2 IN / 2 OUT
Sport Silencers

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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Exhaust conversion set, free-flow, with loose 84 mm tail pipes.



Fits:
Porsche 911 2.7L / 3.0L 08/1973-07/1983

Exhaust System Double End Pipe
Heating / Cooling with heating
Material Stainless Steel
Quantity Unit Kit
Surface Blank

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1620000110

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Exhaust conversion set, free-flow, with loose 84 mm tail pipes.

Fits:
Porsche 911 3.2L 08/1983-07/1989

Material: Stainless Steel
Number of Inlets / Outlets: 2/2
Surface: Blank

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1620000210

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Rear exhaust box, double Ø76mm polished stainless steel tail pipes.



Fits:
Porsche 911 T / E / S (not mech. injection) 2.0-2.4L 01/1963-07/1973
Porsche 911 S (mech. injection) 2.4L 08/1971-07/1973

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91122092520DUAL

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Racing exhaust with bolt-on inlet flanges. Stainless steel. Double End Pipe. Tail pipes diameter Ø63.50 mm



Fits:
Porsche 911 S (mech. injection) 2.4L 08/1971-07/1973
Porsche 911 T/E/S (not mech.injection) 2.0L-2.4L 01/1963-12/1973

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1620801800

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Racing exhaust with bolt-on inlet flanges, Ø 63,5 mm tail pipes



This exhaust has a heat resistant paint up 450°C.
This prevent paint to peel off after a short period by high temperature. Can be used with SSI heat exchangers also for impact bumper cars.

Tail pipes diameter of Ø63,5 mm.

Fits:
Porsche 911 S (mech. injection) 2.4L 08/1971-07/1973
Porsche 911 T/E/S (not mech injection) 2.0L-2.4L 01/1963-12/1973

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1620801700

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"GT3 Style" Rear exhaust with dual center outlet pipes, Ø 63 mm, Stainless steel.



Fits:
Porsche 911 2.0-2.4L 01/1963-07/1973
Porsche 914/6 2.0L 11/1969-12/1973

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1620612400

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Rear exhaust, Sport, Stainless steel, Dual 70 mm outlet pipe. Heat exchanger conversion.



Fits:
Porsche 911 Carrera Sport 3.2L 08/1983-07/1989

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1620611700

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Rear exhaust box 2 in and 2 out. Ø60mm centre tail pipes. Painted aluminized steel.



Fits:
Porsche 911 T / E / S 2.0-2.4L 1964-73

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91122092515DUAL

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Rear exhaust box 2 in and 2 out. Ø50mm centre tail pipes.
Made of steel with grey heat resistant paint.



Fits:
Porsche 911 T / E / S 2.0-2.4L 1964-73
Porsche 911 / S / CARRERA 2.7L 1974-76

Exhaust System Double End Pipe
Length [mm] 230
Pipe Ø [mm] 50
Surface Painted in heat resistant paint

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91122092510DUAL

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Rear exhaust box 2 in and 2 out. Ø50mm centre tail pipes.  Stainless steel, polished



Fits:
Porsche 911 T / E / S 2.0-2.4L 1964-73
Porsche 911 / S / CARRERA 2.7L 1974-76

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91122092510DUALS

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