Achtung Kraft

Engineered to deliver the best air-cooled sounds and no drone all in a muffler that lets you choose the loudness.

The GTk Active Muffler Line from Ächtung Kraft is designed to deliver the right sound, performance, no drone and personalized choice in the loudness you want for your Air-Cooled Porsche 911 Flat-Six 911, 914, 964 and Carerra.

The GT/k Active Muffler from Achtung Kraft – the perfect addition to your classic Porsche. This high-performance muffler is designed to optimize your Porsche's performance using the latest active muffler technology, while retaining the classic air-cooled Porsche sound that you know and love. Its active valve system allows you to adjust the exhaust note, giving you a deep, rich tone when closed, and an aggressive race car-inspired sound when opened. It's the ultimate way to enhance your Porsche's performance without sacrificing its iconic sound. Our Active GT/k Muffler offers FOUR distinct sound profiles to ensure that drivers have the flexibility to tailor their vehicle's sound to any occasion, driving style, or personal preference. We have tuned each mode to keep a more mild idle, while unleashing the sounds when the revs climb. With the ability to switch between Touring/Sport (with the silencer insert) or Rebel/Rowdy (no insert), Porsche enthusiasts can enjoy a versatile and dynamic auditory experience, progressively increasing in aggressiveness and loudness, all from a single muffler.

TOURING - CLOSED - with Silencer
The Touring sound profile is tailored for those seeking a refined and sophisticated exhaust note. It provides a mellow and subtle sound, allowing for a comfortable and relaxed driving experience. It is perfect for daily commuting, long highway drives, or occasions when a discreet and elegant exhaust note is desired. Touring mode delivers a sporty exhaust note that is great for everyday drives.

SPORT - OPEN - with Silencer
The Sport sound profile offers a more dynamic and spirited exhaust tone, enhancing the driving experience with a noticeable presence. It provides a deeper and throatier sound, amplifying the engine's performance characteristics when over 2k RPM. Sport mode delivers a satisfying growl and increased volume compared to the Touring mode, ideal for spirited driving on winding roads, or when desiring a more engaging driving experience.

REBEL - CLOSED - NO Silencer
For those seeking a more aggressive and attention-grabbing exhaust note, the Rebel sound profile delivers an assertive and powerful tone. It combines a deep rumble with increased volume, making a bold statement and turning heads wherever you go. Rebel mode is suited for those who want their Porsche to be noticed, and prefer a strong and captivating sound, while still maintaining a refined edge.

ROWDY - OPEN - NO Silencer
The Rowdy sound profile represents the pinnacle of intensity and performance-oriented sound. On throttle, it unleashes an aggressive and thunderous exhaust note that demands attention and announces your arrival. Rowdy mode delivers an exhilarating symphony of sound, providing an experience for those who seek the ultimate in auditory excitement. It is perfect for spirited drives, Rallyes, track days, or anytime you want to showcase the raw sound of your flat-six.

Disclaimer: Please note that our products are designed and intended for off-road use only. The use of our products on public roads and highways is prohibited by law in many areas. It is your responsibility to ensure that the use of our products complies with all applicable laws and regulations in your area. Any use of our products on public roads and highways is at your own risk and could result in damage to your vehicle, injury or even death. By purchasing and using our products, you acknowledge that you have read and understood this disclaimer, and you accept all responsibility and liability for any consequences that may arise from the use of our products.

Please note: This part is on special order terms. Delivery time is normally 8-10 weeks. It is not a subject to cancellation or return if not required.


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AKEXH

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Revolutionize your stock Porsche 911 flat-six driving experience.

The GTk Active Muffler Line from Achtung Kraft is the only muffler line on the market to deliver up to 6 levels of sound in one muffler. Don't settle for a one-trick muffler - upgrade now to the best for your 1975 to 1989 Porsche 911, 911S, 911SC and Carerra.

Engineered to bring the right sound and tone to any air-cooled Porsche and delivers a drone-free driving experience.

Elevate your driving experience with the GTk Active Muffler Line from Achtung Kraft. Designed to deliver unparalleled performance and customization, our mufflers are engineered to meet the demands of discerning drivers.

All mufflers come with our state-of-the-art Custom Control Module that allows wireless control of the different sound modes of each muffler.

1-IN versions of the GTk Active Muffler Line feature two variants to suit your specific needs:

Side-Out / Stock Exit Location:
This style bolts up to your single out stock exhaust and exits in the same side-out location as a stock muffler. This version provides easy installation without the need for additional modifications with 6 distinct sound levels at the flip of a switch. You can tailor your driving experience to match your mood or the driving conditions.

Center-Out GT3 Style Exit:
For those seeking a more aggressive look and sound, this 1-IN GTk Active Muffler offers a center-out GT3 style exit. This version delivers a bit more aggressive level of sound and performance as the side-out stock location variant, with the added benefit of a sleek and sporty GT3 style exit design and 5 modes of active sounds at the touch of a button.

No matter which variant you choose, you can count on the GTk Active Muffler Line to deliver uncompromising performance, exceptional sound quality, and unmatched versatility. Take your driving experience to the next level with Achtung Kraft.

Please note: This part is on special order terms. Delivery time is normally 8-10 weeks. It is not a subject to cancellation or return if not required.



Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

AKEXH

The product you are viewing cross references to these numbers