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Design 911 Design 911 supply Porsche parts, Porsche spares and Porsche accessories, to both retail and to the trade. Our Porsche product and accessory range includes brakes, exhausts, tyres, wheels and Porsche panels and interiors. https://www.design91.uk/images/schemaLogo.png https://www.design91.uk/images/schemaLogo.png +443456003478 https://www.design91.uk Facebook Instagram

Exhaust Package

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DISPLAYING 1 to 3 (of 3 products)
FITTINGKIT33
Product Information
Product Information
Exhaust Fitting Kit For Rear Silencers And Centre Silencer.

Fits:
Porsche 991.1 Carrera 2 / Carrera 4 MKI 2012>>2016
Porsche 991.1 Carrera 2S / Carrera 4S MKI 2012>>2016

Kit Includes:
2 x Cat To Silencer Gaskets (Diagram Ref 5)
6 x Cat To Silencer Gasket Bolts (Diagram Ref 45)
6 x Cat To Silencer Gasket Nuts (Diagram Ref 6)
2 x Centre Silencer To Side Silencer Clamps (Diagram Ref 13)
2 x Tailpipe Clamps (Diagram Ref 27)

*Click On The Image To See A Large Parts Diagram*

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Related, superseded, cross reference or alternative numbers for comparison.

FITTINGKIT33
99111148200
99711152000
99711124030
N 01024426
N01024426
90091000303
N91130802
N 91130802

The product you are viewing cross references to these numbers
S-PO991SO-HT/1
Product Information
Product Information
Akrapovic Titanium Exhaust System.

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



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Related, superseded, cross reference or alternative numbers for comparison.

S-PO991SO-HT
99111132101
99111132103
99111132501
99111132503
99111142101
99111142102
99111142103
99111132201
99111132203
99111132601
99111132603
99111142201
99111142203
99111133107
99111133507
99111143104

The product you are viewing cross references to these numbers
PERP91KITXGT3
Product Information
Product Information
CARGRAPHIC Sport Exhaust System with GT3-look tailpipe center outlet, cylinder-head back with exhaust valves.
SOUND / SUPER SOUND Version

Fits:
Porsche 991.1 Carrera 2 / 4 3,4L
Porsche 991.1 Carrera 2S / 4S / GTS 3,8L

Consisting of:
•  CARGRAPHIC Sport Manifold Set with 2" / 50,80mm primaries with 2x 200cpsi Ø130mm HD Tri-metal catalytic converters
•  CARGRAPHIC Center Silencer Replacement, 2-piece X-pipe construction, open with merged gas flow and 2 integrated exhaust valves
•  CARGRAPHIC Wheel-arch silencer set with flex-pipe connection
•  CARGRAPHIC 100mm / 4,0" Sport Double-end tailpipes, GT3-Look, round, slash-cut with stainless steel liner made from SS304L stainless steel - Version: Carbon-Matt

SOUND / SUPER SOUND Export Version

SOUND / SUPER SOUND Version - switchable dual mode:

•  Valves closed: Quieter tuned enhanced sporty SOUND note, practical pleasant cruising mode
•  Valves open: Aggressive amplified enhanced SUPER SOUND note, sharper, crisper and volume increasing freer flowing mode - also accompanied with burbling and backfire with every application of the accelerator pedal

NO DRONE OR RESONATION even with further CARGRAPHIC exhaust components

Features:
  Perfectly matched exhaust components
  Performance manifold set with optimized exhaust flow
  Fully OBD2 compliant - No CEL / Check-Engine Light
  Absorptive silencer design
  CNC mandrel-bent pipework, which allows exhaust pipes with constant diameter.
  Integrated vacuum exhaust valves
  Fully made from SS304L stainless steel
  High performance components, dyno tested
  Olive- and slide connections enables easy installation and perfect adjustment
  Aeroquip fittings allow heat expansion without cracking
  Reinforced laser-cut brackets
  Exhaust valve specification as used by OE / factory manufacturers
  Reduced backpressure due to freer flowing
  Reduced operating temperature
  Maximized performance
  Improved throttle response, freer revving
  Improved enhanced acoustics with no drone, resonation or vibration
  Improved low level tone with sharper, crisper and volume increasing sound with revs
  Model specific tuned sound still in keeping with the marque
  Weight reduction

PERFORMANCE - Made in Germany
20KW(27PS) more power and 24Nm additional torque

Attention:
  A corresponding body conversion kit with matching end pipe cut-out is required for installation
  Porsche 991.1 Carrera S and GTS 3.8l models: The use of the factory installed valve control (also PSE) is still possible. Optionally, our performance valve control can be used, which also offers the function of opening the exhaust valves permanently.
  Porsche 991.1 Carrera 3,4l models: Require our separately available performance valve control, with which the exhaust gas valves are permanently opened or automatically controlled according to the rpm. Alternatively, it is also possible to retrofit and use the control unit of the Porsche Sport exhaust system (PSA / SAGA).

CARGRAPHIC SS304L lightweight stainless steel tailpipe trims are optionally available in the following finishes:
  Stainless steel mirror polished
  Matt-Black Thermopaint
  Gloss-Black enamelled
  Visual-Carbon Matt-Finish with stainless steel liner
  Visual-Carbon Gloss-Finish with stainless steel liner
  Visual-Carbon Gloss-Finish with perforated insert


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

PERP91KITXGT3
99104420003

The product you are viewing cross references to these numbers
DISPLAYING 1 to 3 (of 3 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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