SOUL Performance Center-Muffler-Bypass Exhaust System with Slash Satin Black Tips for 991 Porsche 911 GT3 / GT3 RS / R

SOUL Performance Products’ Center Muffler Bypass Exhaust for the Porsche 991.1 / 991.2 GT3 turns up the volume on the car’s flat-six soundtrack by replacing the bulky factory center muffler with a lightweight, free-flowing T304L stainless section, all while retaining the side mufflers and factory valves so you can still control volume with the sport button. The result is a richer, more invigorating wail in everyday driving and a true track-inspired tone when paired with upgraded headers, without introducing harshness or compromising daily comfort. Mandrel-bent tubing and quality clamps ensure a precise, direct bolt-on fit that drops roughly 11lb from the rear of the car and integrates cleanly with OEM components. Finished here with 4″ Slash Cut Single Wall tips in Satin Black, the system visually fills out the rear bumper with a purposeful motorsport look that matches the more aggressive exhaust note. Tested in fixtures, foam packed for safe shipping, and backed by SOUL’s renowned Lifetime Warranty for both street and track use, this Center Muffler Bypass is an ideal upgrade for 991 GT3, GT3 RS, and 911R owners who want more emotion, more sound, and less weight in one straightforward package.

Development & Testing

• SOUL Performance Products received a request to provide an exhaust system solution that enhances volume and flow, without the need for a substantial financial investment. By retaining the stock side mufflers and valves, you retain the ability to control the sound using the factory sport button. This Porsche exhaust system also complements upgraded headers, offering a combination of power and sound that is ideal for track enthusiasts. Rest assured, the product is backed by our Lifetime Warranty specifically for track use. It is worth noting that no check engine lights were observed during both the development and extensive road testing phases.

Construction

• Every exhaust system is meticulously crafted using mandrel-bent T304L stainless steel tubing. To securely mount the system onto the vehicle, Mikalor Supra Heavy-Duty W4 Clamps are provided. These clamps utilize projection welding spots, a swinging bridge, a high-strength stainless steel bolt, and a unique design featuring a captive nut and trunnion, resulting in exceptional clamping forces and long-lasting durability. In addition, AccuSeal clamps are included to connect the exhaust system to the side mufflers, ensuring a secure and reliable connection.

Bolt On & Go

• To guarantee flawless fitment, every exhaust undergoes rigorous testing in a dedicated fixture. Furthermore, each exhaust system is meticulously foam packed, ensuring they arrive in impeccable condition. Installing the Center Muffler Bypass Exhaust is a straightforward process, making it suitable for most do-it-yourself enthusiasts to handle with ease.

Features

• Lightweight, free-flowing T304L stainless center muffler bypass
• Retains factory side mufflers and valves with sport-button volume control
• Sharper, louder flat-six tone
• 4″ Satin Black Slash Cut Single Wall tips for a motorsport look
• Direct bolt-on fitment, fixture-tested and backed by SOUL’s Lifetime Warranty

Applications

• Porsche 911 GT3: 991.1, 991.2 (2013-2019)
  [3.8L F6] [4.0L F6]
• Porsche 911 GT3 RS: 991.1, 991.2 (2015-2019)
  [4.0L F6]
• Porsche 911 R: 991.1 (2016)
  [4.0L F6]
  

Notes

• Please note that the primary image displays the signature satin tips

About SOUL Performance

SOUL Performance Products was founded by a group of automotive enthusiasts with deep industry experience and a commitment to doing right by their customers. Their mission is to deliver outstanding performance parts at fair pricing, backed by quality service and one of the best warranties in the industry. SOUL develops high-performance exhaust systems and components that are engineered for exceptional sound and proven performance, with products ready to ship quickly worldwide. Guided by core values of honesty, transparency, and passion for cars, they build strong community connections and prioritize customer satisfaction at every step. Operating out of a dedicated facility in Willow Grove, Pennsylvania, SOUL combines hands-on research, engineering, and manufacturing expertise to create parts that meet and exceed the demands of serious enthusiasts.