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
1-IN GTk Active Muffler Line for single in 1975+ Air-Cooled Porsches
1-IN Stock Side Exit
This style bolts up to your single out stock exhaust and exits in the same side-out location as a stock muffler. For 1975-89 911S, 911 SC and Carerra stock exhaust setups. This version provides easy installation without the need for additional modifications. It offers 6 distinct sound levels at the flip of a switch. Tailor your driving experience to match your mood or the driving conditions.
1-IN GT3 Style Center Exit
A more aggressive look and sound, this 1-IN GTk Active Muffler offers a center-out GT3 style exit. This muffler delivers a bit more of an aggressive level of sound and performance than the side-out stock location variant, with the added benefit of a sleek and sporty GT3-style exit design. This muffler offers 5 modes of active sounds
at the touch of a button.
1-IN TEST DRIVE VIDEOS // 1976 STOCK 2.7 FLAT-SIX
Hear the amazing flat-six sounds that the 1-IN GT/k delivers
ONE MUFFLER 5-6 DISTICT SOUND LEVELS
Engineered to deliver the sound of 5-6 mufflers in one package (6 side exit vs 5 center)
SILENCER INSTALLED //
3 Levels of Active Sound
Each mode is tuned to keep a mild idle, while unleashing the roar as the revs climb. With the ability to switch between TOURING, SPORT and YIKES! (with the silencer insert) Porsche enthusiasts can enjoy a versatile and dynamic auditory experience, progressively increasing in aggressiveness and volume, all from this single muffler.
Touring mode delivers a sporty exhaust note
that is great for everyday drives.
The Sport mode delivers a satisfying growl and increased volume compared to the Touring mode. It is ideal
for spirited driving on winding roads.
Fully opens the bypass to deliver a racecar-inspired sound. Installation of the silencer takes a bit of the edge offwhile producing a powerful sound.
while producing a powerful sound.
NO SILENCER //
3 Additional Levels of Active Sound
Remove the silencers to produce a more aggressive and attention-grabbing exhaust. The muffler comes alive with the sound modes of REBEL, ROWDY and YIKES!!!! All 3 modes are accessed at the touch of the wireless switch to match sound to your driving mood or location.
It combines a deep rumble with increased volume, making a bold statement and turning heads wherever you go.
On throttle, it unleashes an aggressive and thunderous exhaust note that commands attention
and announces your arrival.
Fully opens the bypass, bringing out the loudest of all the modes. True racecar-inspired sounds
at the touch of a button!
ENGINEERED for PERFORMANCE + SOUND
We didn't settle duplicating 50 year old designs. Instead we leveraged advanced technology to create a whole new solution to air-cooled muffler design.
In-depth CAD & CFD design process
Advanced design technology delivered new advancements in muffler design
State-of-the-art analysis coupled with thousands of miles of road testing created the perfect blend of performance and sound quality
At Achtung Kraft, we believe in harnessing the power of cutting-edge technology to design the best mufflers. That's why we utilize advanced Computational Fluid Dynamics (CFD) and Computer-Aided Design (CAD) techniques throughout our design process. By leveraging CFD simulations, we can analyze airflow and optimize the internal structure of our mufflers to maximize performance and efficiency. With CFD and CAD and thousands of road testing miles, we can confidently say that our mufflers are not only visually stunning but also deliver unmatched performance and sound quality on the road.
Rebuildable Silencer Technology
We perfected a silencer insert to give better sound options
Advanced silencer design helps reduce noise while maintaing performance
With the ability to easily remove and replace the silencer, you can fine-tune your exhaust system's sound profile to suit your preference. Our rebuildable inserts are crafted from high-quality 304 stainless steel and quality ceramic packing, ensuring durability and longevity for years to come. And if they ever need a refresh, the design allows a simple and easy rebuild with new ceramic packing.
OUR PROPRIETARY COMPUTER IS IN CONTROL
Delivers wireless on-demand control of the GT/k sound modes
Our control module gives you fingertip control of modes with the flip of a wireless switch
Easy to wire control module just needs (+)Power and (-)Ground and it manages the rest. On start-up the module ensures the valves are all closes for the quietest startup. A wireless, battery operated remote can be mounted anywhwere that triggers the muffler modes with the flip of a switch.With our control module, you can customize your exhaust system's sound to match your mood and driving conditions, ensuring that every journey is tailored to perfection.
The 1-in gt/k active muffler line creates all the sound options of 6 mufflers in one, easy to bolt-on package
Search no further for the perfect muffler sound - the GT/k muffler achieves 6 sound options, all at your fingertips!
PRE-ORDER NOW // FOR LATE APRIL 2024 SHIPMENT
PRE-ORDER NOW! WE EXPECT DELIVERY OF THE 2nd BATCH BY END OF May 2024
LAUNCH DISCOUNT AVAILABLE FOR THE FIRST ORDERS.
MORE DETAILS // Achtungkraft.com/GTkMuffler
INSTALL INSTRUCTIONS // GTK_MufflerInstallationGuide.pdf
Solid Rear Valance for Install // https://rennspd.com/product/911-s-sc-rear-valance-extra-long-2/
