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Porsche > 997 (911) MK1 2005-2008 > 997 MK1 Carrera 2S 3.8L 2005-08 > Exhausts >

Sport Silencers / Mufflers

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DISPLAYING 1 to 9 (of 9 products)
Sports Exhaust & catalytic converter bypass X-Pipes Package Porsche 997 C2 / C4 / C4S - 3606109976, 3606009716
1
Sports Exhaust & catalytic converter bypass X-Pipes Package Porsche 997 C2 / C4 / C4S
EXHAUSTKIT29
Product Information
Product Information
Sports Exhaust VALVETROINC + catalytic converter bypass X-Pipes Package
designtek

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Related, superseded, cross reference or alternative numbers for comparison.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
Sports Exhaust With Headers & Cats Package 1 (+18 to 27 bhp) Porsche 997 C2 / C4 - 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
5
Sports Exhaust With Headers & Cats Package 1 (+18 to 27 bhp) Porsche 997 C2 / C4
EXHAUSTKIT93
Product Information
Product Information
Sports Exhaust Package 1 (+18 to 27 bhp)

designtek

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
Exhaust muffler / silencer set 'Sports Sound Version'. Porsche 997.1 - 97300SEXP, 1620609810, 97.300SEXP, 99711121203, 99711123203, 99711121202, 99711123202, 99711141204, 99711143204, 99711110500, 99711110600, 99711161103, 99711121103 - 97.300SEXP, 1620609810
3
Exhaust muffler / silencer set "Sports Sound Version". Porsche 997.1
99722097300SEXP
Product Information
Product Information
Exhaust muffler / silencer set "Sports Sound Version"

danskmotorsport

Fits:
Porsche 997 3.8L C2S /C4S 08/2004-07/2008
Porsche 997 3.6L C2 /C4 08/2004-07/2008 *** please also use tail pipe 99711197901S
Output flange 2.25" / 58mm


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Related, superseded, cross reference or alternative numbers for comparison.

99722097300SEXP
97300SEXP
1620609810
97.300SEXP
99711121203
99711123203
99711121202
99711123202
99711141204
99711143204
99711110500
99711110600
99711161103
99711121103

The product you are viewing cross references to these numbers
Exhaust muffler / silencer set. Porsche 997.1 - 97300S, 1620602110, 97.300S, 99711121203, 99711123203, 99711121202, 99711123202, 99711141204, 99711143204, 99711110500, 99711110600, 99711161103, 99711121103 - 97.300S, 1620602110
4
Exhaust muffler / silencer set. Porsche 997.1
99722097300S
Product Information
Product Information
Rear sport exhaust set - left and right.
Polished stainless steel.

danskmotorsport

Fits:
Porsche 997 3.8L C2S /C4S 08/2004-07/2008
Porsche 997 3.6L C2 /C4 08/2004-07/2008 *** please also use tail pipe 99711197901S
Output flange 2.25" / 58mm


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

99722097300S
97300S
1620602110
97.300S
99711121203
99711123203
99711121202
99711123202
99711141204
99711143204
99711110500
99711110600
99711161103
99711121103

The product you are viewing cross references to these numbers
Exhaust muffler / silencer Sport OE Style. Porsche 997.1 - 1620601910, 97330S, 97.330S, 99711121203, 99711123203, 99711121202, 99711123202, 99711141204, 99711143204, 99711110500, 99711110600, 99711161103, 99711121103 - 1620601910
5
Exhaust muffler / silencer Sport OE Style. Porsche 997.1
99722097330S
Product Information
Product Information
Replacement Rear sport exhaust set OE style. Bead blasted stainless steel.

danskmotorsport

Fits:
Porsche 997 3.8L C2S /C4S 08/2004-07/2008
Porsche 997 3.6L C2 /C4 08/2004-07/2008 *** please also use tail pipe 99711197901S
Output flange 2.25" / 58mm


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

99722097330S
1620601910
97330S
97.330S
99711121203
99711123203
99711121202
99711123202
99711141204
99711143204
99711110500
99711110600
99711161103
99711121103

The product you are viewing cross references to these numbers
Exhaust Muffler / Silencer Sports SUPREMACY DesignTek for Porsche 997 PAIR - 99711197901S, 3606409703, 99711121203, 99711123203, 99711141204, 99711143204, 99711110500, 99711110600, 99711161103, 99711121103
4
Exhaust Muffler / Silencer Sports SUPREMACY DesignTek for Porsche 997 PAIR
3606009715
Product Information
Product Information
DesignTek Sports SUPREMACY system exhaust made from High Grade stainless steel.

Made in the UK
gb designtek

Fits:
Porsche 997 C2, C4, C2S, C4S

Please Note: For standard 997 3.6L models the factory tail pipe will not fit. Use 997 S tail pipes or after-market tail pipes.
Output flange 2.25" / 58mm

This sports exhaust set conveys the sound of power, presence and natural sporting presence the 911 needs. Built with a large diameter chamber bypass pipe the engine note changes with more aggressive throttle.

Made from 14 - 16 gauge T304SS, polished mirror finish, Designed to give an open throttle sound and more aggressive at medium and high speeds.

We also have a wide selection of stainless steel tail pipes.

Sound = deeper than the factory standard exhaust but not too loud



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

3606009715
99711197901S
3606409703
99711121203
99711123203
99711141204
99711143204
99711110500
99711110600
99711161103
99711121103

The product you are viewing cross references to these numbers
Exhaust Muffler / Silencer Sports System DesignTek for Porsche 997.1 - 3606009702, 99711197901S, 99711121102, 99711121103, 99711123102, 99711123103, 99711121202, 99711121203, 99711123202, 99711123203, 99711141103, 99711141104, 99711143103, 99711143104, 99711141203, 99711141204, 99711143203, 99711143204
10
Exhaust Muffler / Silencer Sports System DesignTek for Porsche 997.1
3606009702
Product Information
Product Information
DesignTek Sports Exhaust made from High Grade stainless steel.

Fits:
Porsche 997.1 C2 / C2S / C4 / C4S 2005-08

PLEASE NOTE
This exhaust system will accept 3.8L tail pipe straight on
•  If your car is 3.6L you will need DesignTek 3606409703 tail pipes
Output flange 2.25" / 58mm
•   If you are fitting this exhaust system to a vehicle originally fitted with Porsche PSE, you will also need our 3606409703 tailpipes as the PSE silencers exit offset into the tailpipes.

Made from 14 - 16 gauge T304S with a mirrored polished finish, Giving a 8-10 bhp that you can really feel, Superb sports car sound, throaty at idle and medium speeds.

DECIBEL READINGS
IDLE : 76DBS
MAXIMUM: 102DBS

To view the BHP and torque gains on dyno results CLICK HERE

For Fitting Instructions CLICK HERE







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

3606009702
3606009702
99711197901S
99711121102
99711121103
99711123102
99711123103
99711121202
99711121203
99711123202
99711123203
99711141103
99711141104
99711143103
99711143104
99711141203
99711141204
99711143203
99711143204

The product you are viewing cross references to these numbers
Exhaust Muffler / Silencer Titanium DesignTek for Porsche 997 - 99711121102, 99711121103, 99711123102, 99711123103, 99711121202, 99711121203, 99711123202, 99711123203
1
Exhaust Muffler / Silencer Titanium DesignTek for Porsche 997
3606009736
Product Information
Product Information
Exhaust Muffler / Silencer Titanium


Fits:
Porsche 997 Carrera
Porsche 997 Carrera S

DesignTek Titanium Super light weight Sport exhaust system. Weight Just 6.70Kg Original Porsche system weight 44lbs.
DesignTek Titanium Exhaust has much lower back pressure and more BHP power with a great deep race car like sound.





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

3606009736
99711121102
99711121103
99711123102
99711123103
99711121202
99711121203
99711123202
99711123203

The product you are viewing cross references to these numbers
Milltek Sports Exhaust Muffler / Silencer Rear Box Cup Design. Porsche 997 Carrera - 99711121203, 99711123203, 99711141204, 99711143204, 99711110500, 99711110600, 99711161103, 99711121103 - SSXPO031
1
Milltek Sports Exhaust Muffler / Silencer Rear Box Cup Design. Porsche 997 Carrera
SSXPO031
Product Information
Product Information
Milltek Sport Cup Design Rear Silencers To Fitted With Factory Tail Pipe Ends.
Cup Version (Offers A Powerful GT3-Like Sound).
Uses OE Tips.

Pipe Diameter: 63.50mm (2.50")

Fits:
Porsche 997 Carrera S 3.8L (C2S & C4S) 2005>>2008
Porsche 997 Carrera 3.6L 2005>>2008

Parts Assembly:
MSPO157 LH Adaptor
MSPO158 RH Adaptor
MSPO200 LH 'Cup' Silencer
MSPO201 RH 'Cup' Silencer
MSPO145 LH Tailpipe Inlet
MSPO146 RH Tailpipe Inlet

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

SSXPO031
99711121203
99711123203
99711141204
99711143204
99711110500
99711110600
99711161103
99711121103

The product you are viewing cross references to these numbers
DISPLAYING 1 to 9 (of 9 products)
Also found on these pages
About Sport Silencers / Mufflers

Porsche Sport Silencers & Mufflers - Performance Sound & Exhaust Upgrades

Sport Silencers / Mufflers are designed to enhance the sound, performance, and driving character of your Porsche by improving exhaust gas flow and delivering a more engaging exhaust note. Compared to standard exhaust silencers, sports mufflers reduce restriction, sharpen throttle response, and provide a sportier tone that better reflects Porsche’s performance heritage.

Available from Design911, this category includes both genuine Porsche sport exhaust components and high-quality aftermarket performance mufflers, giving owners the choice between factory-engineered authenticity and performance-focused customisation.

What Do Sport Silencers / Mufflers Do?

Sport silencers optimise exhaust flow while enhancing sound quality.

Core Functions:

  • Reduce exhaust backpressure for improved engine breathing.
  • Enhance throttle response and power delivery.
  • Produce a deeper, sportier exhaust note.
  • Improve exhaust efficiency and flow dynamics.
  • Enhance the overall driving experience.

A well-designed sports muffler balances performance gains with refined sound control.

Why Do Standard Exhaust Silencers Fail or Fall Short?

Standard exhaust mufflers are designed primarily for noise reduction, emissions compliance, and longevity. Over time, common issues include:

  • Internal corrosion from condensation and heat cycles.
  • Restrictive baffling limiting exhaust flow.
  • Dull or muted exhaust sound.
  • Internal baffle breakdown causing rattles.
  • Reduced efficiency when paired with performance upgrades.

As these components age, both performance and sound quality can deteriorate.

Why Upgrade to Sport Silencers / Mufflers?

Sport silencers are engineered to improve both performance and auditory feedback.

Upgrade Benefits:

  • Improved exhaust flow and reduced restriction.
  • Enhanced exhaust sound without excessive drone.
  • Increased driving engagement and responsiveness.
  • Available in OEM Porsche or performance aftermarket options.
  • Ideal for road, touring, and spirited driving.

Upgrading delivers a more exciting exhaust character while supporting engine efficiency.

Highlights

  • Porsche sport silencer and muffler upgrades
  • OEM Porsche and premium aftermarket options
  • Improved exhaust sound, flow, and performance
  • Designed for performance-focused driving
  • High-quality materials for durability and reliability       

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