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- Porsche 992.1 GT3 4.0L / 992 S/T 4.0L 2021-24
- Porsche 992.1 GT3 RS 4.0L 2022-24
SOUL Street Headers are built around large-diameter, free-flowing catalytic converters with optimized cast flanges and runners for maximum gains in power, throttle response, and tone from the 992 GT3’s 4.0-liter flat-six.
• Direct replacement of factory headers on 992 GT3 / GT3 RS with stock rear exhaust
• All Soul Performance Products exhaust components are backed by the industry’s best Lifetime Warranty for both street and track use
• Designed and built in-house at our Willow Grove, PA facility
DEVELOPMENT
Even with its motorsport pedigree, the Porsche 992 GT3 and GT3 RS are not immune to the compromises imposed by emissions regulations and production constraints. Factory header design—limited by tubing length, runner diameter, and collector efficiency—restricts both sound and performance. That’s where SOUL steps in.
By replacing the restrictive OEM header assembly, which integrates catalytic converters and particulate filters, our SOUL Street Headers immediately free up flow and unlock performance. Each system is designed around large-diameter, high-flow catalytic converters and optimized runners for maximum gains in horsepower, throttle response, and the signature GT3 flat-six tone.
The result is a sharper, more visceral exhaust note that truly amplifies the 4.0-liter’s character—delivering a rich motorsport sound without compromising drivability. Built to endure the most aggressive track conditions, these headers feature billet CNC-machined head flanges that provide a smooth transition from the exhaust ports to the runners, increasing flow and reinforcing structural integrity to prevent cracking under repeated high-load use.
CONSTRUCTION:
Each set of SOUL Street Headers is handcrafted in-house in the USA from mandrel-bent, thick-wall (.065”) T304L stainless steel tubing for superior durability and thermal resistance. The billet 304L stainless steel head flanges are precision-machined on a 5-axis CNC mill, ensuring the most efficient exhaust flow and unmatched strength.
Every joint is TIG welded and back-purged with ARCAL™ Prime argon gas for full weld penetration and maximum longevity—essential for track reliability. Thick-gauge aluminum fixtures are used throughout fabrication to act as heat sinks, preventing distortion and guaranteeing perfect fitment on every set.
BOLT ON AND GO:
Each header set is rigorously inspected, fixture-tested, and foam-packed to ensure perfect fitment and safe delivery. Installation is completely bolt-on, designed to integrate seamlessly with the factory system or compatible aftermarket components.
LIFETIME WARRANTY:
Drive with confidence—every SOUL exhaust component is backed by our renowned Lifetime Warranty, covering both street and track use. Our support team stands ready to assist with fast, professional service for any questions or needs.
Please note: This item is not a stock product. It is a special order part and once ordered with us is not subject to cancellation or return unless proven not fit for purpose or defected.
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POR.992GT3.STH
The product you are viewing cross references to these numbers
- Porsche Cayman GT4 3.8L 2015-16
Fabspeed's Race Headers for the Porsche Cayman GT4 will get you out of the corner fast and maximize your pulling power on the straights! Designed for track and off-road use, these cat less long tube headers provide maximum exhaust flow from the engine cylinders straight into the exhaust system.
Get out of the corner fast and maximize your pulling power on the straights! Designed for track and off-road use, these cat less long tube headers provide maximum exhaust flow from the engine cylinders straight into the exhaust system.
Fabspeed's Race Headers for the Porsche Cayman GT4 are built to optimize the engine's exhaust flow for maximum performance. Our precision-engineered headers add up to 18 horsepower at the wheels and 15 ft/lbs of torque at 6300 RPM, increasing the already impressive performance of the Porsche GT4. Down low these Race Headers give you a kick in the pants, adding 27 whp and 38 ft/lbs of torque at 3700 RPM.
With Race Headers from Fabspeed, your Cayman GT4 will strike fear into the hearts of 911 owners at the track. Set yourself apart from the factory-equipped crowd with these unbeatable performance upgrades and watch your Porsche's power - and your race results - climb.
FEATURES:
• Fits all Porsche 981 Cayman GT4 / Boxster Spyder vehicles (2015+)
• Adds 27 whp and 38 ft-lbs of torque at 3700RPM and 18 whp and 15 ft/lbs at 6300 RPM
• Saves 10 lbs from the rear of the vehicle compared to the full OEM exhaust system
• 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
• Direct replacement for the OEM headers with no cutting or welding required
• All Fabspeed performance products are backed by the Fabspeed Lifetime Limited Warranty
PLEASE 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. In most vehicles, removing the catalytic converters may trigger a Check Engine Light. HOWEVER, in over 200 miles of testing, our development vehicle did NOT trigger a CEL with these Race Headers installed.
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.
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FSPOR981GT4LTRHDR
The product you are viewing cross references to these numbers
- Porsche Cayman GT4 3.8L 2015-16
Low-end power and sound that you can enjoy every day! The perfect complement to either the factory exhaust system or Fabspeed's performance exhaust systems, these high-flow headers are designed around HJS catalytic converters, making them the best upgrade for more enjoyable street driving and emissions compliance.
Designed with noticeable street performance in mind, these Sport Headers provide an additional 26 whp and 39 ft/lbs of torque at 3600 RPM. This translates to significantly better acceleration and throttle response when powering away from a stop light or merging onto your favorite highway. Thanks to the world-class performance of the HJS catalytic converter cores, your GT4 stays emissions-compliant in most regions and will not throw a Check Engine Light.
In addition to the performance gains, Fabspeed's GT4 Sport Headers also add great character to the exhaust note by improving the overall volume and tone.
FEATURES:
• Fits all Porsche 981 Cayman GT4 / Boxster Spyder vehicles (2015+)
• Includes German-imported 200-cell HJS Sport • Catalytic Converters for maximum performance and reliability
• Adds 26 whp and 39 ft-lbs of torque at 3600RPM, providing significantly better performance during street acceleration
• 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 exhaust sound
• Direct replacement for the OEM headers with no cutting or welding required
• All Fabspeed performance products are backed by the Fabspeed Lifetime Limited Warranty
PLEASE 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
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FSPOR981GT4SHDR
The product you are viewing cross references to these numbers
- Porsche Boxster 986 2.5L 1997-99
- Porsche Boxster 986 2.7L 1999-02
- Porsche Boxster S 986 3.2L 1999-02
- Porsche Boxster 986 2.7L 2003-04
- Porsche Boxster S 986 3.2L 2003-04
- Porsche Boxster 987 2.7L 2005 -08/08
- Porsche Boxster 987 S 3.2/3.4L 2005-08/08
- Porsche Boxster 987 MKII 2.9L 2009-2012
- Porsche Boxster S 987 MKII 3.4L 2009-2012
- Porsche Boxster 981 2.7L 2012-16
- Porsche Boxster 981 S / GTS 3.4L 2012-16
- Porsche Boxster 981 Spyder 3.8L 2016
- Porsche Boxster 718 2.0L Manual (300 Bhp)
- Porsche Boxster 718 2.0L PDK (300 Bhp)
- Porsche Boxster S 718 2.5L Manual (350 Bhp)
- Porsche Boxster S 718 2.5L PDK (350 Bhp)
- Porsche Boxster T 718 2.0L Manual (300 Bhp)
- Porsche Boxster T 718 2.0L PDK (300 Bhp)
- Porsche Boxster GTS 718 2.5L Manual (365 Bhp)
- Porsche Boxster GTS 718 2.5L PDK (365 Bhp)
- Porsche Boxster GTS 718 4.0L Manual (400 Bhp)
- Porsche Boxster GTS 718 4.0L PDK (400 Bhp)
- Porsche Boxster Spyder 718 4.0L (420 Bhp)
- Porsche Boxster 25 Years 718 4.0L Manual (400 Bhp)
- Porsche Boxster 25 Years 718 4.0L PDK (400 Bhp)
- Porsche 993 (911) C2 1994-97
- Porsche 993 (911) C4 1994-97
- Porsche 993 (911) RS 1994-97
- Porsche 993 (911) C2S 1994-97
- Porsche 993 (911) C4S 1994-97
- Porsche 993 (911) TURBO 1994-96
- Porsche 993 (911) GT2 1994-97
- Porsche 993 (911) TURBO S 1994-97
- Porsche 996 GT3 MKI 1999-02
- Porsche 996 GT3 MKII 2003>>
- Porsche 996 GT3 RS 2003-04
- Porsche 997 MK1 Carrera 2 3.6L 2005-08
- Porsche 997 MK1 Carrera 2S 3.8L 2005-08
- Porsche 997 MK1 Carrera 4 3.6L 2005-08
- Porsche 997 MK1 Carrera 4S 3.8L 2005-08
- Porsche 997 MK1 TURBO 2007-09
- Porsche 997 MK1 GT3 2007-09
- Porsche 997 MK1 GT2 2007-09
- Porsche 997 MKII Carrera C2 3.6L 2009-12
- Porsche 997 MKII Carrera C4 3.6L 2009-12
- Porsche 997 MKII Carrera C2S 3.8L 2009-12
- Porsche 997 MKII Carrera C4S 3.8L 2009-12
- Porsche 997 MKII GT3 2010-11
- Porsche 997 MKII Turbo 2010-13
- Porsche 997 MKII GT2 RS 2011-13
- Porsche 991.1 Carrera C2 3.4L (350Bhp) 2012-16
- Porsche 991.1 Carrera C2S 3.8L (400Bhp) 2012-16
- Porsche 991.1 Carrera C4 3.4L (350Bhp) 2012-16
- Porsche 991.1 Carrera C4S 3.8L (400Bhp) 2012-16
- Porsche 991.1 Turbo 3.8L (520bhp) 2014-16
- Porsche 991.1 Turbo S 3.8L (560Bhp) 2014-16
- Porsche 991.1 R 4.0L (500 Bhp) 2016
- Porsche 991.1 GT3 3.8L (475Bhp) 2014-16
- Porsche 991.1 GT3 RS 4.0L (500Bhp) 2015-16
- Porsche 991.2 Carrera 2 3.0L (370 Bhp) 2016-19
- Porsche 991.2 Carrera 2S 3.0L (420 Bhp) 2016-19
- Porsche 991.2 Carrera 4 3.0L (370 Bhp) 2016-19
- Porsche 991.2 Carrera 4S 3.0L (420 Bhp) 2016-19
- Porsche 991.2 Cabriolet 2 3.0L (370 Bhp) 2016-19
- Porsche 991.2 Cabriolet 2S 3.0L (420 Bhp) 2016-19
- Porsche 991.2 Cabriolet 4 3.0L (370 Bhp) 2016-19
- Porsche 991.2 Cabriolet 4S 3.0L (420 Bhp) 2016-19
- Porsche 991.2 Targa 4 3.0L (370 Bhp) 2016-19
- Porsche 991.2 Targa 4S 3.0L (420 Bhp) 2016-19
- 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
- Porsche 991.2 Speedster 4.0L (510Bhp) 2019
- Porsche 991.2 GT3 4.0L (500 Bhp) / GT3 RS 4.0L (520 Bhp) 2017-19
- Porsche 991.2 GT2 RS 3.8L PDK (700 bhp) 2018-19
- Porsche Cayman 2.7L 987C 2006-08
- Porsche Cayman S 3.4L 987C 2005-08
- Porsche Cayman 2.9L 987C MKII 2009-12
- Porsche Cayman S / R 3.4L 987C MKII 2009-12
- Porsche Cayman 2.7L 981 2013-16
- Porsche Cayman S / GTS 3.4L 981 2013-16
- Porsche Cayman GT4 3.8L 2015-16
- Porsche Cayman 718 2.0L Manual (300Bhp)
- Porsche Cayman 718 2.0L PDK (300Bhp)
- Porsche Cayman S 718 2.5L Manual (350Bhp)
- Porsche Cayman S 718 2.5L PDK (350Bhp)
- Porsche Cayman T 718 2.0L Manual (300Bhp)
- Porsche Cayman T 718 2.0L PDK (300 Bhp)
- Porsche Cayman GTS 718 2.5L Manual (365 Bhp)
- Porsche Cayman GTS 718 2.5L PDK (365 Bhp)
- Porsche Cayman GTS 718 4.0L Manual (400 Bhp)
- Porsche Cayman GTS 718 4.0L PDK (400 Bhp)
- Porsche Cayman GT4 718 4.0L / GT4 RS 718 4.0L
- Porsche Cayman GT4 Clubsport
- Porsche Cayman GT4 RS Clubsport 2020-2024
- Porsche 924S 2.5L 1986-87
- Porsche 924S 2.5L 1988
- Porsche 944 2.5L 8V 1982-87
- Porsche 944 2.7L 8V 1988-89
- Porsche 944S 2.5L 16V 1987-88
- Porsche 944S2 3.0L 16V 1989-91
- Porsche 944 Turbo 2.5L 8V 1985-88
- Porsche 944 Turbo 2.5L 8V 1989-91
- Porsche 944 Turbo S 2.5L 8V 1988
- Porsche 968 3.0L 1992-94
- Porsche 968 Sport 3.0L 1994-95
- Porsche 968 CS 3.0L 1993-95
- Porsche 968 Turbo S 3.0L 1993-94
Fits:
Porsche 924S 2.5L 1987-88 (Engine M44.09/M44.10)
Porsche 944 2.5L 1987-90 (Engine M44.09/M44.10)
Porsche 944 Turbo 2.5L 1985-91
Porsche 944S 2.5L 1986-88 (Engine M44.40)
Porsche 944 2.7L 1988-89
Porsche 944 3.0L 1988-91
Porsche 996 GT3 3.6L 1999-05
Porsche 968 3.0L 1991-95
Porsche 986 Boxster 2.5L 1996-99 (Engine M96.20)
Porsche 986 Boxster S 2.7L-3.2L 1999-04
Porsche 993 3.6L-3.8L 1993-97
Porsche 997 3.6L 2004-08 (Engine M95.05)
Porsche 997 3.8L 2004-08 (Engine M97.01)
Click 'Zoom in' for large parts diagram.
Diagram ref no 20
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90021901500
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