All Silencers / Mufflers
- Porsche 991 Carrera C2 3.4L (350Bhp)
- Porsche 991 Carrera C2S 3.8L (400Bhp)
- Porsche 991 Carrera C4 3.4L (350Bhp)
- Porsche 991 Carrera C4S 3.8L (400Bhp)
- Porsche 991 Turbo 3.8L (520bhp)
- Porsche 991 Turbo S 3.8L (560Bhp)
- Porsche 991 R 4.0L (500 Bhp)
- Porsche 991 GT3 3.8L (475Bhp)
- Porsche 991 GT3 RS 4.0L (500Bhp)

- Porsche 991 Carrera C2 3.4L (350Bhp)
- Porsche 991 Carrera C2S 3.8L (400Bhp)
- Porsche 991 Carrera C4 3.4L (350Bhp)
- Porsche 991 Carrera C4S 3.8L (400Bhp)
Race Exhaust Muffler system with Bypass X-Pipe with Opening & Closing Valves.
DesignTek® exhausts are built for the sound and performance to enhance your Porsche 991S. This kit includes rear x-pipe with valves, side bypass pipes and carbon fibre finish tail pipes
High-Performance Rear Exhaust with sound switch:
● Push the sound-button between:
Switch closed: Deep Sports Sound
Switch opened: Perfect Racing Sports Sound
Fits:
Porsche 991 Carrera
Porsche 991 Carrera S
NOTE: * Compatible with the factory catalytic converter
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36060099S1
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This kit is comprised of the following items:




- Porsche 991 Carrera C2 3.4L (350Bhp)
- Porsche 991 Carrera C2S 3.8L (400Bhp)
- Porsche 991 Carrera C4 3.4L (350Bhp)
- Porsche 991 Carrera C4S 3.8L (400Bhp)
DesignTek® exhausts are built for the sound and performance to enhance your Porsche 991S. This kit includes rear centre box with valves, side muffler boxes and chrime plated finish tail pipes
High-Performance Rear Exhaust with sound switch:
● Push the sound-button between:
Switch closed: Deep Sports Sound
Switch opened: Perfect Racing Sports Sound
Fits:
Fits:
Porsche 991 Carrera
Porsche 991 Carrera S
NOTE: * Compatible with the factory catalytic converter
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36060099S2
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This kit is comprised of the following items:





- Porsche 991 Carrera C2 3.4L (350Bhp)
- Porsche 991 Carrera C2S 3.8L (400Bhp)
- Porsche 991 Carrera C4 3.4L (350Bhp)
- Porsche 991 Carrera C4S 3.8L (400Bhp)
Fits:
Porsche 911 (991) Carrera /S/4/4S/GTS 2012>>
Porsche 911 (991) Carrera /S/4/4S/GTS 2012>> CABRIO
It's a challenge to develop an aftermarket exhaust for the great 911. The Akrapovič engineers have prepared a superb system with a dual nature. By using the optional Akrapovic sound kit, the driver can fully control the exhaust valves, which are controlled by the car's electronics if no optional part is used. When the valves are closed, the 911 sounds deeper than stock, but not louder. When the valves are open, expect a completely opposite, pure racing sound, with adrenaline-pumping bangs. Keeping the drone effect away was one of the main tasks. The Slip-On is made of special heat-resistant durable titanium alloy, with computer-designed premufflers, main mufflers, and pipes to deliver more power, more torque, weight reduction, and improved throttle reponse.
TECHNICAL DATA
Maximum power:
- kW: plus 13.2 at 4050 rpm
- HP (m): plus 18 at 4050 rpm
- HP (i): plus 17.7 at 4050 rpm
Maximum torque:
- Nm: plus 35 at 4000 rpm
- lb-ft: plus 25.8 at 4000 rpm
Weight:
- minus 8.8 kg / 19.4 lb
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S-PO991SO-HT
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- Porsche 997 GT3 2007>>
- Porsche 997 MKII GT3 2010>>
- Porsche 991 GT3 3.8L (475Bhp)
- Porsche 991 GT3 RS 4.0L (500Bhp)
- Porsche 991 GT3 4.0L (500 Bhp) / GT3 RS 4.0L (520 Bhp)
Fits:
Porsche 997.1 GT3 3.6L 2007>>
Porsche 997.2 GT3 3.8L 2010>>
Porsche 991 (911) GT3 2014>>
Porsche 991 (911) GT3 RS 2014>>
Akrapovič's Slip-On Line represents the first step in the exhaust system tuning process and the muffler can easily be installed onto the Porsche GT3's original system. Built from hi-grade titanium and finished with two eye-catching double round tailpipes, this entry system makes the GT3 more powerful and lighter, and gives the car that unique Akrapovič sound. Designed to make the car stand out from the crowd and increase its appeal even more, the visual delight of the Akrapovič Slip-On can be further enhanced with the addition of an optional carbon- fibre rear diffuser. Beautifully handcrafted from the finest materials and designed to enrich the exclusive look of the titanium exhaust system, the diffuser is a must-have extra for any discerning owner.
TECHNICAL DATA
* measured with: Porsche 911 GT3 RS (991) 2014
Maximum power:
- kW: plus 4.5 at 7800 rpm
- HP (m): plus 6.1 at 7800 rpm
- HP (i): plus 6 at 7800 rpm
Maximum torque:
- Nm: plus 4.9 at 8100 rpm
- lb-ft: plus 3.6 at 8100 rpm
Weight:
- minus 1.1 kg / 2.4 lb
*** Mandatory Extra Part Required
Tail pipe set (Titanium) - part no TP-PO991RS/H/T
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MTP-PO997GT3H
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- Porsche 991 Turbo 3.8L (520bhp)
- Porsche 991 Turbo S 3.8L (560Bhp)
Fits:
Porsche 991 (911) Turbo/Turbo S 2014>>
The Akrapovič Slip-On Line for the Porsche 911 Turbo / Turbo S is the first stage in the exhaust tuning process and gives this already outstanding car a further step in performance. Made from a high-grade titanium alloy and finished with exquisitely handcrafted carbon fibre and titanium tailpipes, the Slip-On Line reduces weight to aid with handling. Akrapovič's sound engineers have also created a deep and unique sound to make the Porsche 911 Turbo / Turbo S stand out even more. The Slip-On Line can also be used in conjunction with the optional Akrapovič link pipes—with or without cats—which can be added to the system to take the performance to another level. The Slip-On Line is superbly finished with a coating to give greater durability, without altering the look or performance of the system.
TECHNICAL DATA
** measured with: Porsche 911 Turbo/Turbo S (991) 2014
Maximum power:
- kW : plus 5.8 at 3300 rpm
- HP (m) : plus 7.9 at 3300 rpm
- HP (i) : plus 7.8 at 3300 rpm
Maximum torque:
- Nm : plus 14.8 at 2600 rpm
- lb-ft : plus 10.9 at 2600 rpm
Weight:
- minus 6.4 kg / 14.1 lb
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S-PO991TSO-HT
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- Porsche 991 GT3 3.8L (475Bhp)

Superb dual-tone sports car sound; throaty and deep at idle and medium speeds
FEATURES:
• Fits: all Porsche 991 GT3 vehicles 2014+
• Mini Maxflo mufflers are radius stress relieved, hydro-formed cases that are pulse TIG welded using 2000 degree ceramic fiber and stainless steel wool packing.
• Constructed from high quality 14-16 gauge, C.N.C. mandrel bent T304L stainless steel
• Retains Sport Mode button functionality when used in conjunction with factory side mufflers
• Simple bolt-on installation
• All Fabspeed performance products are backed by the Fabspeed Lifetime Limited Warranty
Please note: This is a special-order item manufactured to order. In some cases, please allow 4 – 5 weeks for the delivery. Special order items cannot be cancelled from this supplier once your order has been placed.
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FSPOR991GT3CMAX
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- Porsche 991 Carrera C2 3.4L (350Bhp)
- Porsche 991 Carrera C2S 3.8L (400Bhp)
- Porsche 991 Carrera C4 3.4L (350Bhp)
- Porsche 991 Carrera C4S 3.8L (400Bhp)

Fits:
Porsche 991 Carrera 3.4L
Porsche 991 Carrera S 3.8L
This front Muffler X-Pipe exhaust is also interchangeable with the stock parts. The design deletes the front mufflers for a sports and race sound. You can keep all original exhaust fittings as the OEM fitting the same, like the factory centre muffler with its 3rd chamber, this floats behind the exhaust tip for a full stock look.
High-Performance Rear Exhaust with sound switch:
● Push the sound-button between:
Switch closed: Deep Sports Turbo Sound
Switch opened: Perfect Racing Sports Turbo Sound
Please note the remote controlers do not come with batteries. You will have to source them at your own cost. The type is CR2025
For Wiring Diagram please CLICK HERE
Click 'Zoom in' for large parts diagram.
3606009921 replace No 7.
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3606009921
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- Porsche 991 Carrera C2S 3.8L (400Bhp)
- Porsche 991 Carrera C4S 3.8L (400Bhp)
DesignTek front X-Pipe exhaust with valvetronic switch Porsche 991 S 3.8L

Fits:
Porsche 991 Carrera 3.8L S
This front X-Pipe exhaust is also interchangeable with the stock parts. The design deletes the front mufflers for a sports and race sound. You can keep all original exhaust fittings as the OEM fitting the same, like the factory centre muffler with its 3rd chamber, this floats behind the exhaust tip for a full stock look.
High-Performance Rear Exhaust with sound switch:
● Push the sound-button between:
Switch closed: Deep Sports Turbo Sound
Switch opened: Perfect Racing Sports Turbo Sound
Please note the remote controlers do not come with batteries. You will have to source them at your own cost. The type is CR2025
For Wiring Diagram please CLICK HERE
Click 'Zoom in' for large parts diagram.
3606009911 replace No 7.
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3606009911
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- Porsche 991 Turbo 3.8L (520bhp)
- Porsche 991 Turbo S 3.8L (560Bhp)
- Porsche 991 Targa 4S 3.0L (420 Bhp)
- Porsche 991 Turbo Coupe 3.8L (540 Bhp)
- Porsche 991 Turbo S Coupe 3.8L (580 Bhp)
- Porsche 991 Turbo Cabriolet 3.8L (540 Bhp)
- Porsche 991 Turbo S Cabriolet 3.8L (580 Bhp)
DesignTek Titanium sports exhaust system.

Fits:
Porsche 991.1 Turbo
Porsche 991.2 Turbo
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3601173170
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- Porsche 991 GT3 3.8L (475Bhp)
Replaces factory center muffler for improved flow, increased power, and aggressive sound.
FEATURES:
• Fits all Porsche 991 GT3 vehicles 2014+
• Saves 10 lbs from the rear of the vehicle
• Retains Sport Mode control button when used with factory side mufflers
• 14-16ga T304 Stainless Steel construction
• Includes 4" Deluxe Tips in Polished or Matte Black finish
• All Fabspeed performance products are backed by the Fabspeed Lifetime Limited Warranty
Please note: This is a special-order item manufactured to order. In some cases, please allow 4 – 5 weeks for the delivery. Special order items cannot be cancelled from this supplier once your order has been placed.
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FSPOR991GT3CMB
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- Porsche 991 Carrera C2 3.4L (350Bhp)
- Porsche 991 Carrera C2S 3.8L (400Bhp)
- Porsche 991 Carrera C4 3.4L (350Bhp)
- Porsche 991 Carrera C4S 3.8L (400Bhp)

The 991 Carrera Center Muffler Bypass X-Pipe makes a great compliment to either the factory side mufflers or to Fabspeed's Maxflo Performance Side Exhaust System.
NOTE: For vehicles equipped with Porsche Sport Exhaust (PSE), this product replaces the factory center muffler PSE system. As such, the "exhaust sound option button" will no longer be functional.
FEATURES:
• Fits: all Porsche 991 Carrera vehicles 2012+
• Greatly improves horsepower and torque
• Saves 12 lbs. versus the factory center muffler
• Dramatic improvement in sports car sound and power throughout the RPM range
• Constructed from high-quality 14-16 gauge C.N.C. mandrel-bent T304L stainless steel for optimum flow and maximum durability
• Direct bolt-on replacements for the factory center muffler
• Fabspeed Lifetime Limited Warranty.
Please note: This is a special-order item manufactured to order. In some cases, please allow 4 – 5 weeks for the delivery. Special order items cannot be cancelled from this supplier once your order has been placed.
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FSPOR991CMBX
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- Porsche 991 R 4.0L (500 Bhp)
- Porsche 991 GT3 3.8L (475Bhp)
- Porsche 991 GT3 RS 4.0L (500Bhp)
- Porsche 991 GT3 4.0L (500 Bhp) / GT3 RS 4.0L (520 Bhp)

High quality SUS304 stainless steel exhaust rear section compatible with OE rear mufflers. Complimented by black chrome tail pipe in ⌀89mm
Designed for maximum flow and no restriction.
Reduced back pressure and better scavenging. More torque and horsepower across the RPM band.
Fits:
Porsche 991 GT3 3.8L 476 Bhp 2013 - 2017 (A175 engine)
Porsche 991 GT3 RS 4.0L 507 Bhp 2013 - 2017 (A175 engine)
Porsche 911 R 4.0L 507Bhp 2014-2017 (A176 engine)
Please note: This will not fit cars:
- with engine codes DNSA / DNSB - 4.0L with 520 Bhp
- released after 06/2017 with engine codes DGG / DGGA / DGGB
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3606609136
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- Porsche 991 Carrera C2 3.4L (350Bhp)
- Porsche 991 Carrera C2S 3.8L (400Bhp)
- Porsche 991 Carrera C4 3.4L (350Bhp)
- Porsche 991 Carrera C4S 3.8L (400Bhp)

Porsche 991.1 S 3.8L
The silencers in this exhaust are linked to one another, creating a greater balance between the two silencers which improves flow, performance and provides a sports sound. It is a performance exhaust with a louder note and boasts significant power gains over OE system. This is race / offroad use only.





- Porsche 991 Carrera C2S 3.8L (400Bhp)
- Porsche 991 Carrera C4S 3.8L (400Bhp)

Fits:
Porsche 991 C2S / C4S
Click 'Zoom in' for large parts diagram.
3606009104 replaces No 17.
Please note: sports catalytic converters or bypass pipes do have type approval and may not be legally installed on vehicles manufactured after 1st March 2001. They can not be used on a public road and are not MOT compliant, they are designed for race and track cars only.
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3606009104
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- Porsche 991 GT3 3.8L (475Bhp)

Fabspeed's 991 GT3 Side Muffler Bypass Pipes are also available without valves for those that desire maximum weight savings and performance, and do not need the sound level control.
FEATURES:
• Fits: all Porsche 991 GT3 vehicles (2013+)
• Saves 34lbs from the rear of the vehicle
• Replicates aggressive CUP car sound for the street
• 14-16ga T304 Stainless Steel construction
• Simple bolt-on installation
• All Fabspeed performance products are backed by the Fabspeed Lifetime Limited Warranty
Please note: This is a special-order item manufactured to order. In some cases, please allow 4 – 5 weeks for the delivery. Special order items cannot be cancelled from this supplier once your order has been placed.
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FSPOR991GT3SMB
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- Porsche 991 Turbo 3.8L (520bhp)
- Porsche 991 Turbo S 3.8L (560Bhp)
High performance free-flowing X-pipe with sport catalytic converters and tips replaces the heavy and restrictive factory rear mufflers and catalytic converters for improved power and fantastic sound; includes 200-cell HJS Sport Cats and Deluxe Quad-Style Tips.
FEATURES:
• Fits all 991 Turbo / Turbo S vehicles (2013+)
• NOTE: Fabspeed's Supersport X-Pipe RACE application includes cat bypass pipes with O2 bungs in the factory position, and is recommended for Off-Road Track Use Only
• Dramatic improvement in sports car sound and power throughout the RPM range
• Includes Deluxe Quad Style Tips in your choice of finish; also available with polished GT2 Style Tips
• Constructed from high-quality 14-16ga C.N.C. mandrel-bent T304L stainless steel for optimum flow and maximum durability
• Simple bolt-on installation; no cutting or welding required
• All Fabspeed performance products are backed by the Fabspeed Lifetime Limited Warranty
Fabspeed's 200-cell high-flow catalytic converters are not C.A.R.B. certified and are for Off-Road Use ONLY in the state of California
Please note: This is a special-order item manufactured to order. In some cases, please allow 4 – 5 weeks for the delivery. Special order items cannot be cancelled from this supplier once your order has been placed.
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FSPOR991TSSRX
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Title: Upgrading Your Porsche's Exhaust System: Original Porsche vs. Aftermarket Mufflers and Sports Exhaust
Keywords: Porsche, exhaust mufflers, sports exhaust, upgrade, replacement, technical specifications, known issues, Design911, professional advice
Summary:
Original Porsche Exhaust Mufflers:
Designed and manufactured by Porsche for specific models
Engineered to meet stringent quality standards
Precisely tuned for optimal performance and sound
Maintains the authenticity and originality of your Porsche
Compatible with existing components and systems
Aftermarket Exhaust Mufflers:
Produced by third-party manufacturers specializing in performance upgrades
Offer a wide range of options for customization
Can enhance exhaust note, performance, and aesthetics
May provide better flow dynamics for improved engine efficiency
Consider compatibility and fitment with your Porsche model
Sports Exhaust Systems:
Designed to maximize performance and enhance the driving experience
Typically include larger diameter pipes, sportier mufflers, and optimized airflow
Offer increased horsepower and torque
Produce a more aggressive and exhilarating exhaust sound
Check local regulations regarding noise restrictions
When considering purchasing an exhaust muffler or sports exhaust for your Porsche, several factors should be considered. Firstly, determine your specific requirements, whether it's a slight improvement in sound or a significant performance boost. Research the technical specifications and compatibility of the chosen exhaust system with your Porsche model. Consider your budget and the reputation of the manufacturer or retailer. It's crucial to ensure the product is backed by warranties or guarantees.
At Design911, we can assist you in finding the correct exhaust part for your Porsche. Our knowledgeable team can offer professional advice based on your requirements and guide you through the selection process. We stock a wide range of original Porsche parts as well as reputable aftermarket options, ensuring you have access to high-quality choices. Trust Design911 to help you enhance your Porsche's performance and provide an unmatched driving experience.
Note: The summary provided above is a general overview of the benefits and considerations related to upgrading the exhaust system of a Porsche vehicle. It's always recommended to consult with a professional and consider individual vehicle specifications and regulations before making any modifications.