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Fabspeed Exhaust
- Porsche 991.1 Carrera C2 3.4L (350 Bhp) 2012-16
- Porsche 991.1 Carrera C2S / GTS 3.8L (400/430 Bhp) 2012-16
- Porsche 991.1 Carrera C4 3.4L (350 Bhp) 2012-16
- Porsche 991.1 Carrera C4S / GTS 3.8L (400/430 Bhp) 2012-16
- Porsche 991.1 Turbo 3.8L (520 Bhp) 2014-16
- Porsche 991.1 Turbo S 3.8L (560 Bhp) 2014-16
- Porsche 991.1 R 4.0L (500 Bhp) 2016
- Porsche 991.1 GT3 3.8L (475 Bhp) 2014-16
- Porsche 991.1 GT3 RS 4.0L (500 Bhp) 2015-16
- Porsche 991.1 Carrera C2 3.4L (350 Bhp) 2012-16
- Porsche 991.1 Carrera C2S / GTS 3.8L (400/430 Bhp) 2012-16
- Porsche 991.1 Carrera C4 3.4L (350 Bhp) 2012-16
- Porsche 991.1 Carrera C4S / GTS 3.8L (400/430 Bhp) 2012-16
Free-flowing headers without catalytic converters; designed for maximum power and exhaust flow for race and track applications.
FEATURES:
• Fits: all Porsche 991 Carrera vehicles 2012+
• Adds 27 whp and 26 ft-lbs of torque at 6500rpm
• Saves 4 lbs from the rear of the vehicle
• Recommended for track/off-road use only
• Constructed from equal-length T304 stainless steel C.N.C. mandrel-bent tubing for improved torque and equalized engine pulsing
• More power and torque across the RPM band and dramatically improved sports car sound
• Gaskets are included for a leak proof seal
• Direct replacement for the restrictive OEM headers with no cutting or welding required
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.
Please note: By fitting these race headers the emission light will come on your dash and you will require the oxygen sensor extension tubes or your car to be remapped for the emission light to come off
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Related, superseded, cross reference or alternative numbers for comparison.
FSPOR991RHDR
The product you are viewing cross references to these numbers
- Porsche 991.1 GT3 3.8L (475 Bhp) 2014-16
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.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
FSPOR991GT3SMB
The product you are viewing cross references to these numbers
- Porsche 991.1 Turbo 3.8L (520 Bhp) 2014-16
- Porsche 991.1 Turbo S 3.8L (560 Bhp) 2014-16
High-flowing, direct bolt-on replacement for the bulky & restrictive factory catalytic converters.
FEATURES:
• Fits all 991 Turbo vehicles (2013+)
• Improves power and throttle response while decreasing back pressure
• High flow sport race cat for maximum flow and power.
• Constructed from high-quality 14-16 gauge T304L stainless steel for optimum flow and maximum durability
• Includes integrated O2 sensor bung for fuel-injected cars
• Direct replacement bolt-on for stock cat or cat bypass pipe
NOTE: 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.
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.
FSPOR991TSC
The product you are viewing cross references to these numbers
- Porsche 991.1 Carrera C2 3.4L (350 Bhp) 2012-16
- Porsche 991.1 Carrera C2S / GTS 3.8L (400/430 Bhp) 2012-16
- Porsche 991.1 Carrera C4 3.4L (350 Bhp) 2012-16
- Porsche 991.1 Carrera C4S / GTS 3.8L (400/430 Bhp) 2012-16
Performance headers improve exhaust flow and sports car sound; Sport Headers include 200-cell HJS Sport Catalytic Converters.
FEATURES:
• Fits: all Porsche 991 Carrera vehicles 2012+
• Improves power by 23 whp and 22 ft-lbs. of torque at 5000rpm
• Includes German-imported 200-cell HJS Sport Catalytic Converters for maximum performance
• Investment-cast F1/ALMS/NASCAR high-velocity 3-into-1 merge collectors for maximum performance
• Constructed from high-quality 14-16 gauge C.N.C. mandrel-bent T304L stainless steel for optimum flow and maximum durability
• Direct replacement for the restrictive OEM headers.
• Gaskets included for a leak proof seal
• Fabspeed Lifetime Limited Warranty.
NOTE: 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. 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.
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.
FSPOR991SHDR
The product you are viewing cross references to these numbers
- Porsche 991.1 GT3 3.8L (475 Bhp) 2014-16
Direct replacement for the restrictive OEM headers, offering improved power and throttle response throughout the RPM range.
FEATURES:
• Fits: all Porsche 991 GT3 vehicles 2014+
• Includes German-imported HJS 200-Cell Tri-Metallic Sportcats
• Saves 2lbs from the rear of the vehicle
• CNC mandrel-bent 1pc primary header tubes
• High-velocity motorsports-style merge collector
• Constructed from T304 Stainless Steel
• All Fabspeed performance products are backed by the Fabspeed Lifetime Limited Warranty
NOTE: 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.
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.
FSPOR991GT3SHDR
The product you are viewing cross references to these numbers
- Porsche 991.1 Turbo 3.8L (520 Bhp) 2014-16
- Porsche 991.1 Turbo S 3.8L (560 Bhp) 2014-16
High-quality performance headers provide better boost response and power throughout the RPM range
FEATURES:
• Fits all 991 Turbo vehicles (2013+)
• Improves power and throttle response
• Saves 6 lbs from the rear of the vehicle
• Features 3-into-1 high velocity pyramidal investment cast merge collectors for improved exhaust scavenging.
• Constructed from high-quality 14-16 gauge C.N.C. mandrel-bent T304L stainless steel for optimum flow and maximum durability
• Direct bolt on replacement for factory OEM headers with no cutting or welding required.
• Reuse of factory OEM header gaskets is required
• 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.
- Porsche 991.1 Turbo 3.8L (520 Bhp) 2014-16
- Porsche 991.1 Turbo S 3.8L (560 Bhp) 2014-16
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 Cat Bypass 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
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.
FSPOR991TSSRX
The product you are viewing cross references to these numbers
- Porsche 991.1 Turbo 3.8L (520 Bhp) 2014-16
- Porsche 991.1 Turbo S 3.8L (560 Bhp) 2014-16
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 STREET application includes high performance 200-cell HJS Sport Catalytic Converters for improved flow and exhaust sound
• Dramatic improvement in sports car sound and power throughout the RPM range
• Includes Deluxe Quad Style Tips in Polished Chrome 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 Californi
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.
FSPOR991TSSSX
The product you are viewing cross references to these numbers
- Porsche 991.2 Turbo Coupe 3.8L (540 Bhp) 2016-19
- Porsche 991.2 Turbo S Coupe 3.8L (580 Bhp) 2016-19
- Porsche 991.2 Turbo Cabriolet 3.8L (540 Bhp) 2016-19
- Porsche 991.2 Turbo S Cabriolet 3.8L (580 Bhp) 2016-19
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 991.2 Turbo / Turbo S vehicles (2017+)
• NOTE: Fabspeed's Supersport X-Pipe STREET application includes high performance 200-cell HJS Sport Catalytic Converters for improved flow and exhaust sound
• Dramatic improvement in sports car sound and power throughout the RPM range
Includes Deluxe Quad Style Tips in Polished Chrome 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.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
FSPOR9912TSSSX
The product you are viewing cross references to these numbers
- Porsche 991.1 GT3 3.8L (475 Bhp) 2014-16
- Porsche 991.1 GT3 RS 4.0L (500 Bhp) 2015-16
The Fabspeed Deluxe Dual Style Exhaust Tips are a premium visual and finishing upgrade designed for the 2014–2016 Porsche 991 GT3 and GT3 RS.
Fits:
- Porsche 991.1 GT3 3.8L (475 Bhp) 2014-16
- Porsche 991.1 GT3 RS 4.0L (500 Bhp) 2015-16
Featuring larger 100mm outlets compared with approximately 88mm factory tips, they give the rear of the GT3 a wider, more aggressive appearance while retaining a factory-style fit.
The tips are designed to bolt directly to the OEM centre muffler and can also be used with compatible aftermarket exhaust systems that accept factory-style exhaust tips.
A lightweight holder plate is used to secure the tips in position while maintaining correct alignment with the rear bumper and exhaust outlet.
What This Product Does:
Exhaust tips form the visible final outlet of the exhaust system.
Their main purpose is to direct exhaust gases away from the rear of the vehicle while providing a finished appearance at the exhaust outlet.
The Fabspeed Deluxe Dual Style Tips are primarily designed to:
- Increase the visual size of the exhaust outlets
- Give the GT3 a more aggressive rear appearance
- Replace damaged or deteriorated factory exhaust tips
- Maintain correct exhaust outlet positioning
- Provide secure attachment to the centre muffler
- Offer a choice of premium finishes
- Work with the factory centre muffler
- Work with compatible aftermarket exhaust systems
These exhaust tips are primarily an appearance and finishing upgrade rather than a significant engine-performance modification.
Symptoms Of Wear Or Failure:
Exhaust tips are exposed continuously to exhaust heat, condensation, road debris and environmental contamination.
Common signs of deterioration include:
- Heavy surface corrosion
- Pitting or staining
- Burnt or permanently discoloured surfaces
- Scratches or cosmetic damage
- Dents from impact
- Cracked welds or mounting points
- Loose mounting hardware
- Rattling from the exhaust-tip assembly
- Tip movement when touched
- Poor alignment within the bumper opening
- One outlet sitting lower or further outward than the other
- Excessive soot build-up
- Damaged carbon-fibre outer sections where fitted
- Peeling or deteriorated surface coatings
- Contact between the tip and surrounding bumper or trim
Some discoloration and soot accumulation are normal on performance exhaust systems and do not necessarily mean the tip requires replacement.
Why Replacement Matters:
In many cases, exhaust-tip replacement is primarily cosmetic. Worn, heavily scratched, corroded or discoloured tips can detract significantly from the appearance of the rear of the vehicle.
However, replacement becomes more important where the tip or mounting system is physically damaged.
A loose or misaligned exhaust tip can:
- Rattle during driving
- Contact the bumper or diffuser
- Damage surrounding trim
- Move excessively during exhaust-system vibration
- Sit incorrectly within the rear valance
- Eventually loosen further or detach
Replacing damaged tips and ensuring the mounting hardware is secure helps restore correct alignment and prevents unnecessary contact with surrounding bodywork.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
FSPOR991GT3DLTTI
The product you are viewing cross references to these numbers
- Porsche 991.1 Carrera C2 3.4L (350 Bhp) 2012-16
- Porsche 991.1 Carrera C4 3.4L (350 Bhp) 2012-16
The Fabspeed Porsche 991 Carrera Deluxe Quad-Style Tips are a premium exhaust styling upgrade designed for 2012–2016 Porsche 991 Carrera NON-S models without Porsche Sport Exhaust (NON-PSE).
Fits:
- Porsche 991.1 Carrera C2 3.4L (350 Bhp) 2012-16
- Porsche 991.1 Carrera C4 3.4L (350 Bhp) 2012-16
Designed to replace the standard factory exhaust tips, these quad-style outlets give the rear of the Porsche 991 Carrera a wider, more aggressive appearance while retaining compatibility with the factory OEM mufflers.
Manufactured from high-quality T304 stainless steel, each outlet measures 3.5 inches / 90 mm in diameter.
Unlike a complete exhaust system, these tips primarily provide a visual exhaust upgrade. They do not replace the mufflers or catalytic converters and should not be treated as a significant engine-performance modification.
What This Product Does:
The Fabspeed Deluxe Quad-Style Tips replace the standard exhaust outlets at the rear of the Porsche 991 Carrera.
Their primary function is to provide a larger and more distinctive exhaust outlet design.
The quad-tip arrangement creates the appearance of four exhaust outlets across the rear of the vehicle, giving the Carrera a more purposeful performance-inspired look.
They provide:
- More aggressive rear styling
- Quad-outlet exhaust appearance
- Larger 90 mm outlets
- A premium stainless-steel finish
- Improved visual integration with the rear bumper
- A straightforward alternative to the standard factory tips
- Compatibility with factory NON-PSE mufflers
- Compatibility with Fabspeed exhaust systems
Exhaust Styling Upgrade:
Exhaust tips are one of the most visible components of the exhaust system.
Because they sit directly beneath the rear bumper, changing their size, shape and finish can substantially alter the appearance of the vehicle without replacing the complete exhaust system.
The Fabspeed quad-style arrangement gives the 991 Carrera a broader and more performance-oriented appearance while maintaining a design appropriate for the shape of the factory rear bumper.
Why Upgrading Matters:
These Fabspeed tips are primarily an appearance upgrade rather than a conventional wear replacement or major performance component.
Owners may choose them even when the original tips remain serviceable.
Reasons for upgrading include:
- More aggressive quad-tip styling
- Larger 90 mm exhaust outlets
- Premium T304 stainless-steel construction
- Improved rear-end appearance
- Compatibility with OEM mufflers
- Compatibility with Fabspeed exhaust systems
- Straightforward bolt-on installation
This makes them suitable for owners who want to change the appearance of their Porsche without replacing the complete rear exhaust system.
Related reference numbers
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FSPOR991QDTSCF
The product you are viewing cross references to these numbers
- Porsche 991.1 R 4.0L (500 Bhp) 2016
- Porsche 991.1 GT3 3.8L (475 Bhp) 2014-16
- Porsche 991.1 GT3 RS 4.0L (500 Bhp) 2015-16
The Fabspeed Long Tube Competition Race Header System is a motorsport-focused exhaust upgrade developed for the 2014–2016 Porsche 991 GT3, GT3 RS and 911 R.
Fits:
- Porsche 991.1 R 4.0L (500 Bhp) 2016
- Porsche 991.1 GT3 3.8L (475 Bhp) 2014-16
- Porsche 991.1 GT3 RS 4.0L (500 Bhp) 2015-16
Designed specifically for racing, track and closed-course applications, the system replaces the restrictive factory header, catalyst and side-muffler arrangement with a high-flow long-tube exhaust configuration engineered to maximise horsepower, torque and throttle response.
The package combines:
- Long-tube competition race headers
- Burns Stainless high-velocity merge collectors
- Integral side muffler bypass pipes
- Premium Helical exhaust valves
- High-flow T304 stainless-steel construction
The system was developed through CAD modelling, Dynojet testing and track development to improve exhaust flow throughout the engine's operating range.
What This Product Does:
The exhaust headers collect combustion gases as they leave each cylinder and direct them into the remaining exhaust system.
Header length, primary-pipe diameter, collector design and exhaust restriction all influence how efficiently these gases leave the engine.
The Fabspeed Long Tube Competition system is designed to:
- Increase exhaust gas flow
- Reduce exhaust restriction
- Improve exhaust scavenging
- Increase horsepower
- Increase torque
- Improve throttle response
- Strengthen mid-range power delivery
- Improve high-RPM breathing
- Reduce rear exhaust-system weight
- Produce a significantly more aggressive motorsport exhaust note
- Bypass restrictive factory side mufflers
- Provide valved control within the side-muffler bypass arrangement
This system is intended primarily for maximum track performance rather than road-going refinement.
Symptoms Of Wear Or Failure:
Factory GT3 exhaust components are exposed to extreme temperatures, vibration and repeated thermal cycling.
Common symptoms of deteriorating headers, catalysts or side mufflers can include:
- Ticking or tapping from the header area
- Blowing or hissing exhaust leaks
- Black soot around flange connections
- Cracked headers or welds
- Damaged or warped header flanges
- Catalyst rattling
- Reduced high-RPM performance
- Sluggish throttle response
- Excessive exhaust heat
- Metallic rattling from mufflers
- Broken internal muffler components
- Loose exhaust mounting hardware
- Increased exhaust vibration
- Check Engine Light relating to catalyst efficiency
- Sulphur-like smell from a deteriorating catalyst
- Visible heat damage around exhaust joints
Similar symptoms can also result from damaged exhaust gaskets, oxygen sensors or heat shields, so complete diagnosis is recommended before replacing components.
Why Replacement Matters:
A damaged or leaking header can allow extremely hot exhaust gases to escape into the surrounding engine area.
A deteriorating catalyst or internally damaged muffler can also increase exhaust restriction.
Continued use of damaged components may contribute to:
- Reduced engine performance
- Poor throttle response
- Increased exhaust temperatures
- Additional stress on surrounding components
- Exhaust leakage
- Unwanted vibration or rattling
- Further damage to adjoining exhaust components
- Replacing deteriorated parts restores a secure exhaust path.
For a vehicle with serviceable factory components, the Fabspeed system should be regarded primarily as a competition performance, sound and weight-reduction upgrade.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
FSPOR991GT3LTRHS
The product you are viewing cross references to these numbers
- Porsche 991.1 GT3 3.8L (475 Bhp) 2014-16
- Porsche 991.1 GT3 RS 4.0L (500 Bhp) 2015-16
The ULTIMATE OEM style high performance replacement muffler for your GT3
FEATURES:
• Fits all Porsche 991 GT3 / GT3 RS vehicles 2014-2016 worldwide
• Constructed from CNC cut T304L stainless steel
• Designed from 3D scans of the OEM muffler so we can achieve perfect bolt-on fitment
• Will not break or crack like OEM GT3 mufflers do
• Incorporates our signature cast X-pipe for superior flow and exhaust scavenging
• Paired with our Side Muffler Bypass Pipes this muffler adds +27 ft/lbs of TQ and +16 WHP or +18 HP at the crank!
• 4 different tip options available
• Completely retains PSE valved exhaust functionality
• No Check Engine Light guaranteed
• This cat-back system is emissions legal in all 50 states and the rest of the world
• Built in house at Fabspeed Motorsport USA in Fort Washington, PA
• Simple bolt-on installation, no cutting or welding required
• All Fabspeed performance products are backed by the Fabspeed Lifetime Warranty
As many GT3 owners know, the OEM mufflers are prone to cracking, breaking and blowing out, particularly the titanium mufflers on GT3RS cars. We wanted to design a muffler replacement that not only fixed that issue but also improved on the OEM design. Using our 25+ years of air and water-cooled experience, we took the valve open tubing to 2.75in / 70mm which is the optimal diameter for GT3 engines to have low restriction but maintain high velocity and high GT3 pitch for the signature GT3 CUP car sound. Then, we implemented our signature investment cast X-Pipe for optimal exhaust scavenging. The X merges the two cylinder banks without creating any restriction in exhaust flow. To maintain the factory muffler’s exhaust note and lack of drone, we mimicked Porsche’s 7 chamber design. This makes for a completely drone free muffler, even when running catless race headers! Pair this with Fabspeed Side Muffler Muffler Bypass Pipes for the ultimate emissions compliant GT3 exhaust. This muffler is guaranteed to NEVER BREAK or fail.
SOUND:
This muffler will have a very similar tone to the OEM muffler, however, it will be a bit louder with PSE turned on. It will also sound a bit smoother and higher pitched thanks to our signature X-pipe.
POWER:
On our 991.1 GT3RS test car, paired with Fabspeed Side Muffler Muffler Bypass Pipes, the Rennsport Muffler picked up an impressive 27 ft/lbs of TQ down low at 3,200 RPM. From 2,900 RPM all the way to 5,700 RPM it picks up 10 WHP or more, and peak WHP is up from 446 to 454! That’s a gain of 8 WHP or 9 HP at the crank.
NOTE:
• Requires OEM gaskets and hardware to be reused
• If they are not available here are the necessary part numbers.
• 2x Muffler band straps (99711111970)
• 2x Bolt for muffler band strap (90006736201)
• 2x Each Side Muffler to Center Muffler Gaskets (99711156390, 99711156190)
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.
FSPOR991GT3RSM
The product you are viewing cross references to these numbers
- Porsche 991.1 Turbo 3.8L (520 Bhp) 2014-16
- Porsche 991.1 Turbo S 3.8L (560 Bhp) 2014-16
The Fabspeed Supersport STREET Performance Package is a comprehensive performance upgrade designed for the 2013–2016 Porsche 991 Turbo and Turbo S.
Fits:
- Porsche 991.1 Turbo 3.8L (520 Bhp) 2013-16
- Porsche 991.1 Turbo S 3.8L (560 Bhp) 2013-16
Rather than upgrading a single component, the package combines freer-flowing exhaust hardware, performance headers, improved intake filtration and ECU software to enhance the overall breathing and response of the twin-turbocharged 3.8-litre engine.
The package includes:
- Fabspeed Supersport X-Pipe Exhaust System
- 200-cell HJS Sport Catalytic Converters
- Fabspeed Sport Headers
- BMC F1 Replacement Air Filter
- Fabspeed XperTune Performance Software with handheld tuner
- Choice of Deluxe Quad-Style or GT2-Style exhaust tips
Fabspeed quotes gains of approximately 83 horsepower and 127 lb-ft of torque, together with a 15 lb reduction in weight. Actual results can vary depending on vehicle condition, fuel, specification and operating conditions.
What This Product Does:
The package improves several areas that affect engine airflow and turbocharger performance.
The factory intake and exhaust systems must balance refinement, noise control, emissions requirements and performance. The Fabspeed package uses less restrictive components and matching engine-management software to increase airflow and allow the engine to take greater advantage of the upgraded hardware.
Its main benefits include:
- Improved exhaust gas flow
- Reduced post-turbo exhaust restriction
- Improved throttle response
- Shorter turbo spool time
- Quicker acceleration
- Increased horsepower and torque
- More pronounced sports-car exhaust sound
- Reduced exhaust-system weight
- Improved intake airflow
- ECU calibration designed around the performance upgrades
Symptoms Of Wear Or Failure:
Because this package replaces or upgrades several systems, symptoms vary depending on the component affected.
- Exhaust blowing, ticking or hissing
- Cracked pipes or welds
- Black soot around leaking joints
- Metallic rattling from catalytic converters
- Reduced engine performance
- Increased turbo lag
- Restricted exhaust flow
- Check Engine Light relating to catalyst efficiency
- Unusual sulphur-like exhaust smell
- Corroded or damaged exhaust components
Why Replacement / Upgrading Matters:
The Porsche 991 Turbo relies on efficient airflow both before and after its turbochargers.
A restricted intake makes it harder for the engine to draw the air it needs, while excessive exhaust restriction works against efficient evacuation of gases after combustion.
Deteriorated catalysts, leaking headers or damaged exhaust components can therefore contribute to:
- Slower turbo response
- Reduced performance
- Increased exhaust temperatures
- Poor throttle response
- Exhaust leaks
- Increased mechanical and thermal stress
Replacing deteriorated components restores the integrity of these systems.
For a vehicle with healthy factory components, the Fabspeed package is primarily a performance upgrade, combining intake, exhaust and ECU modifications as one integrated system rather than upgrading each component independently.
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FSPOR991TSPKGT
The product you are viewing cross references to these numbers
- Porsche 991.1 Carrera C2 3.4L (350 Bhp) 2012-16
- Porsche 991.1 Carrera C2S / GTS 3.8L (400/430 Bhp) 2012-16
- Porsche 991.1 Carrera C4 3.4L (350 Bhp) 2012-16
- Porsche 991.1 Carrera C4S / GTS 3.8L (400/430 Bhp) 2012-16
The Fabspeed Valved Center Muffler Bypass X-Pipe is a performance exhaust upgrade designed for 2012–2016 Porsche 991 Carrera 3.4L and Carrera S 3.8L models equipped with the factory valved exhaust system.
Fits:
- Porsche 991.1 Carrera C2 3.4L /3.8L 2012-16
- Porsche 991.1 Carrera C4 3.4L / 3.8L 2012-16
The system replaces the restrictive factory centre muffler with a freer-flowing X-pipe while retaining the functionality of the Porsche valved exhaust arrangement. This allows the driver to continue benefiting from two distinct exhaust characteristics: a more aggressive sports-car sound with the valves open and a smoother, quieter tone with the valves closed.
Manufactured from 14–16 gauge CNC mandrel-bent T304L stainless steel, the X-pipe is designed to improve exhaust flow, reduce weight and provide long-term resistance to corrosion and high exhaust temperatures.
Fabspeed reports gains of approximately:
- +16 wheel horsepower
- +14 lb-ft of torque
- 12 lb weight reduction compared with the factory centre muffler
Actual performance gains can vary depending on vehicle condition, specification, fuel and environmental conditions.
What This Product Does:
The factory centre muffler helps control exhaust volume but also creates a degree of restriction in the exhaust path.
The Fabspeed X-pipe replaces this muffler with a freer-flowing crossover section, allowing exhaust gases from the two cylinder banks to merge and flow more efficiently toward the rear exhaust outlets.
Its main functions and benefits include:
- Reducing centre-muffler exhaust restriction
- Improving exhaust gas flow
- Increasing exhaust sound and character
- Retaining factory exhaust-valve operation
- Supporting improved throttle response
- Producing measurable horsepower and torque gains
- Reducing exhaust-system weight
- Providing a more direct flat-six exhaust note
- Maintaining compatibility with factory valved side mufflers
Fabspeed also lists the X-pipe as a suitable complement to its Maxflo Performance Side Exhaust System.
Symptoms Of Wear Or Failure:
The factory centre muffler and associated valved-exhaust components are exposed to heat, condensation, vibration and repeated thermal cycling.
Common signs of deterioration can include:
- Exhaust rattling from the centre muffler
- Internal muffler components becoming loose
- Cracked exhaust seams or welds
- Blowing or hissing noises
- Black soot around leaking joints
- Corrosion on pipes or muffler sections
- Exhaust-valve rattling
- Valve mechanism sticking open or closed
- Uneven exhaust sound between operating modes
- Failure to change exhaust tone when the valve system is activated
- Loose clamps or mounting hardware
- Excessive exhaust movement
- Poor exhaust alignment
- Unexpected increase in exhaust noise
Some valve-related symptoms may originate from actuators, vacuum lines or electronic controls rather than the exhaust pipework itself, so the complete system should be inspected before replacement.
Why Replacement Matters:
A deteriorated muffler or leaking exhaust connection can allow hot exhaust gases to escape before reaching the intended outlets.
This can lead to:
- Increased unwanted exhaust noise
- Rattles and vibration
- Soot accumulation
- Excessive heat around surrounding components
- Deterioration of adjacent exhaust joints
- Reduced exhaust-system integrity
A malfunctioning exhaust valve can also prevent the system from switching correctly between quieter and louder operating modes.
Replacing damaged components helps restore:
- Secure exhaust routing
- Leak-free exhaust connections
- Correct valve functionality
- Proper clearance from surrounding components
- Consistent exhaust operation
Where the original system remains serviceable, the Fabspeed X-pipe is primarily a performance, sound and weight-saving upgrade rather than a necessary repair.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
FSPOR991CMBXV
The product you are viewing cross references to these numbers
- Porsche 991.1 Carrera C2 3.4L (350 Bhp) 2012-16
- Porsche 991.1 Carrera C2S / GTS 3.8L (400/430 Bhp) 2012-16
- Porsche 991.1 Carrera C4 3.4L (350 Bhp) 2012-16
- Porsche 991.1 Carrera C4S / GTS 3.8L (400/430 Bhp) 2012-16
Increase power and save weight with a throatier and deeper exhaust note throughout the RPM range; available with Black Chrome or Polished Deluxe Quad-Style Tips
The 991 Carrera Maxflo Performance Side Exhaust replaces the factory side mufflers, improving the exhaust flow and the overall power while providing a deap and throaty sports car sound. This system can be used with the OEM outlet tips, or can be upgraded to include Deluxe Quad-Style Tips in either Black Chrome or Polished finish.
Fabspeed recommends using these Side Mufflers in conjunction with a Center Muffler Bypass X-Pipe for non-PSE equipped cars. There is not a significant sound advantage to using these Side Mufflers alone in conjunction with the factory non-PSE center muffler.
FEATURES:
• Fits all Porsche 991 Carrera vehicles (2012+)
• Designed to be compatible with factory/OEM headers and center muffler (NOTE: Please call/contact us if you're interested in combining this system with additional Fabspeed exhaust components.)
• Saves 1 lb versus the factory components
• Improves sports car sound and power throughout the RPM range; 15 whp and 11 ft-lbs of torque
• 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 side mufflers
• Compatible with Fabspeed's Deluxe Quad-Style Tips in Polished or Black Chrome finish for most models); also compatible with OEM tips
• Backed by Fabspeed's 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.
FSPOR991MAX
The product you are viewing cross references to these numbers
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Exhaust system - A103, A104 - 991.1 3.4L and 3.8L 2012-16 202-000
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Exhaust system - PR:176 Sports exhaust system - 991.1 2012-16 202-005
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Exhaust system / Emission control / Exhaust gas turbocharger 991 Turbo 3.8L 2014-16 202-000
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Exhaust system (Model: A175) 991 GT3 3.8L 2014-17 202-000
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Exhaust system (Model: A176) 991 4.0L GT3 RS / 991 R 2014-17 202-005
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Exhaust system 911 (991) GT3 CUP 2016 2.2-05
Fabspeed Exhaust Systems - Precision Performance & Sound Upgrades
Fabspeed Exhaust Systems are premium performance exhaust upgrades engineered to deliver increased power, improved exhaust flow, and a distinctive motorsport-inspired sound. Designed and manufactured with precision engineering and performance testing at their core, Fabspeed exhausts are built to enhance the driving experience of Porsche road and track vehicles alike.
Available from Design911, Porsche Fabspeed exhaust components are crafted using high-quality stainless steel and optimised designs to reduce backpressure, improve throttle response, and unleash a more engaging exhaust tone while maintaining durability and reliability.
What Do Fabspeed Exhaust Systems Do?
Fabspeed exhausts optimise exhaust gas flow and acoustic performance.
Core Functions:
- Reduce exhaust restriction and backpressure.
- Improve throttle response and power delivery.
- Enhance exhaust sound and character.
- Improve engine efficiency and breathing.
- Upgrade exhaust aesthetics and build quality.
A high-flow exhaust system plays a key role in unlocking engine performance.
Why Do Standard Exhaust Systems Fail or Limit Performance?
Factory exhaust systems are designed to prioritise emissions
compliance, cost efficiency, and sound suppression. Over time, they can suffer
from:
- Restrictive internal baffling reducing performance.
- Corrosion from moisture and repeated heat cycles.
- Excessive weight limiting efficiency.
- Muted exhaust sound lacking engagement.
- Reduced compatibility with performance tuning upgrades.
As engines are pushed harder, standard exhausts can become a performance bottleneck.
Why Upgrade to a Fabspeed Exhaust?
Fabspeed exhaust systems are designed for drivers seeking performance-focused enhancements.
Upgrade Benefits:
- Improved exhaust flow for increased performance.
- Sportier, more aggressive exhaust sound.
- Lightweight, durable stainless steel construction.
- Precision-engineered components for perfect fitment.
- Ideal for performance road cars and track applications.
Upgrading to Fabspeed delivers noticeable gains in sound, response, and driving excitement.
Highlights
- Porsche Fabspeed performance exhaust systems
- Improved exhaust flow and throttle response
- Sporty, motorsport-inspired exhaust sound
- High-quality stainless steel construction
- Designed for performance and enthusiast driving
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Standard Silencers / Mufflers
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Sport Silencers / Mufflers
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Switchable Silencers / Mufflers
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All Silencers / Mufflers
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Catalyst / Bypass
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Manifold / Headers
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Exhaust Tail Pipes
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Heat Exchangers
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Exhaust Package
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Exhaust Gaskets
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Exhaust Nuts / Bolts / Studs
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Brackets / Clamps / Straps
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Exhaust Fitting Kits
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Sport Exhaust Vacuum Parts
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Lambda Sensors / Probes
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Lambda Sensor Extensions
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Gas Temperature Sensors
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Remus Exhaust
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Akrapovic Exhaust
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RSS Exhaust
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BBi Autosport Exhaust
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Tubi Exhaust
