Does SOUL Performance make side-muffler bypass pipes for the 991?

Yes. The SOUL Performance 991 Side-Muffler Bypass Pipes is built by SOUL Performance for the 991 Porsche 911 GT3 / GT3 RS.

Which models does this fit?

The Side-Muffler Bypass Pipes is engineered for the 991 Porsche 911 GT3 / GT3 RS. Fitment is specific to the chassis and model years listed in the Applications section above.

How does it change the sound?

SOUL engineers the Side-Muffler Bypass Pipes to sharpen tone and character while controlling unwanted resonance. The final sound depends on the rest of your setup.

Is an ECU tune required?

A tune is not required to fit the Side-Muffler Bypass Pipes. Many owners add a tune to maximize the gains.

How is it constructed?

SOUL builds the Side-Muffler Bypass Pipes from durable mandrel-bent stainless steel with precise, fixture-tested fitment.

Is professional installation recommended?

Yes. We recommend installing the Side-Muffler Bypass Pipes through a qualified technician to ensure correct fitment and a proper seal.

Description

Additional Info

Shipping policy

BP PRICING DIFFERENCE

Reviews

Product Inquiry

Description

SOUL Performance Side-Muffler Bypass Pipes for 991 Porsche 911 GT3 / GT3 RS

SOUL Performance Products’ Side Muffler Bypass Pipes for the Porsche 991 GT3 / GT3 RS / 911R replace the bulky factory side mufflers with lightweight, free-flowing 3″ T304L stainless tubing to shed roughly 38lb from the rear of the car while significantly reducing heat soak in the engine bay and around the rear tires. Large 3″ mandrel-bent primaries and an enlarged opening into the secondary pipe improve flow and help equalize pressure in the center muffler, promoting longevity under repeated hard use. The result is a louder, more exotic, race-derived exhaust note with noticeable cabin presence in the 2,000-3,000rpm range and an even more intoxicating wail above 5,000 rpm, turning every wide-open throttle pull into an event. Each set is built in-house at SOUL’s Willow Grove, PA facility from 3″.065″-wall T304L stainless with high-quality flex bellows for durability, then fixture-tested for precise, direct bolt-on fitment with no cutting or permanent modification required. Backed by SOUL’s renowned Lifetime Warranty for both street and track use, these side muffler bypass pipes are an ideal solution for 991.1 / 991.2 GT3, GT3 RS, and 911R owners who want major weight savings, cooler temps, and an always-exciting exhaust note.

Development & Testing

By removing the side mufflers, significant weight savings are achieved, aiding in improved heat management within the engine bay and promoting cooler temperatures for the rear tires. The hole leading to the secondary pipe is enlarged to equalize pressure in the center muffler, thereby reducing the likelihood of it cracking. Additionally, the inclusion of flex bellows allows for effortless installation while preventing cracking under extreme racing conditions.
The flow is enhanced by incorporating primary piping with a generous diameter of 3 inches.

Construction

Maximum durability is achieved in every set by utilizing T304L stainless steel tubing, mandrel bent with a diameter of 3 inches and a wall thickness of 0.065 inches. Furthermore, high-quality flex bellows are employed to ensure longevity and reliability.

Sound

Anticipate a noticeable increase in volume without any undesirable tonal aspects. Instead, you’ll be delighted with a more exotic and race-inspired auditory experience. Enhanced cabin presence will be discernible within the 2000-3000rpm range, while the exhaust note will become even more remarkable beyond 5000rpm.

Bolt On & Go

Every exhaust undergoes thorough testing within a fixture to guarantee impeccable fitment. Subsequently, it is carefully foam packed to ensure its flawless condition upon arrival, ready for installation without the need for any cutting or modification.

Features

Lightweight T304L stainless side bypass pipes
38lb rear-end weight reduction and improved heat management
Louder, more exotic, race-inspired exhaust note
Mandrel-bent primaries with enlarged secondary opening for smoother flow
Direct bolt-on fitment with flex bellows, backed by SOUL’s Lifetime Warranty

Applications

Porsche 911 GT3: 991.1, 991.2 | 2013-2019 | 3.8L 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 this particular product does not possess CARB certification and may not comply with regulations for use on emissions controlled vehicles. It is designed exclusively for race purposes.

Frequently Asked Questions

Does SOUL Performance make side-muffler bypass pipes for the 991? Yes. The SOUL Performance 991 Side-Muffler Bypass Pipes is built by SOUL Performance for the 991 Porsche 911 GT3 / GT3 RS.
Which models does this fit? The Side-Muffler Bypass Pipes is engineered for the 991 Porsche 911 GT3 / GT3 RS. Fitment is specific to the chassis and model years listed in the Applications section above.
How does it change the sound? SOUL engineers the Side-Muffler Bypass Pipes to sharpen tone and character while controlling unwanted resonance. The final sound depends on the rest of your setup.
Is an ECU tune required? A tune is not required to fit the Side-Muffler Bypass Pipes. Many owners add a tune to maximize the gains.
How is it constructed? SOUL builds the Side-Muffler Bypass Pipes from durable mandrel-bent stainless steel with precise, fixture-tested fitment.
Is professional installation recommended? Yes. We recommend installing the Side-Muffler Bypass Pipes through a qualified technician to ensure correct fitment and a proper seal.

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.

Additional Information

The Bulletproof Automotive website contains many thousands of products purchased in multiple different currencies. All of the prices are entered manually and accurately at the time of entry. Due to the consistently fluctuating international exchange rates, at times prices may not be able to be honored at their original intended rate. We apologize for any inconvenience this may cause, unfortunately our website is unable to compensate dynamically for what can at times be volatile changes in the cost of items due to currency values fluctuating, changes in prices from suppliers, changes in shipping and import duties, and other factors. Rest assured that any order you place on line will be at zero risk to you in this area. If in the event your order cannot be fulfilled at the original intended website price we will offer you a 100% refund, no questions asked. We will continue to do our best to maintain updated prices and we will always continue to offer our price match guarantees as well to ensure our prices are always the best for you. In short, prices may change without notice. It is always advised to give us a call prior to placing your order online to confirm availability and to confirm current pricing.

Shipping Policy

Items that are in stock in the US, either at Bulletproof’s warehouse or at a supplier’s warehouse, are generally delivered within 7-10 days. Special order items from overseas take considerably longer. As a courtesy Bulletproof offers delivery estimates to our customers which take into consideration manufacturer availability and shipping schedule. These estimates represent our best guess based on previous orders from the manufacturer and do not in any way imply a guaranteed delivery window. Many manufacturers work in a “just in time” inventory system and often take 2-20+ weeks to produce an item once an order is submitted. All deliverable items are then sent to our Japanese warehouse. Bulletproof ships a minimum of one full ocean freight container every month from Japan, oftentimes more than one a month. Ocean freight takes an average of 4 weeks. Typically it breaks down to one week in Japan for paperwork and customs, two weeks by boat and one week in US customs/clearance. Due to the wide number of variables between manufacturer and shipping schedules, delivery estimates are simply just that – estimates. We attempt to estimate conservatively and we usually deliver faster than our estimates suggest. It is not Bulletproof’s policy to guarantee delivery time of any special order item, this is impossible for us to do. By ordering you acknowledge that there is no required delivery ETA and an order may not be canceled or altered due to manufacturing or shipping delays, all ETA’s are provided as a best guess only. Please review the full Terms & Conditions here.

BP Pricing Difference

We do pricing a little differently on our JDM brands and we believe in making things simple and clear. No hidden fees or surcharges. Every price you see includes the shipping cost to our office in Los Angeles, California and all the associated taxes/duties/fees for bringing the products into the US. The only shipping you ever pay is from our facility in the US to your location. Be wary of resellers that don’t include the cost of international shipping in their pricing on JDM parts. While we believe we’ll always have the lowest all-in price on JDM products, we offer a price match guarantee for all authentic parts purchased from authorized dealers as well. For many international customers, it’s much more affordable to ship from the USA than from Japan directly, as the air freight and ocean freight costs are typically much less. However, for customers looking to ship directly from Japan outside of North America, or domestically in Japan, we can provide pricing specifically for that scenario. Please do not hesitate to contact us with any pricing questions or concerns. Please email us at sales@bulletproofautomotive.com with any inquiries.

Reviews

There are no reviews yet.

Only logged in customers who have purchased this product may leave a review.

Product Inquiry

First Name (*required)

Last Name (*required)

Your E-Mail (*required)

Telephone Number (*required)

Country (*required)

Vehicle Year / Make / Model (*required)

Please Explain What do you want to do with your vehicle

Additional Information (optional)

I agree to the terms & conditions and privacy policy and to have Bulletproof Automotive LLC contact me for promotion, marketing and other purposes via email, phone or SMS message.

SOUL Performance Side-Muffler Bypass Pipes for 991 Porsche 911 GT3 / GT3 RS [POR.991GT3.SMB]

Guaranteed Safe Checkout

SOUL Performance Side-Muffler Bypass Pipes for 991 Porsche 911 GT3 / GT3 RS

Development & Testing

Construction

Sound

Bolt On & Go

Features

Applications

Notes

Frequently Asked Questions

About SOUL Performance

Reviews