MagnaFlow Competition Series Cat-Back System - 2015-2021 Subaru WRX / STI
MagnaFlow Competition Series Cat-Back System - 2015-2021 Subaru WRX / STI
MagnaFlow
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Every product is sourced from authorized manufacturers or distributors. If something isn’t right with fitment or condition, we’ll work with you to resolve it fairly.
NO GUESSWORK,
JUST PARTS THAT WORK.
Let’s finish that car.
PRODUCT DETAILS ▾
RallySport Direct proudly offers you a great selection of quality performance exhaust systems brought to you by Magna Flow.
This is the Magna Flow Competition Series Cat-Back Exhaust System. The Competition Series has been designed for those who want to increase the performance while gaining a more aggressive exhaust note.
DETAILS:
- Smooth mandrel bends to limit turbulence and restriction under acceleration
- 409 Stainless steel construction
- Polished quad exhaust tips
- 3" piping diameter
- Improved horsepower and torque
- Improved throttle response
- Aggressive sound
- Reduced turbo lag
- Saves weight in comparison to the OEM exhaust
- Includes new clamps for the installation
WHY WE CARRY THIS ▾
We only list parts we’d run ourselves or recommend to a friend building a real car. If it feels vague, unverified, or inconsistent, it doesn’t make the cut.
- Fitment-first mindset — no “universal” roulette
- Brand reputation matters — we favor proven manufacturing
- Support that actually responds with real answers
WHAT TO EXPECT ▾
This is the clean path: correct fitment, clean install, and results that match the intent.
- Install-ready experience with correct mounting where provided
- Finish that holds up to real driving, not just photos
- Selections on this page drive the exact fitment shipped
TRUST, BUILT INTO THE PROCESS.
Anyone can list parts. We curate what belongs on a serious build. Our goal is simple: fewer surprises, cleaner installs, and confidence when you hit “Buy.”
Fitment checked
We prioritize vehicle-specific listings and clear selection logic so you’re not gambling on compatibility.
Brand discipline
Proven manufacturing and consistent quality matter more than hype. We bias toward what actually holds up.
Real support
If you have a question, you’ll get a human answer that helps you finish the build — not a copy-paste shrug.
RallySport Direct proudly offers you a great selection of quality performance exhaust systems brought to you by Magna Flow.
This is the Magna Flow Competition Series Cat-Back Exhaust System. The Competition Series has been designed for those who want to increase the performance while gaining a more aggressive exhaust note.
DETAILS:
- Smooth mandrel bends to limit turbulence and restriction under acceleration
- 409 Stainless steel construction
- Polished quad exhaust tips
- 3" piping diameter
- Improved horsepower and torque
- Improved throttle response
- Aggressive sound
- Reduced turbo lag
- Saves weight in comparison to the OEM exhaust
- Includes new clamps for the installation
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