2015–2021 WRX Exhaust Systems: Improve Performance and Sound

Elevate your 2015–2021 Subaru WRX with MRT Performance’s handcrafted exhaust systems—designed to free up power, enhance throttle response, and bring out that deep, motorsport-ready exhaust note. Whether you're hitting the track or showing up at meets, MRT offers cat‑back, turbo-back, and down‑pipe upgrades with unrivaled build quality and fitment.

2015-2021 WRX Exhaust FAQs

1. What exhaust systems does MRT offer for the 2015–2021 Subaru WRX?

MRT offers full Turbo-Back systems, cat-back systems, a Street Race J-Pipe (mid/down-pipe), and a Sport Touring Intermediate Pipe. Each is tailored for different sound levels and performance goals, from aggressive track builds to refined daily drivers.

2. Will the MRT Turbo-Back exhaust trigger a check engine light on my WRX?

Because the MRT Turbo-Back and J-Pipe systems are catless, there is a high chance they may trigger a check engine light. A proper ECU tune is recommended when installing these systems to optimize performance and prevent CEL issues.

3. Does the MRT exhaust system fit both WRX and WRX STI models?

Yes! MRT has exhausts designed for both WRX and WRX STI engines. Just check that the exhaust you are getting states WRX STI when purchasing.

4. Can I install the MRT WRX exhaust system myself at home?

Yes, all MRT exhaust components are designed for bolt-on installation with basic hand tools. Most systems take 60–90 minutes to install and do not require welding, making them ideal for DIY installation.

5. What material is used in MRT WRX exhaust systems?

All MRT exhaust components are made from premium T304 stainless steel. This ensures long-term durability, corrosion resistance, and high performance—ideal for all climates and driving conditions.

2015–2021 WRX Exhaust Systems: Improve Performance and Sound

Turbo-Back Performance Exhaust (No Cats)

The flagship Street Race Turbo‑Back system is a complete overhaul, replacing restrictive factory components with straight-through 3″ mandrel‑bent tubing and quad 4″ tips—all crafted from T304 stainless steel. Rated 90/10 for performance, it delivers raw horsepower gains, fuel economy improvement, and a rich, muscular soundtrack. It’s the choice for serious tuning setups or pure visceral sound, on your WRX or WRX STI.

Version 1 J‑Pipe (No Cats, Mid‑Pipe Only)

For racers seeking turbo spool enhancement and lighter exhaust tone, MRT's Street Race J‑Pipe swaps the factory mid/down‑pipe to open up flow and bolster response. The aggressive “muscle-car” tone and boosted turbo voice will make your WRX stand out on the strip or canyon roads.

Sport Touring Intermediate Pipe

Prefer daily-drivable refinement? MRT’s Sport Touring mid-pipe delivers an enhanced exhaust note with minimal drone, crafted from 2.5″ T304 tubing and designed for smooth performance improvement. It adds a distinct tone and throttle snap while retaining civility.

Precision Fitment & Ease of Installation

All systems are engineered specifically for the 2015–2021 VA WRX platform. They’re DIY-friendly (60–90 min install with basic tools), bolt‑on only (no welding), and carry a limited lifetime warranty.

Craftsmanship Meets Endurance

Hand-built in the USA, MRT exhausts are designed with mandrel-bent tubing and finished with polished or “Black Ops” tips. The corrosion-resistant T304 stainless and meticulous welds ensure your WRX sounds and looks aggressive for the long haul.

Choose the right MRT exhaust for your style—whether it's full-throttle performance, turbo response, or balanced daily tone. Elevate power, sound, and attitude with MRT's VA‑WRX exhaust legacy.

Why Choose MRT?

MRT combines expert craftsmanship with high-performance engineering to elevate your 2015–2021 WRX’s exhaust experience. Each system is hand-built in the USA using premium T304 stainless steel, ensuring lasting durability and resistance to corrosion, perfect for both daily drivers and spirited track enthusiasts. MRT’s precision 5-axis CNC porting and mandrel-bent tubing maximize exhaust flow for improved power and throttle response. Whether you opt for the full Turbo-Back overhaul or the Street Race J-Pipe, MRT exhausts deliver aggressive, race-inspired sound without compromising drivability. With bolt-on installation, no cutting or tuning required, and a limited lifetime warranty, MRT offers a perfect blend of performance, reliability, and ease—making it the top choice for WRX owners looking to stand out on the street or track.