Does the Fabspeed Center Muffler Bypass Pipe fit both the GT3 and GT3 RS?

Yes. The Fabspeed Center Muffler Bypass Pipe fits the 991.1 Porsche 911 GT3 from 2014 to 2016 and the 991.1 GT3 RS from 2015 to 2016, both with the 4.0-liter flat-six. It replaces the factory center muffler and is designed to work with the factory side mufflers on either car.

How is the bypass pipe different from the Mini MaxFlo center muffler?

The bypass pipe removes the center muffler entirely and runs a free-flowing talk-pipe in its place, so it is the louder, most aggressive of the two center-section options. The Mini MaxFlo keeps a muffler and gives a deeper note at lower volume. Choose the bypass pipe for maximum sound and flow, or the Mini MaxFlo for a more restrained upgrade.

Does it keep the Sport Mode button working?

Yes. When the Center Muffler Bypass Pipe is run with the factory side mufflers, the GT3 retains Sport Mode button functionality. The factory valve still opens and closes on command, so you keep control over the exhaust character even though the center muffler has been replaced with a straight talk-pipe.

How much louder is it?

The bypass pipe is noticeably louder and more aggressive than the factory setup or a muffled center section, because it replaces the center muffler with an open talk-pipe that blends both cylinder banks. Expect a hard-edged, motorsport tone, especially at higher rpm, with Sport Mode still letting you dial the character back through the side mufflers.

What is it made of, and how much weight does it save?

The Fabspeed Center Muffler Bypass Pipe is built from 14-16 gauge T304 stainless steel and saves roughly ten pounds at the rear of the car compared with the heavy factory center muffler. That lighter weight sits low and behind the rear axle, exactly where owners of a track-focused GT3 want to shed mass.

Is it difficult to install?

No. The bypass pipe uses a simple two-bolt mount and installs where the factory center muffler sits, so it is a straightforward bolt-on job for an experienced installer or a capable home mechanic with the car safely raised. It works with the rest of the factory exhaust, so no other parts need to change.

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Description

Fabspeed Center Muffler Bypass Pipe for 991.1 Porsche 911 GT3 & GT3 RS

The Fabspeed Center Muffler Bypass Pipe for the 991.1 Porsche 911 GT3 & GT3 RS features an innovative talk-pipe design that blends the exhaust from the right and left cylinders, creating a smooth, refined sound. The simplified two-bolt mounting system makes installation easier than ever, while saving 10lbs from the rear of the vehicle. This bypass pipe works seamlessly with factory headers, cats, and side mufflers, retaining the functionality of the OEM valve system for full sound control. When used with the factory side mufflers, the sport mode control button remains functional, allowing for customizable exhaust sound at the push of a button.

Features

Aggressive sound
Improved exhaust flow and weight savings
Saves 10lbs from the rear of the vehicle
Works with factory headers, cats and side mufflers
Retains sport mode control button when used with factory side mufflers
14-16ga T304 stainless steel construction
Includes 4″ deluxe dual style tips in your choice of finish
All Fabspeed performance products are backed by the Fabspeed lifetime warranty

Applications

Porsche 911 GT3: 991.1 | 2014-2016 | 4.0L F6
Porsche 911 GT3 RS: 991.1 | 2015-2016 | 4.0L F6

Notes

All Fabspeed products are expected to ship within one to two weeks of order, though timelines are often much quicker

Frequently Asked Questions

Does the Fabspeed Center Muffler Bypass Pipe fit both the GT3 and GT3 RS? Yes. The Fabspeed Center Muffler Bypass Pipe fits the 991.1 Porsche 911 GT3 from 2014 to 2016 and the 991.1 GT3 RS from 2015 to 2016, both with the 4.0-liter flat-six. It replaces the factory center muffler and is designed to work with the factory side mufflers on either car.
How is the bypass pipe different from the Mini MaxFlo center muffler? The bypass pipe removes the center muffler entirely and runs a free-flowing talk-pipe in its place, so it is the louder, most aggressive of the two center-section options. The Mini MaxFlo keeps a muffler and gives a deeper note at lower volume. Choose the bypass pipe for maximum sound and flow, or the Mini MaxFlo for a more restrained upgrade.
Does it keep the Sport Mode button working? Yes. When the Center Muffler Bypass Pipe is run with the factory side mufflers, the GT3 retains Sport Mode button functionality. The factory valve still opens and closes on command, so you keep control over the exhaust character even though the center muffler has been replaced with a straight talk-pipe.
How much louder is it? The bypass pipe is noticeably louder and more aggressive than the factory setup or a muffled center section, because it replaces the center muffler with an open talk-pipe that blends both cylinder banks. Expect a hard-edged, motorsport tone, especially at higher rpm, with Sport Mode still letting you dial the character back through the side mufflers.
What is it made of, and how much weight does it save? The Fabspeed Center Muffler Bypass Pipe is built from 14-16 gauge T304 stainless steel and saves roughly ten pounds at the rear of the car compared with the heavy factory center muffler. That lighter weight sits low and behind the rear axle, exactly where owners of a track-focused GT3 want to shed mass.
Is it difficult to install? No. The bypass pipe uses a simple two-bolt mount and installs where the factory center muffler sits, so it is a straightforward bolt-on job for an experienced installer or a capable home mechanic with the car safely raised. It works with the rest of the factory exhaust, so no other parts need to change.

About Fabspeed

Fabspeed Motorsport is situated in Fort Washington, Pennsylvania, within the United States of America. Their extensive 26,000 sqft. facility serves as a hub for various car clubs, including Porsche Club of America, Ferrari, McLaren, Lamborghini, and more. The company is renowned for its comprehensive approach to product development. They handle the entire process, from design and engineering to dyno testing, street trials, and racing assessments, ensuring the quality and performance of every item. Fabspeed also collaborates closely with race engine builders and tuners hailing from Italy, Germany, and the United States, resulting in the creation of the Ultimate Performance parts. To cater to their passionate global audience, Fabspeed meticulously crafts systems using aerospace-grade austenitic stainless steel, titanium, and carbon fiber materials, setting a standard for excellence in the industry.

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.

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Fabspeed Center Muffler Bypass Pipe for 991.1 Porsche 911 GT3 & GT3 RS [FS.POR.991GT3.CMBX]

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Fabspeed Center Muffler Bypass Pipe for 991.1 Porsche 911 GT3 & GT3 RS

Features

Applications

Notes

Frequently Asked Questions

About Fabspeed

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