Best Exhaust Systems for Subaru WRX to Boost Performance and Sound
Upgrading the exhaust on your Subaru WRX can significantly enhance both performance and sound quality. Whether you are looking for improved horsepower, a deeper exhaust note, or a polished look, the right exhaust system can make a noticeable difference. Below is a comparison of some of the top exhaust options currently available, focusing on compatibility, materials, design, and features.
| Product | Brand | Compatibility | Material | Key Features |
|---|---|---|---|---|
| Replacement Muffler Axle Back 4″ Quad Tips | Extreme Online Store | 2015-2021 WRX & STi | Stainless Steel | Double Wall, Blue Burnt Quad Tips, Full Installation Kit |
| Polished Stainless Axle Back Exhaust | Generic | 2015-2021 WRX & STi | Stainless Steel | 4″ Double Walled Tips, 2.50″ OD Piping |
| Invidia HS15STIGM4ST Exhaust System | Invidia | 2015+ WRX & STi | Stainless Steel | 4″ Bell Mount, Power Increase, Titanium Tip Options |
| DNA Motoring Cat Back Exhaust System | DNA MOTORING | 2015-2017 WRX & STi | T-304 Stainless Steel | Mandrel-Bent, Dyno Proven, Aggressive Sound |
| Spec-D Tuning 4″ Stainless Catback Exhaust | SPEC-D TUNING | 2008-2014 WRX & STi | Stainless Steel | Easy Installation, Dual Tip System |
Replacement Muffler Axle Back With Blue Burnt Quad Tips
This exhaust system by Extreme Online Store is designed specifically for all 2015-2021 Subaru WRX and WRX STi models. It features 4″ double wall stainless steel crushed quad tips and includes a full installation package with hangers, gaskets, nuts, and bolts. The blue burnt tip finish adds a stylish custom look. It is important to note that this product does not fit vehicles with aftermarket exhaust systems or SPT mid pipes. Its durable stainless steel construction ensures longevity and resistance to corrosion.
Generic Polished Stainless Axle Back Muffler Exhaust
Generic offers a polished stainless steel axle back muffler exhaust suitable for 2015-2021 Subaru WRX and STi models. This system features 4.0″ outer diameter double walled tips with 2.50″ piping diameter. The sturdy stainless steel construction provides durability and retains the polished look over time. Its clean design enhances both performance and appearance without requiring complex installation modifications.
Invidia HS15STIGM4ST Cat-Back Exhaust System
The Invidia HS15STIGM4ST exhaust system is built for Subaru WRX/STi 2015 and newer models. It uses a large 4-inch stainless steel bell mount that helps free excess exhaust gas, enhancing horsepower gains as demonstrated by dyno testing. The system features single layer quad titanium tips offering a striking aesthetic and improved durability. It is well suited for enthusiasts seeking measurable power improvements and a distinctive sound.
DNA MOTORING Cat Back Exhaust System
This DNA MOTORING cat back exhaust fits 2015-2017 Subaru WRX & STi models. It is engineered from high quality T-304 stainless steel with computerized mandrel bends to maximize strength and smooth exhaust gas flow. Dyno testing confirms this exhaust increases horsepower by 15 to 25 units and delivers an aggressive yet smooth tone. The system efficiently enhances engine output, making it a balance of performance and sound quality.
Spec-D Tuning 4″ Stainless Catback Dual Tip Exhaust
Spec-D Tuning provides a polished 4″ dual tip catback exhaust compatible with 2008-2014 WRX and STi sedan models. This system emphasizes easy installation with minimal to no modifications required. Its stainless steel construction offers durability while the dual tip configuration ensures a sporty exhaust note. This exhaust fits older WRX models, giving drivers an upgrade that enhances both aesthetic appeal and sound performance.
Buying Guide for Subaru WRX Exhaust Systems
When selecting the best exhaust system for a Subaru WRX, a variety of factors should be considered to ensure the chosen product meets your performance needs and fits your vehicle.
Compatibility
Ensure the exhaust system matches your Subaru WRX’s model year and trim (WRX or STi). Check if the exhaust fits stock or modified vehicles, as some exhausts are not compatible with aftermarket mid pipes or catalytic converters.
Material and Durability
Stainless steel, particularly T-304 grade, is preferred for its rust resistance and long lifespan. Some systems feature titanium tips for added corrosion resistance and lighter weight, useful for racing applications.
Performance Gains
Look for exhausts that are dyno-proven to increase horsepower and torque. Larger diameter piping and well-designed bends help improve airflow, reducing backpressure for better engine efficiency.
Sound Profile
Consider the exhaust tone you desire, whether aggressive, deep, or mild. Double wall tips and muffler designs influence sound characteristics, so listen to customer sound clips if available.
Installation Ease
Some exhaust systems are designed for bolt-on installation with included hardware and gaskets. Others may require cutting, welding, or additional modifications, which could increase installation complexity.
Visual Appeal
Polished, burnt blue, or titanium quad tips add visual flare. Consider the aesthetic complement to your WRX’s exterior when choosing tip styles and finishes.
Assessing these perspectives collaboratively ensures the selected exhaust system enhances your Subaru WRX’s performance, sound, and look while fitting your budget and installation capabilities.