991 GT3 Muffler Bypass – SOUL Center Muffler Delete Exhaust for GT3 / GT3 RS / 911R

Raw Sound. Reduced Weight. Racing Focused.

The Porsche 991 GT3 lineup is already among the most emotionally engaging sports cars ever built. However, for many enthusiasts, the factory center muffler can mute some of that raw mechanical soundtrack. Enter the SOUL Center Muffler Bypass, a bolt-on solution that dramatically enhances volume, tone, and responsiveness—while shaving off unnecessary weight.

Because when you’re behind the wheel of a GT3, every decibel counts.

Engineered for 991 GT3, GT3 RS, and 911R

This bypass pipe is a direct fit for all Porsche 991.1 and 991.2 models in the GT3 family. It replaces the restrictive factory center muffler with a free-flowing X-pipe, allowing your flat-six to sing in full voice.

Compatible With:

• Porsche 911 GT3 (991.1 and 991.2)

• Porsche 911 GT3 RS (991.1 and 991.2)

• Porsche 911R (2016 limited edition)

• Works with OEM side mufflers and tips

• Not compatible with 992 GT3 models

Looking for a full system? Pair it with the SOUL Sport Side Mufflers or Porsche GT3 Titanium Exhaust Tips.

Constructed for Performance, Built for Longevity

SOUL Performance uses T304L stainless steel for all its center muffler bypass systems. This material is corrosion-resistant, lightweight, and designed to handle extreme exhaust temperatures without cracking or fatigue.

Construction Features:

• Mandrel-bent tubing for smooth flow

• TIG-welded by hand in the USA

• Designed for maximum clearance and alignment

• Brushed finish for premium look

• Lifetime warranty backed by SOUL

Because of its race-proven durability, this bypass system is trusted by weekend warriors and track veterans alike.

Transform Your Sound Instantly

The factory muffler restricts the glorious noise your naturally aspirated flat-six was born to make. The SOUL Center Muffler Bypass restores the aggressive, high-RPM howl that enthusiasts crave—without introducing rasp or drone.

Sound Benefits:

• Deeper, more aggressive tone

• Louder startup and cold idle

• Crisp high-RPM scream above 5,000 RPM

• No interior drone at cruising speeds

• Enhanced engine feedback and throttle response

Although it increases volume, the tone remains refined and balanced—exactly what you’d expect from a car as pure as the GT3.

Weight Savings You Can Feel

Weight reduction is always a benefit, especially in a car as purpose-built as the GT3. By removing the factory center muffler and replacing it with this lightweight bypass X-pipe, you reduce unsprung mass and improve vehicle dynamics.

Average Weight Savings:

• ~11–13 lbs (5–6 kg) depending on model

• Reduced mass behind the rear axle

• Slightly improved weight balance and handling

It may seem like a small number, but every pound counts—particularly on the track.

Installation: Straightforward and Fully Reversible

Designed with factory flanges and hanger points, the SOUL Center Muffler Bypass is 100% bolt-on with no modifications required. It works with both OEM and aftermarket valved systems and retains stock or aftermarket exhaust tips.

Install Overview:

1. Raise the car securely

2. Remove the factory center muffler and associated hardware

3. Install the SOUL bypass using included clamps and fittings

4. Torque to spec and test for exhaust leaks

5. Fire up and enjoy the new soundscape

Because of its clean fitment, this system is ideal for track builds, show cars, or high-performance street setups.

Why Choose SOUL for Your 991 GT3 Muffler Bypass?

Unlike cheaper kits or universal muffler deletes, SOUL’s solution is handcrafted, dyno-tested, and backed by an industry-leading warranty. Every product is engineered for Porsche applications only—ensuring quality, fitment, and reliability that enthusiasts trust.

Highlights:

• Lifetime warranty

• Drone-free design

• Premium materials

• Built and tested in the USA

• Loved by GT3 forums and PCA members alike

For a fully carbon-matched look, add our GT3 Carbon Rear Diffuser or GT3 RS Style Wing Uprights.