Finding the right exhaust upgrade for a Subaru WRX can improve airflow, reduce backpressure, and enhance sound and efficiency. The selections below cover axle-back, cat-back, and performance manifolds to suit different goals—from increased horsepower to a deeper tone. All options are compatible with common WRX models and are sourced from reputable brands and sellers.
Summary of Selected Products
| Product | Brand | Amazon Link |
|---|---|---|
| Replacement For 2015-2021 Subaru WRX STi Stainless Steel Quad Burnt Tips Axle Back Exhaust | Extreme Online Store | View |
| Replacement For 2015-2021 Subaru WRX STi Stainless Steel Quad Burnt Tips Axle Back Exhaust | Extreme Online Store | View |
| BORLA 140595 Cat-Back Performance Exhaust System | Borla | View |
| DNA MOTORING CBE-WRX15-S Cat Back Exhaust System | DNA MOTORING | View |
| Borla 2022 WRX 2.4L Turbo Catback Exhaust Polished Tips | Borla | View |
Exhaust Oxide Quad Burnt Tips Axle Back (WRX/WRX STI)
The Extreme Online Store axle-back exhaust fits all 2015-2021 Subaru WRX and WRX STI models, excluding aftermarket mid-pipe configurations. It comes brand-new with left and right muffler assemblies, two hangers, gaskets, and nuts and bolts for secure installation. The double-wall quad burnt tips provide a distinctive finish. This setup focuses on a bolt-on solution without mid-pipe changes, offering a performance-oriented upgrade with a notable sound enhancement for daily driving and track use alike.
Exhaust System For WRX/STi Quad Burnt Tips (Second Variant)
This second Extreme Online Store listing mirrors the same high-quality stainless steel axle-back design with quad burnt tips. It includes a complete set of hardware and gaskets for a straightforward installation on 2015-2021 WRX/STI models. It is presented as a brand-new, unused item in original packaging, designed to deliver improved exhaust flow and an enhanced exhaust note while maintaining durability and corrosion resistance.
BORLA 140595 Cat-Back Performance Exhaust
Borla’s 140595 cat-back system for 2015-2021 Subaru Impreza WRX and WRX STI uses T-304 stainless steel and all-welded construction. The bolt-on installation emphasizes durability and corrosion resistance, aiming to improve exhaust flow and sound without sacrificing reliability. This solution typically benefits overall engine breathing, helping to reduce backpressure and accompany a more aggressive street tone and potential performance gains when paired with other tuning components.
DNA MOTORING CBE-WRX15-S Cat Back Exhaust
This DNA MOTORING cat-back is designed for 2015-2017 Subaru WRX and STI models. It features high-quality T-304 stainless steel with mandrel bends for strength and durability. Dyno tests indicate increased horsepower and torque, especially in the low-to-mid range, with a deeper, more aggressive exhaust note. The system emphasizes smoother exhaust flow and potential efficiency improvements by reducing restrictions in the piping path.
Borla 2022 WRX 2.4L Turbo Catback Exhaust
Borla’s 2022 WRX cat-back system is designed for the 2.4L turbo engine, offering a polished finish with polished tips. The exhaust is built from high-quality materials and aims to improve flow and performance while providing a refined, sporty tone. It fits seamlessly with the 2022 WRX platform and is designed for straightforward bolt-on installation with durability in mind.
Buying Guide: Key Considerations For WRX Exhaust Upgrades
- Fitment And Compatibility: Ensure the exhaust is designed for your WRX generation (model year, engine, and drivetrain). Some listings specify WRX STI compatibility or exclude aftermarket mid-pipes.
- Material Quality: Look for T-304 stainless steel or equivalent for corrosion resistance and longevity. All-welded constructions typically offer durability over factory assemblies.
- Installation Type: Axle-back vs cat-back, bolt-on vs weld-in. Axle-back is generally easier and less invasive, while cat-back can improve flow and sound more significantly.
- Tone And Sound: Consider whether you want a louder, more aggressive note or a balanced, refined tone for daily driving. Manufacturer descriptions and customer reviews can help gauge tone.
- Performance Benefits: Many systems advertise horsepower and torque gains, though real-world results vary with engine condition and other modifications. Pairing with intake and tune may optimize gains.
- Warranty And Support: Check warranty terms and return policies. Reputable brands typically provide installation support and documentation.
- Aesthetics: Finishing tips (e.g., burnt quad tips, polished tips) influence appearance and may affect your decision beyond performance.
- Emissions And Compliance: Ensure the exhaust complies with local regulations and vehicle inspection requirements in your area.
- Budget And Value: Weigh the cost against expected gains. A higher-end cat-back may offer meaningful improvements over an axle-back, depending on your goals.
Other considerations include compatibility with existing aftermarket components, such as mid-pipes or headers. If you plan substantial engine work, coordinate exhaust upgrades with intake modifications and tuning to maximize efficiency and performance. Always follow install instructions and, if unsure, seek professional installation.