and torque output. The exhaust gases exit more efficiently, allowing the engine to breathe better and produce more horsepower and torque.

2. Improved Exhaust Note: The quad exhaust system provides a more aggressive and throaty exhaust note. This is due to the larger diameter pipes and the increased flow of exhaust gases. The sound is not only louder but also more pleasing to the ear.

3. Enhanced Engine Performance: The improved exhaust flow leads to better engine performance overall. The engine responds more quickly and delivers smoother power delivery.

4. Better Fuel Efficiency: Although it may seem counterintuitive, some users report improved fuel efficiency with the Steeda quad exhaust system. The more efficient exhaust system allows the engine to burn fuel more effectively, resulting in better mileage.

5. Durability: The Steeda exhaust system is made of high-quality materials, ensuring durability and longevity. The system is engineered to withstand the rigors of high-performance driving, making it a worthwhile investment for those who demand reliability.

1. Cost: The Steeda quad exhaust system is a premium aftermarket exhaust option, and the cost reflects its high-performance capabilities. The system can be quite expensive compared to stock or off-the-shelf exhaust systems.

2. Loudness: The exhaust system is designed to provide a more aggressive exhaust note, which can be quite loud. This may not be ideal for those who prefer a more subtle exhaust sound or who live in noise-sensitive areas.

3. Installation Complexity: Installing the Steeda quad exhaust system can be a complex process, requiring professional installation or extensive DIY skills. The system involves multiple components, and proper installation is crucial to ensure optimal performance and durability.

The Steeda 555-3612 axle-back exhaust mufflers quad system offers significant performance improvements for Mustang GT S550 5.0 owners. With increased power, improved exhaust note, enhanced engine performance, better fuel efficiency, and durability, this aftermarket exhaust system is a worthwhile investment for those seeking a high-performance driving experience. However, its cost, complexity, and loudness may deter some potential buyers. Ultimately, the decision to purchase the Steeda quad exhaust system depends on individual priorities and preferences. For those who value performance, durability, and a more aggressive exhaust note, this system is an excellent choice.

part # 5553612 prices

• $149.99-$798.80

specifications frazzlekits:

• for models: S550, Gt, Mustang, Quad
• for years: 2015-2023
• brand: Steeda
• mounting style: Clamp-on
• items included: Muffler, Tip
• manufacturer part number: 555-3612
• material: Stainless Steel
• placement on vehicle: Rear
• type: Axle Back Exhaust Kit
• ref : Shp B
• country/region of manufacture: United States
• finish: Polished
• performance part: Yes

returns frazzlekits:

• policy: No Returns

payments frazzlekits:

• wallet: Apple-pay
• credit card: Visa
• other

offer frazzlekits:

• quantity: 1
• started: August 25, 2025
• sold: 0
• options: Ship-to-home
• availability: In Stock

shipping frazzlekits:

• transit: 3-8 Days
• class: Standard
• service: Standard
• type: Fixed
• cost: $49.95

general frazzlekits:

• condition: Used
• Car Truck Parts Accessories > Exhaust Emission Systems > Exhaust System Kits

seller frazzlekits:

• # reviews: 534
• rating: 100.0%

Steeda 555-3612 Is Similar To:

• Steeda Autosports Sda-55-3619 H-pipe Exhaust With Clamps Sda-555-3619 For 2015-25 S550 S650 Mustang Gt (32.1% similar) $715.91. (September 19th, 2025)