Will the Fabspeed Side Muffler Bypass fit my 911 Carrera GTS?

It is built for the 992.2 Porsche 911 Carrera GTS with the 3.6L T-Hybrid flat-six, from 2025 onward, and is designed for the GTS only. Confirm your model and year before ordering to be sure it matches your vehicle.

What does it do for sound, power and weight?

The Fabspeed Side Muffler Bypass sharpens the exhaust to a richer, catback-level tone, frees up to 20 horsepower and 18 lb-ft, and removes roughly 22 pounds from the rear of the car. The weight saving is significant because the OEM side mufflers are heavy, and losing them also helps the GTS feel more responsive.

It replaces only the rear side mufflers and leaves the factory emissions equipment untouched, and Fabspeed lists it as emissions legal in all U.S. states. Emissions and noise rules still vary by state and locality, so confirm the requirements where you live and drive before ordering.

How is it made, and how does it install?

The bypass is 3D-scanned and CAD-designed, then built in-house in the USA for factory-grade fitment, installing directly in place of the OEM side mufflers. It is backed by Fabspeed's lifetime warranty against manufacturing defects.

Can I run it with the Fabspeed Sport Cats?

Yes. The bypass and the Fabspeed Sport Cats are designed for the same 992.2 GTS and work well together, with the Sport Cats freeing flow upstream and the bypass opening up the rear for a complete, more aggressive exhaust upgrade.

No. Fabspeed does not list a tune as required to run the bypass. A calibration can complement the improved flow, but the bypass delivers its sound, weight and response benefits on an otherwise stock car.

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Description

Fabspeed Side Muffler Bypass for 992.2 Porsche 911 Carrera GTS

Give the 992.2 Carrera GTS a sharper voice with Fabspeed’s Side Muffler Bypass, engineered for a richer, more engaging exhaust note without compromising legality. 3D scanned and CAD designed in the USA, this lightweight assembly saves weight compared to the OEM side mufflers while preserving clean fitment and durability. Delivering catback-level performance character and response, it is emissions legal in all U.S. states for worry-free everyday use.

Features

Improved sound
3D scanned and CAD designed at Fabspeed USA
Light weight design saves weight compared to OEM system
Catback performance, emissions legal in all US states
All Fabspeed performance products are backed by the Fabspeed Lifetime Warranty

Applications

Porsche 911 Carrera GTS: 992.2 | 2025-present | 3.6L T-Hybrid Flat-Six

Notes

Muffler system is designed for GTS models only
All Fabspeed products are expected to ship within one to two weeks of order, though timelines are often much quicker

Frequently Asked Questions

Will the Fabspeed Side Muffler Bypass fit my 911 Carrera GTS? It is built for the 992.2 Porsche 911 Carrera GTS with the 3.6L T-Hybrid flat-six, from 2025 onward, and is designed for the GTS only. Confirm your model and year before ordering to be sure it matches your vehicle.
What does it do for sound, power and weight? The Fabspeed Side Muffler Bypass sharpens the exhaust to a richer, catback-level tone, frees up to 20 horsepower and 18 lb-ft, and removes roughly 22 pounds from the rear of the car. The weight saving is significant because the OEM side mufflers are heavy, and losing them also helps the GTS feel more responsive.
Is it street legal? It replaces only the rear side mufflers and leaves the factory emissions equipment untouched, and Fabspeed lists it as emissions legal in all U.S. states. Emissions and noise rules still vary by state and locality, so confirm the requirements where you live and drive before ordering.
How is it made, and how does it install? The bypass is 3D-scanned and CAD-designed, then built in-house in the USA for factory-grade fitment, installing directly in place of the OEM side mufflers. It is backed by Fabspeed’s lifetime warranty against manufacturing defects.
Can I run it with the Fabspeed Sport Cats? Yes. The bypass and the Fabspeed Sport Cats are designed for the same 992.2 GTS and work well together, with the Sport Cats freeing flow upstream and the bypass opening up the rear for a complete, more aggressive exhaust upgrade.
Do I need a tune? No. Fabspeed does not list a tune as required to run the bypass. A calibration can complement the improved flow, but the bypass delivers its sound, weight and response benefits on an otherwise stock car.

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 Side Muffler Bypass for 992.2 Porsche 911 Carrera GTS [FS.POR.9922GTS.SMB]

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Fabspeed Side Muffler Bypass for 992.2 Porsche 911 Carrera GTS

Features

Applications

Notes

Frequently Asked Questions

About Fabspeed

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