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Exhaust Package

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DISPLAYING 1 to 6 (of 6 products)
EXHFITTING.997.1.3
Product Information
Product Information
Exhaust Fitting Kit. Porsche 997 Carrera 3.6L / 3.8L MKI

Fits:
Porsche 997 MKI Carrera 3.6L 2005-08
Porsche 997 MKI Carrera S 3.8L 2005-08


Kit Includes:
2 x Header Gaskets (Diagram Ref 3)
2 x Header to Cat Gaskets (Diagram Ref 7)
2 x Cats to Muffler Clamps (Diagram Ref 29)


*Click on the image to see a large parts diagram.

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Related, superseded, cross reference or alternative numbers for comparison.

EXHFITTING.997.1.3
99611110755
99711111300
99711152000

The product you are viewing cross references to these numbers
FSPOR997SPKGP
Product Information
Product Information
Fabspeed STREET Exhaust Performance Package, Polished Stainless Steel Tips.

The Fabspeed Porsche 997 Carrera Performance Package is a comprehensive intake, exhaust developed for Porsche 997 Carrera models from 2005–2008.

Fits:

  • Porsche 997 MK1 Carrera 2 3.6L 2005-08
  • Porsche 997 MK1 Carrera 4 3.6L 2005-08  

Rather than upgrading one component in isolation, the package improves the complete airflow path through the naturally aspirated flat-six engine. It replaces restrictive factory intake and exhaust components with freer-flowing Fabspeed hardware.

Package Includes:

  • Fabspeed Sport Headers
  • Sport Catalytic Converter X-Pipe
  • High-flow sport catalysts
  • Maxflo Performance Mufflers
  • Deluxe Quad-Style Exhaust Tips
  • Carbon Fiber Competition Air Intake System

What This Product Does:
The Performance Package is designed to improve how efficiently air enters the engine and how quickly exhaust gases leave it.

The upgraded intake reduces restriction before the engine, while the headers, X-pipe and mufflers provide a freer-flowing exhaust path.

The ECU calibration then adjusts engine-management parameters to take advantage of the increased airflow.

The package is designed to:

  • Increase horsepower
  • Increase torque
  • Improve throttle response
  • Improve engine breathing
  • Increase cold-air intake flow
  • Reduce exhaust restriction
  • Improve performance throughout the RPM range
  • Produce a deeper and more aggressive exhaust note
  • Increase induction sound
  • Reduce overall component weight

For a mechanically healthy standard car, this package is primarily a performance, sound and response upgrade, rather than a maintenance replacement.

Symptoms Of Wear Or Failure:
The original exhaust components on a 2005–2008 Porsche 997 may deteriorate through age, heat cycling, corrosion and mileage.

Possible symptoms include:

  • Exhaust blowing or ticking
  • Hissing from leaking joints
  • Black soot around exhaust connections
  • Cracked welds
  • Corroded pipes
  • Loose heat shields
  • Internal muffler rattling
  • Catalyst rattling
  • Reduced high-RPM performance
  • Excessive exhaust heat
  • Damaged exhaust brackets
  • Poor exhaust-tip alignment
  • Check Engine Light from catalyst-efficiency faults

A rattling or restricted catalyst may significantly affect engine performance even if the outer catalyst housing appears intact.

Why Replacement / Upgrading Matters:
If the original intake or exhaust components are worn or damaged, replacement can help restore:

  • Correct exhaust sealing
  • Reliable intake airflow
  • Proper engine breathing
  • Correct exhaust routing
  • Secure mounting
  • Consistent throttle response

A leaking exhaust or damaged catalyst can reduce performance and create excessive heat around surrounding components.

A cracked intake component can allow unmetered air into the engine, potentially causing poor running or fault codes.

However, where the factory components remain serviceable, the Fabspeed Performance Package is primarily an upgrade intended to increase airflow, performance, sound and driver response.



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

FSPOR997SPKGP
99711121202
99711121203
99711123202
99711123203
99711121102
99711121103
99711123102
99711123103
99711303302
99711303304
99711303305
99711303306
99711303500
99711303501
99711303503
99711303504
99711303505
99711303402
99711303404
99711303405
99711303406
99711303600
99711303601
99711303603
99711303604
99711303605
99711110401
99711110301

The product you are viewing cross references to these numbers
EXHAUSTKIT29
Product Information
Product Information
Sports Exhaust VALVETROINC + catalytic converter bypass X-Pipes Package



DesignTek Valvetronic sports exhaust system gives smooth and high torque feel to the wheels with the valves opened, Made from high quality 14-16 gauge T304 stainless steel, hydro-formed muffler cases, radiuses stressed relieved with 2000 degree ceramic fibre and stainless steel wool packed free flow mufflers. If you have a factory Porsche PSE (Porsche sport exhaust) this system can replace the original exhaust boxes, you will be able to use the original switches in your car

NOTE: Sports catalytic converters and bypass pipes do not have type approval and are not legally permitted for use on vehicles manufactured after 1st March 2001 in the United Kingdom. They are not MOT compliant and must not be used on public roads. These components are intended for race and track use only. If you are located outside the UK, please consult your local laws and regulations to ensure compliance.

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

EXHAUSTKIT29
3606109976
3606009716

The product you are viewing cross references to these numbers
EXHAUSTKIT36
Product Information
Product Information
DesignTek Sports Exhaust + X-Pipe Sports Cats + Equal Length Headers Package

Fits
Porsche 997.1 Carrera 2 3.6L 2005 - 2008
Porsche 997.1 Carrera 2S 3.8L 2005 - 2008
Porsche 997.1 Carrera 4 3.6L 2005 - 2008
Porsche 997.1 Carrera 4S 3.8L 2005 - 2008

DesignTek sports exhaust system gives smooth Bhp & Torque. Made from high quality 14-16 gauge T304 stainless steel, hydro-formed muffler cases, radiuses stressed relieved with 2000 degree ceramic fiber and stainless steel wool packed free flow mufflers.

DesignTek X-pipe sports racing catalytic converters give a HORSEPOWER and TORQUE gain to all 997 cars. High Quality T304 SS C.N.C. mandrel bent tubing for maximum exhaust flow.

The Equal length headers reduced backpressure and less restriction.
EXHAUSTKIT93
Product Information
Product Information
Sports Exhaust Package 1 (+18 to 27 bhp)



DesignTek 997 Stage 1 Performance package. High Grade stainless steel exhaust system for Porsche 997 Carrera & S 2005>> MK1. 14 - 16 gauge T304 stainless steel.

Includes sports mufflers, Equal length headers, 200 cell sports cats.

Please note: if you have the 3.6 lire engine, you will need to purchase tail pipes #3606409703 as well.

NOTE: Sports catalytic converters and bypass pipes do not have type approval and are not legally permitted for use on vehicles manufactured after 1st March 2001 in the United Kingdom. They are not MOT compliant and must not be used on public roads. These components are intended for race and track use only. If you are located outside the UK, please consult your local laws and regulations to ensure compliance.

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

EXHAUSTKIT93
99711110301
99711110401
99711303302
99711303304
99711303305
99711303306
997113033AX
99711303500
99711303501
99711303504
99711303505
997035AX
99711303402
99711303404
99711303405
99711303406
997113034AX
99711303600
99711303601
99711303603
99711303604
99711303605
997113036AX
99711121102
99711121103
99711123103
99711121202
99711121203
99711123202
99711123203

The product you are viewing cross references to these numbers
EXHAUSTKIT997-1
Product Information
Product Information
Make your 997-1 your own with this complete exhaust package, comprising of vacuum operated valved backboxes, 200-cell sports catalytic converters, and manifold / headers - all manufactured from high quality stainless steel. 

Fits: 
Porsche 997-1 Carrera 3.6L 2005-08* 
Porsche 997-1 Carrera 4 3.6L 2006-08*
Porsche 997-1 Targa 3.6L 2007-08*

Porsche 997-1 Carrera S 3.8L 2005-08
Porsche 997-1 Carrera 4S 3.8L 2006-08
Porsche 997-1 Targa 4S 3.8L 2007-08 

*Please note: If your vehicle is a non-S 3.6L model, replacement Carrera S (3.8L-style) tailpipes will also be required, as the original tailpipes are not compatible with this system. Vehicles originally equipped with Porsche Sports Exhaust (PR XLF) will also require replacement tailpipes, as the factory PSE tailpipes are incompatible. Compatible tailpipes can be found on our website, and selected options may also be suggested when adding this kit to your basket. 

Important Information 

Sports catalytic converters and bypass pipes do not have type approval and are not legally permitted for use on vehicles manufactured after 1st March 2001 in the United Kingdom. They are not MOT compliant and must not be used on public roads. These components are intended for race and track use only. If you are located outside the UK, please consult your local laws and regulations to ensure compliance.  

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

EXHAUSTKIT997-1
99711110301
99711110401
99711110102
99711110202
99711121102
99711121103
99711121202
99711121203
99711123202
99711123203

The product you are viewing cross references to these numbers
DISPLAYING 1 to 6 (of 6 products)
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About Exhaust Package

Exhaust System Packages for Porsche | Performance, Precision & Sound

A well-designed exhaust system package is essential for maintaining your Porsche’s performance, efficiency, and distinctive exhaust tone. These complete systems replace worn or restrictive exhaust components with precision-engineered, high-flow assemblies that restore or enhance power delivery and sound quality.

At Design911, we offer a comprehensive selection of exhaust system packages for Porsche models — from classic 911s to modern GT-series vehicles. Each package includes key components such as silencers, manifolds, catalytic converters, and pipework, designed for optimal gas flow, reduced back pressure, and improved throttle response.

Manufactured from premium stainless steel, Inconel, or titanium, our exhaust kits are built for durability, corrosion resistance, and superior acoustic performance. Whether you’re restoring a vintage air-cooled model or tuning your track-ready GT3, these exhaust systems deliver a perfect balance of reliability, performance, and sound.

What Do Exhaust System Packages Do?

An exhaust system package channels exhaust gases away from the engine efficiently while controlling noise and emissions. A properly designed system ensures optimal engine breathing — improving power, torque, and overall efficiency.

Core Functions:

  • Directs exhaust gases safely from the engine.
  • Reduces back pressure to maximise power output.
  • Controls emissions via catalytic converters and mufflers.
  • Enhances exhaust tone for an authentic Porsche sound.
  • Optimises gas flow for performance and reliability.

An upgraded exhaust system can also provide weight reduction, improved throttle response, and enhanced driving enjoyment.

Why Do Exhaust Systems Fail?

Over time, even the most durable exhaust systems deteriorate due to constant exposure to heat, vibration, and the elements.

Common Causes of Exhaust System Failure Include:
Corrosion and rust, especially on mild steel systems.

  • Cracks or leaks caused by vibration and thermal stress.
  • Worn gaskets or clamps leading to exhaust leaks.
  • Clogged catalytic converters reducing flow and performance.
  • Broken hangers or mounts causing misalignment.

When exhaust components fail, you may notice rattling sounds, loss of performance, strong fumes, or increased fuel consumption — all signs that replacement is needed.

Why Replace or Upgrade Your Exhaust System?

Replacing or upgrading your Porsche’s exhaust system ensures maximum performance, efficiency, and driving enjoyment.

Key Benefits:

  • Restores optimal gas flow and back pressure.
  • Improves horsepower and torque.
  • Enhances sound and throttle response.
  • Reduces weight for improved handling.
  • Prevents leaks and emissions issues.
  • Crafted from corrosion-resistant, high-grade materials.
  • Direct-fit design for Porsche 911, Cayman, Boxster, Panamera, Macan and more.

Whether for performance tuning, restoration, or replacement, Design911’s exhaust system packages deliver the sound, precision, and reliability Porsche owners expect.

Highlights:

  • Complete exhaust system packages for all Porsche models.
  • Includes manifolds, silencers, catalytic converters, and pipes.
  • Manufactured from stainless steel, Inconel, or titanium.
  • Engineered for maximum performance and sound.
  • Precision-fit designs for simple installation.
  • Ideal for performance upgrades or restorations.

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