997.1 GT3 Exhaust

The Porsche 997.1 GT3 is already an exceptional machine, but the right exhaust system can take it to another level. The factory setup, while well-engineered, holds back horsepower, response, and sound due to restrictive pressure dynamics and sound regulations. Dundon Motorsports’ exhaust systems remove these limitations, allowing your 4.0L flat-six to breathe freely, rev harder, and sound exactly how a GT3 should—aggressive, sharp, and race-ready.

At Dundon Motorsports, we specialize in high-performance exhaust solutions that don’t just change the sound, but increase power, improve throttle response, and reduce weight. Whether you’re looking for race-proven street headers, lightweight titanium mufflers, or precision-crafted exhaust tips, we have a solution tailored to both street and track-focused Porsche enthusiasts.

Not sure which Dundon muffler setup is right for your GT3? Read our expert guide: Which Dundon Muffler Option Is Right for Me?

🔗 Explore all 997.1 GT3 performance upgrades.

Why Upgrade Your 997.1 GT3 Exhaust?

Even though the 997.1 GT3 is an icon, its factory exhaust system leaves power on the table. Stock components are built to meet regulations rather than maximize performance. This means restricted exhaust pressure, unnecessary weight, and a quieter, less engaging sound than what the car is truly capable of.

With Dundon Motorsports exhaust systems, you’ll experience:

– More horsepower through optimized exhaust pressure and flow.

– Sharper throttle response and quicker rev matching.

– A weight reduction that enhances handling and balance.

– Multiple sound options to match your needs—from race-bred aggression to street-legal refinement.

For those needing a quieter solution to meet track sound restrictions, our new quiet tips allow you to enjoy Dundon performance without exceeding noise limits.

997.1 GT3 Exhaust Options

Street Header Lifetime Muffler Power Package – The Ultimate 997.1 GT3 Upgrade

For 997.1 GT3 owners looking for the biggest performance gains, our Street Header Lifetime Muffler Power Package is the gold standard. This race-developed system is track-tested and dyno-proven, delivering a significant increase in horsepower and torque while providing an aggressive, motorsport-inspired exhaust note.

With precision-engineered stainless steel construction, this system is designed for maximum durability and performance, making it the perfect long-term investment for your GT3.

Long Tube Street Header Exhaust System – Lightweight Power Gains

If you’re looking for a simple yet effective exhaust upgrade, our Long Tube Street Header Exhaust System is the perfect solution. By improving exhaust pressure balance and removing restrictive stock components, this system delivers real performance gains without requiring additional tuning. Designed for track and street use, this setup enhances power delivery, throttle response, and sound quality while maintaining street-legal practicality.

Titanium Mufflers – The Lightweight Upgrade

For those who want weight reduction without sacrificing performance, our Titanium Mufflers provide the best balance of power and lightweight materials. Crafted from high-grade titanium, these mufflers help shed unnecessary weight while producing a crisp, race-inspired sound. The result is a sharper, more dynamic driving experience with improved power-to-weight ratio and enhanced acceleration.

Inconel Megafon Mini Crankpipe – Maximum Sound, Maximum Performance

For track-focused drivers looking for an unmatched sound experience, our Inconel Megafon Mini Crankpipe is the answer. Built for high-performance applications, this system amplifies the raw, high-revving scream of the GT3’s flat-six while maintaining precision pressure balance for optimal power delivery

Lifetime Center Mufflers – Built to Last

For those seeking a long-term performance upgrade, our Lifetime Center Mufflers come with a lifetime guarantee. These mufflers are engineered to last the life of your GT3, ensuring consistent power gains and exhaust refinement over the years. Whether you’re using your GT3 on the track or the street, this system provides long-term durability with improved sound and response.

Exhaust Tips – Customizable Style & Sound

For those who want a personalized touch, Dundon Motorsports offers a range of exhaust tips in different designs, finishes, and sound characteristics. Whether you prefer an aggressive, race-inspired look or a refined, OEM+ style, our high-quality exhaust tips provide both aesthetics and performance.

We also offer new quiet tips for GT3 owners who need to reduce exhaust volume to comply with track regulations while keeping the signature Dundon sound and performance.

Why Choose Dundon Motorsports for Your 997.1 GT3 Exhaust?

While many exhaust manufacturers focus on sound alone, Dundon Motorsports develops exhaust systems that deliver real-world performance gains. Every system is track-tested, dyno-proven, and engineered to maximize power while maintaining reliability. Our components fit perfectly with no check engine lights or tuning issues, ensuring an easy and effective upgrade.