Greddy Performance DD-R Catback Exhaust - 2017-2020 Honda Civic SI (Coupe)
Greddy Performance DD-R Catback Exhaust - 2017-2020 Honda Civic SI (Coupe)
Greddy
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PRODUCT DETAILS ▾
RallySport Direct carries a great selection of quality performance upgrades by the grandfathers of the sport compact industry, Greddy.
On this page, you are looking at the Greddy Performance DD-R Exhaust System. The DD-R Exhaust System is a modern interpretation of Greddy's iconic "Dynamic Dual" exhaust system of the past. This exhaust features a twin high-flow low-restriction compact muffler section that features an aggressive dual-tip exit that produces a race-inspired sound. For those of you who want aggressive looks that match an aggressive sound, you will be pleased with the Greddy Performance DD-R.
DETAILS:
- Durable stainless steel construction
- Combines aggressive looks with an aggressive sound to match
- 3" piping diameter
- 2.5" inlets
- 101.5mm muffler tips with GPP logo
- Tips are removable
- Built-in resonator
- Polished tip finish
- Includes gaskets
- Exhaust hangers are welded onto the OEM locations to make for a direct replacement
- Increases both horsepower and torque
- Produces an aggressive sound
- Saves weight
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 carries a great selection of quality performance upgrades by the grandfathers of the sport compact industry, Greddy.
On this page, you are looking at the Greddy Performance DD-R Exhaust System. The DD-R Exhaust System is a modern interpretation of Greddy's iconic "Dynamic Dual" exhaust system of the past. This exhaust features a twin high-flow low-restriction compact muffler section that features an aggressive dual-tip exit that produces a race-inspired sound. For those of you who want aggressive looks that match an aggressive sound, you will be pleased with the Greddy Performance DD-R.
DETAILS:
- Durable stainless steel construction
- Combines aggressive looks with an aggressive sound to match
- 3" piping diameter
- 2.5" inlets
- 101.5mm muffler tips with GPP logo
- Tips are removable
- Built-in resonator
- Polished tip finish
- Includes gaskets
- Exhaust hangers are welded onto the OEM locations to make for a direct replacement
- Increases both horsepower and torque
- Produces an aggressive sound
- Saves weight
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