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Porsche > 997 (911) MK1 2005-2008 > Exhausts >

Sport Silencers / Mufflers

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Sports Exhaust & catalytic converter bypass X-Pipes Package Porsche 997 C2 / C4 / C4S

EXHAUSTKIT29

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Related, superseded, cross reference or alternative numbers for comparison.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

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Sports Exhaust Muffler & Headers Package. Porsche 997 Turbo

EXHAUSTKIT97

Product Information

Exhaust Muffler + Headers Package for Porsche 997 Turbo

DesignTek 997 Turbo Sport exhaust with 200 cell HIGH FLOW catalytic converters complete with high flow equal length headers.

Made from high grade T304 stainless steel. DesignTek 997 turbo system fits with original Porsche tail pipes or DesignTek tail pipes.

Fits:
Porsche 997 Turbo 2007>>

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Related, superseded, cross reference or alternative numbers for comparison.

EXHAUSTKIT97

3606009707

3606309705

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5 5 5 5 5

Sports Exhaust With Headers & Cats Package 1 (+18 to 27 bhp) Porsche 997 C2 / C4

EXHAUSTKIT93

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

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Akrapovic Slip-On Line Titanium Exhaust for Porsche 991 (911) GT3 / RS 2014>>

MTP-PO997GT3H/1

Product Information

Akrapovic Slip-On Line Titanium Exhaust

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

Related reference numbers
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MTP-PO997GT3H

99711102792

99711102799

99111102790

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3 3 3

Exhaust Muffler / Silencer Bypass Pipes NON-VALVED. Porsche 997 GT3

FSPOR997GT3SMB

Product Information

Fabspeed Side Muffler Bypass Pipes (Non-Valved).

Replaces the heavy and restrictive factory side mufflers for improved exhaust flow, increased sound and weight savings. Includes valves which maintain the factory sound level adjustment for ultimate combination of performance and comfort.

FEATURES:

• Fits: all Porsche 997 GT3 / GT3RS vehicles 2006-2009
• 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.

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Related, superseded, cross reference or alternative numbers for comparison.

FSPOR997GT3SMB

99711104790

99711104795

99711104890

99711104895

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3 3 3

Exhaust muffler / silencer set "Sports Sound Version". Porsche 997.1

99722097300SEXP

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
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99722097300SEXP

97300SEXP

1620609810

97.300SEXP

99711121203

99711123203

99711121202

99711123202

99711141204

99711143204

99711110500

99711110600

99711161103

99711121103

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4 4 4 4

Exhaust muffler / silencer set. Porsche 997.1

99722097300S

Product Information

Rear sport exhaust set - left and right.
Polished stainless steel.

danskmotorsport

97300S

1620602110

97.300S

99711121203

99711123203

99711121202

99711123202

99711141204

99711143204

99711110500

99711110600

99711161103

99711121103

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5 5 5 5 5

Exhaust muffler / silencer Sport OE Style. Porsche 997.1

99722097330S

Product Information

Replacement Rear sport exhaust set OE style. Bead blasted stainless steel.

danskmotorsport

1620601910

97330S

97.330S

99711121203

99711123203

99711121202

99711123202

99711141204

99711143204

99711110500

99711110600

99711161103

99711121103

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4 4 4 4

Exhaust Muffler / Silencer Sports SUPREMACY DesignTek for Porsche 997 PAIR

3606009715

Product Information

DesignTek Sports SUPREMACY system exhaust made from High Grade stainless steel.

Made in the UK

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
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3606009715

99711197901S

3606409703

99711121203

99711123203

99711141204

99711143204

99711110500

99711110600

99711161103

99711121103

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Exhaust muffler / silencer sports system DesignTek for Porsche 997 Turbo

3606009706

Product Information

Exhaust muffler / silencer sports system with 200 Cell Imported HIGH FLOW catalytic converters.

Pipe diameter: 60 mm

Fits:
Porsche 997.1 Turbo 2007 - 2009

DesignTek 997 Turbo Sport exhaust with 200 cell Imported HIGH FLOW catalytic converters. Complete bolt-on system.

Made from high grade T304 stainless steel. DesignTek 997 turbo exhaust system is designed to give your car a better deeper sound, fits with original Porsche tail pipes or DesignTek tail pipes.

Related reference numbers
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3606009706

99711102680

99711300980

997113009BX

99711301080

997113010BX

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3 3 3

Exhaust muffler / silencer sports system DesignTek for Porsche 997 Turbo

3606009709

Product Information

A Voucher for £100 available when you buy this product. For more information CLICK HERE

Exhaust Muffler / Silencer Sports System with 200 Cell Imported HIGH FLOW catalytic converters.

Pipe diameter: 70 mm

99711102772

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10 10 10 10 10 10 10 10 10 10

Exhaust Muffler / Silencer Sports System DesignTek for Porsche 997.1

3606009702

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
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3606009702

3606009702

99711197901S

99711121102

99711121103

99711123102

99711123103

99711121202

99711121203

99711123202

99711123203

99711141103

99711141104

99711143103

99711143104

99711141203

99711141204

99711143203

99711143204

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Exhaust Muffler / Silencer Titanium DesignTek for Porsche 997

3606009736

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.

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3606009736

99711121102

99711121103

99711123102

99711123103

99711121202

99711121203

99711123202

99711123203

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Exhaust Muffler / Silencer Titanium DesignTek for Porsche 997 Turbo

3606009737

Product Information

Exhaust Muffler / Silencer Titanium with Catalytic Converter Twin Chamber Design Weight: 9.90Kg

Fits:
Porsche 997 Turbo

DesignTek Titanium Super light weight Sport exhaust system. Original Porsche system weight 48Kg, DesignTek Titanium system just 9.90Kg. 996TT / X50/ GT2 / 997 Turbo exhaust system with two 200 cell stainless steel cased German Motorsports Race Cats, DesignTek Exhaust has much lower back pressure and more guaranteed power proven & tested.

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3606009737

3606009737

99711102680

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Exhaust Muffler / Silencer Titanium DesignTek for Porsche 997 Turbo

3606009738

Product Information

Exhaust Muffler / Silencer Titanium with Catalytic Converter Single Chamber Design Weight: 9.50Kg

DesignTek Titanium Super light weight Sport exhaust system. Original Porsche system weight 46Kg, DesignTek Titanium system just 9.50Kg.996TT / X50/ GT2 / 997 Turbo exhaust system with two 200 cell stainless steel cased German Motorsports Race Cats.

Fits:
Porsche 997 Turbo

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3606009738

99711102680

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Exhaust Muffler Super Cup Pipes. Porsche 997 Carrera 3.6L

FSPOR997MB

Product Information

Fabspeed Muffler Bypass Pipes Porsche 997 Carrera 3.6L Very loud system

Lighten the rear of the vehicle while adding aggressive Supercup-style sound by replacing the heavy factory mufflers with straight-through tubes.

FEATURES:

• Fits: all Porsche 997 Carrera 3.6L vehicles 2005-2008 (will not fit with PSE-equipped exhaust tips)
• Increase horsepower and torque by 21 whp and 21 ft-lbs
• Saves 31 lbs from the rear of the vehicle
• Used by many Rolex Grand Am race teams as well as PCA/POC and HPDE drivers
• Simple DIY bolt-on installation; no cutting or welding required
• All Fabspeed performance products are backed by the Fabspeed Lifetime Limited Warranty

• LOUD and proud aggressive SUPERCUP style sound, Saves 40lbs from the rear of your 997 and increases power and sports car sound. +12HP, Saving weight from the rear from any rear engine Porsche is a HUGE benefit and gain in handling and performance as all that inertial weight is removed from the rearmost part of the 997.

* Please note these pipes will be VERY loud, so the neighbors want be too happy neither. Might not be street legal.

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.

Related reference numbers
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FSPOR997MB

99722010036

99722010035

99711121102

99711121103

99711121202

99711121203

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DISPLAYING 1 to 16 (of 32 products)

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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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exhaust system for 997.1 M96.05 3.6L COUPE / CABRIO 2005-08 202-00

exhaust system for 997.1 M97.01 3.8L COUPE S / CABRIO S 2005-08 202-01

exhaust system, exclusive programme, single parts for 997.1 2005-08 202-03

exhaust system with heat protection for 997.1 TURBO/GT2 M97.70 2007-09 and 997.1 GT2 RS M97.70 2011 202-00

exhaust system for 997.1 GT2 M97.70 2008 ONWARDS 202-02

exhaust system 997 GT3 M97.76 2007-09 202-00

exhaust system 997 GT3 / GT3 RS M97.77 2010-11 and 997 GT3 RS 4.0 M97.74 2011 202-01