This item and any similar items are not CARB approved and therefore not for sale in the state of California or other states that require CARB certification. No assessment is being made regarding this product's compliance with the EPA's anti tampering policy, only that the necessary testing and validation has not been completed. Please check with your local enforcement officials regarding legality of use in your place of residence.
Fabspeed Valvetronic Nordschleife Cat-Back Exhaust System for 992 Porsche 911 GT3 & GT3 RS
The Fabspeed Motorsport Valvetronic Nordschleife Cat-Back Exhaust System introduces the 992 GT3 to an authentic and exotic sports car sound, all while preserving the functionality of Porsche’s Sport Exhaust valvetronic push-button system (PSE). Their meticulous design process commenced with the comprehensive 3D laser scanning of the entire OEM exhaust system and the underside of the GT3’s flat 6 engine, utilizing the Creaform 700 Handscan. This allowed for the creation of a precise Solidworks 3D model of the exhaust. The subsequent CAD design phase, built upon this model, ensuring a seamless fit in line with Porsche Motorsport’s exacting standards. After numerous iterations, focusing on sound optimization and incremental dyno testing, they arrived at the decision to incorporate their signature cast 70mm 2.75″ x-pipe. This choice facilitated the synchronization of the two cylinder banks, aiding in exhaust scavenging and mitigating resonance. The exhaust valves employed are sourced from Helical Limited, a reputable manufacturer in the United Kingdom known for producing aerospace-quality exhaust valves. These valves, certified under ISO 9001, are the same trusted by renowned brands like Ferrari, McLaren, Pagani, Koeniggseeg, and Porsche for their GT cars. Fabspeed’s exhaust systems are crafted in-house, utilizing mandrel-bent T304 stainless steel, and they offer a selection of five different tip options to cater to individual preferences.
Sound
When PSE (Porsche sport exhaust) is deactivated, the valvetronic exhaust system offers a subtle increase in volume. However, when PSE is activated, it transforms the exhaust note of the 4.0L engine into a truly exotic sound, marked by a significant volume boost. The exhaust note evolves from the smooth purr of the OEM exhaust to the aggressive and race-bred snarl reminiscent of a 911 CUP car. The investment cast x-pipe, meticulously designed through CAD, plays a pivotal role in delivering the high-pitched and sporty sound characteristic of the GT3 sports car. Fabspeed’s commitment to excellence is underscored by their approach, involving the design and construction of four different exhaust systems to ensure they deliver only the very best in terms of both sports car sound and maximum power.
Power
This exhaust system enhances Porsche’s original design by increasing the pipe diameter from 2.5 inches to 2.75 inches (70mm) and replacing the factory h-pipe with our signature cast x-pipe. Through DynoJet testing, it revealed substantial benefits, yielding a remarkable +17.5 crank hp or +14whp (representing horsepower at the wheels) at 4200rpm. Additionally, there was a notable increase in torque at the lower end, with a gain of 17 ft/lbs at 4200rpm. These performance enhancements deliver a tangible improvement in driving experience, accompanied by significant rear weight reduction. It’s important to note that a 3″ x-pipe resulted in a loss of 15ft/lbs of torque and a decrease of -10hp compared to the 70mm option, highlighting the superiority of the latter choice. It’s a clear case of “buyer beware,” as larger is unequivocally not the right direction to take.
Features
Significant dyno gains across the rpm band. +17ft/lbs @4200 rpm and 17.5hp crank +14whp @4200rpm
Dyno developed incrementally to give you the maximum horsepower and superlative GT3 cup style sports car sound
Weight savings of 5lbs vs the factory exhaust
Completely retains PSE valved exhaust functionality
Uses aerospace quality helical limited exhaust valves imported from the U.K., the best performing and most reliable valves available at any price
Helical exhaust valves are aerospace grade valves used by the likes of Porsche , Ferrari, McLaren , Pagani and Koeniggseeg
Incorporates Fabspeed’s signature cast x-pipe for superior flow and exhaust scavenging
Constructed from high-quality 14-16ga CNC mandrel-bent T304L stainless steel for optimum flow and maximum durability
3D Laser scanned and CAD designed for perfect OEM fitment using an Ametek Handyscan 700
Simple DIY bolt-on installation- comes with everything you need for a simple installation
No check engine light guaranteed- as its cat-back emissions compliant
This cat-back system is emissions legal in all 50 states
All Fabspeed performance products are backed by the Fabspeed lifetime warranty
Applications
2022+ Porsche 911 GT3: 992 | 4.0L F6
2023+ Porsche 911 GT3 RS: 992 | 4.0L F6
Notes
All Fabspeed products are expected to ship within one week of order, though timelines are often much quicker
Upon checkout please select correct configuration if your vehicle is equipped with GPF, if you are unsure please contact us
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.
Reviews
-+
Reviews
There are no reviews yet.
Only logged in customers who have purchased this product may leave a review.
Stay up to date with the latest product releases, Bulletproof Automotive builds and more. Sign up for our newsletter to receive the most up to date information in the aftermarket tuning world, and bring your build to a whole new level.
![Nitron elec-TRON R3 Coilover Kit with OEM Hydraulic FAL Integration for 991.1 Porsche 911 R / 991.2 GT2 RS, GT3, and GT3 RS [NTCPO036ER3+OEI]](https://bulletproofautomotive.com/wp-content/uploads/2026/05/050826-140-1-450x450.jpg)
![Capristo Valved Exhaust with Mid-Pipe Replacements for 9Y0 & 9Y3 Porsche Cayenne GTS / S / Turbo / Turbo S E-Hybrid [02PO07703040]](https://bulletproofautomotive.com/wp-content/uploads/2025/09/47f2667d-Lamborghini-Urus-Performante-Capristo-Exhaust-2-450x450.jpg)
Reviews
There are no reviews yet.