GrimmSpeed Catback Exhaust System Non-Resonated - 2011-2021 Subaru WRX / STI Sedan
GrimmSpeed Catback Exhaust System Non-Resonated - 2011-2021 Subaru WRX / STI Sedan
GrimmSpeed
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PRODUCT DETAILS ▾
RallySport Direct proudly carries a great selection of quality aftermarket performance products brought to you by GrimmSpeed.
This is the GrimmSpeed Cat-Back Exhaust System. GrimmSpeed has combined premium materials, along with a larger piping diameter and smooth bends to provide the performance enthusiast with a satisfying result in terms of both power and sound. This exhaust system has been specifically designed to fit sedan models and will come with new gaskets, hardware, and GrimmSpeed's exhaust hangers to make this exhaust system ready for the installation.
DETAILS:
- Non-resonated version (louder compared to resonated)
- Custom dual-outlet mufflers
- Quad 3.5" double-wall angle-cut tips
- 304 stainless steel construction
- 1/2" thick-cut flanges
- Designed with a flex section
- Includes custom polyurethane hangers to reduce movement and to keep your exhaust in place
- TIG-welded
- Provides an aggressive exhaust note
- 3" piping diameter frees up the flow path to reduce spool while increasing power and torque
NOTE:
- For sedan models only
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 carries a great selection of quality aftermarket performance products brought to you by GrimmSpeed.
This is the GrimmSpeed Cat-Back Exhaust System. GrimmSpeed has combined premium materials, along with a larger piping diameter and smooth bends to provide the performance enthusiast with a satisfying result in terms of both power and sound. This exhaust system has been specifically designed to fit sedan models and will come with new gaskets, hardware, and GrimmSpeed's exhaust hangers to make this exhaust system ready for the installation.
DETAILS:
- Non-resonated version (louder compared to resonated)
- Custom dual-outlet mufflers
- Quad 3.5" double-wall angle-cut tips
- 304 stainless steel construction
- 1/2" thick-cut flanges
- Designed with a flex section
- Includes custom polyurethane hangers to reduce movement and to keep your exhaust in place
- TIG-welded
- Provides an aggressive exhaust note
- 3" piping diameter frees up the flow path to reduce spool while increasing power and torque
NOTE:
- For sedan models only
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