Valvetronic Designs 2014-2019 Porsche 991 GT3 / GT3 RS Valved Sport Exhaust System
or as low as $333.25/mo with Affirm
Available
Sound & Video
Sound & Control
Valves Open
Valves open, the 991 GT3 unleashes a high-pitched, motorsport-bred scream that builds with relentless intensity through the rev range. The extended exhaust path and X-pipe design produce a clean, exotic tone free of unrefined frequencies — pure naturally aspirated theater from idle to redline.
Valves Closed
Valves closed, the system transforms the GT3 into a surprisingly docile companion. Highway cruising is drone-free and cabin noise drops to near-stock levels, making cross-country drives and early-morning departures completely neighborly. The dual personality is genuine — not a compromise, but two fully realized exhaust characters.
Construction & Engineering
- Material: T304 Stainless Steel or Grade 5 Titanium
- Pipe Diameter: 2.5-inch mandrel-bent tubing
- Center Section: Stamped cross-section X-pipe with extended loop sections
- Valve System: Electronic exhaust valves with factory integration
- Optional: Free-flow headers for maximum performance and volume
- Reversibility: 100% bolt-on, fully reversible to stock
Specifications
Fitment
| Year | Make | Model | Variant |
|---|---|---|---|
| 2014–2016 | Porsche | 911 GT3 | 991.1 |
| 2014–2016 | Porsche | 911 GT3 RS | 991.1 |
| 2017–2019 | Porsche | 911 GT3 | 991.2 |
| 2017–2019 | Porsche | 911 GT3 RS | 991.2 |
Installation
What’s Included
- Valvetronic Designs valved sport exhaust rear section
- Stamped cross-section X-pipe with extended loop sections
- Electronic valve assemblies
- All required gaskets, clamps, and mounting hardware
- Installation instructions
VALVETRONIC DESIGNS
Valvetronic Designs Valved Sport Exhaust System for Porsche 991 GT3 / GT3 RS
Eighteen Months of R&D Distilled into One Motorsport-Grade Flat-Six Voice
The 991-generation GT3 occupies sacred ground in the Porsche hierarchy. Whether in 3.8-liter 991.1 form or the enlarged 4.0-liter 991.2 naturally aspirated flat-six, this engine represents Porsche's uncompromising commitment to high-revving, atmospheric power delivery. But the factory exhaust, engineered to satisfy increasingly strict global noise standards, leaves an entire octave of motorsport character locked behind catalytic converters and restrictive muffler chambers. The engine deserves better, and so does the driver.
Born from over eighteen months of dedicated research and development, the Valvetronic Designs 991 GT3 valved exhaust is purpose-engineered to release the full harmonic spectrum of the naturally aspirated flat-six. The system features 2.5-inch mandrel-bent tubing paired with a stamped cross-section X-pipe and strategically added loop sections that extend the exhaust path length — a design choice that refines the tone, eliminates harsh frequencies, and produces a high-pitched, authentic motorsport note that builds progressively with RPM.
Combined with optional free-flow headers, the complete Valvetronic exhaust package transforms the 991 GT3 into a sensory experience that rivals dedicated race cars. The electronic valve system provides on-demand control, allowing instantaneous switching between unrestricted track aggression and refined daily-driver refinement without touching a wrench or crawling under the car.
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