997.1 & 997.2 GT3 Exhaust (2007-2012)
997.1 & 997.2 GT3 Exhaust (2007-2012)
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Product Description
The SOUL Bolt-On Exhaust Tips are a direct-fit appearance upgrade for Porsche 997 and 997.2 GT3 / GT3 RS models, replacing the factory center exhaust tips with larger 3.5-inch stainless steel outlets available in multiple styles and finishes.
Each set bolts directly to the factory center muffler using a precision laser-cut backing plate and included heavy-duty clamps. No cutting or welding is required, and tip projection can be adjusted by nearly one inch to achieve the desired positioning within the rear bumper.
The backing plate is manufactured from 1/8-inch-thick T304L stainless steel, while each exhaust tip is hand fabricated from 3.5-inch-diameter, .065-inch-wall stainless steel tubing.
SOUL offers three distinct tip styles—Double Wall, Slash-Cut Single Wall, and Straight-Cut Single Wall—along with Signature Satin, Brushed, and Satin Black finishes, allowing the rear appearance of the GT3 to be tailored from understated OEM+ to a more aggressive motorsport-inspired look.
FITMENT:
Fits Porsche 997.1 GT3
Fits Porsche 997.1 GT3 RS
Fits Porsche 997.2 GT3
Fits Porsche 997.2 GT3 RS
Fits Porsche 997.2 GT3 RS 4.0
Compatible with naturally aspirated 3.6L, 3.8L, and 4.0L GT3 engines, depending on model
Designed to bolt directly to the factory center muffler
SOUL provides separate GT3 and GT3 RS model configurations
Does not fit Carrera, Turbo, or GT2 exhaust systems
DETAILS:
Direct bolt-on exhaust-tip replacement
3.5-inch diameter exhaust tips
No cutting or welding required
Installs using basic hand tools
Most installations can be completed in approximately one hour
Tip depth is adjustable by nearly 1 inch
Precision laser-cut backing plate
Backing plate constructed from 1/8-inch T304L stainless steel
Tips constructed from .065-inch-wall stainless steel tubing
Includes Mikalor Supra Heavy-Duty W4 clamps
Heavy-duty clamp design provides strong and consistent clamping force
Loose replacement tips can be purchased separately if the owner wants to change styles later
Direct-fit design retains the factory center muffler
Available in multiple tip styles and finishes
Backed by SOUL Performance Products' Lifetime Warranty for both street and track use
TIP STYLE OPTIONS:
3.5" Double Wall
The Double Wall design provides the fullest and most substantial appearance of the available configurations. The thicker-looking outlet gives the rear of the GT3 a more finished OEM+ appearance while retaining the larger 3.5-inch diameter.
3.5" Slash-Cut Single Wall
The Slash-Cut Single Wall design provides a more aggressive motorsport-inspired appearance with an angled outlet profile.
Its lighter visual design works particularly well for GT3 and GT3 RS applications where a more purposeful race-derived appearance is desired.
3.5" Straight-Cut Single Wall
The Straight-Cut Single Wall design provides the cleanest and most minimalist configuration.
The simple straight outlet emphasizes the functional nature of the GT3 exhaust system and pairs particularly well with track-focused builds.
TIP FINISH OPTIONS:
Signature Satin
SOUL's Signature Satin finish provides a clean natural-stainless appearance without the high shine of a polished or chrome-plated tip.
Because this is an uncoated stainless finish, normal exhaust heat cycling can gradually create a golden heat tint.
Brushed
The Brushed finish provides a more mechanical and motorsport-oriented stainless appearance with visible directional finishing.
Like Signature Satin, the natural stainless steel can gradually develop heat coloration during use.
Satin Black
The Satin Black configuration provides the darkest appearance and creates strong contrast against the GT3's rear bumper and center exhaust opening.
SOUL also offers coating solutions for customers who want greater resistance to long-term heat-related appearance changes.
INSTALLATION / ADJUSTMENT:
The SOUL tips mount to a dedicated stainless-steel backing plate that bolts directly to the factory center muffler.
Each tip is secured using Mikalor Supra Heavy-Duty W4 clamps, allowing the installer to adjust the projection of the tips before tightening the system.
Approximately one inch of fore/aft adjustment is available, making it possible to position the outlets according to personal preference and rear-bumper fitment.
No welding or permanent modification is required.
HEAT COLORATION:
Natural stainless-steel exhaust tips can gradually develop a golden or bronze tint from repeated exposure to exhaust heat.
This is a normal characteristic of uncoated stainless steel and does not indicate a material failure.
Owners who want a finish that is less susceptible to visible heat coloration should consider one of SOUL's coated finish options.
Product Description
The SOUL Center Muffler is designed for Porsche 997 and 997.2 GT3 owners who want a stronger, more durable replacement for the factory center muffler with the ability to choose either more exhaust volume or less exhaust volume than stock.
SOUL developed this system after observing failures of factory GT3 center mufflers, including cars that had not otherwise been heavily modified. For street and track-driven GT3s, a center muffler failure can become more than an inconvenience, particularly during sustained high-temperature use.
Rather than simply duplicating the factory component, SOUL uses thicker-gauge stainless steel construction and offers two distinct internal sound configurations. The Louder Than OEM version increases naturally aspirated flat-six presence, while the Quieter Than OEM version is specifically intended for owners who need additional sound control for tracks with restrictive noise limits.
The muffler bolts directly into the factory location without modification and can be used with otherwise stock exhaust components or as part of a more extensively modified GT3 exhaust system.
FITMENT:
Fits 2006–2011 Porsche 997 / 997.2 GT3
Fits applicable 997 / 997.2 GT3 RS exhaust configurations
Compatible with both 997.1 and 997.2 GT3 generations
Compatible with naturally aspirated 3.6L and 3.8L GT3 engines, depending on model year
Direct replacement for the factory center muffler
Compatible with otherwise stock exhaust systems
Compatible with upgraded headers and other exhaust modifications using the factory center-muffler interface
No vehicle modification required for installation
This DasMotoring listing is specifically for the 997-generation GT3 platform
DETAILS:
Direct bolt-in replacement for the factory GT3 center muffler
Developed as a more durable alternative to the factory center muffler
SOUL identified factory center-muffler failures on both stock and modified GT3 applications
Constructed using thicker-gauge stainless steel than the factory component
Available in Louder Than OEM and Quieter Than OEM configurations
Louder version amplifies the naturally aspirated flat-six exhaust note
Quieter version reduces overall volume for sound-restricted environments
Particularly useful for GT3s used at tracks with strict sound limits
Suitable for vehicles with factory headers or upgraded header systems
Direct bolt-on installation
Includes four AccuSeal clamps
Every component is rigorously quality-checked before shipment
Fixture-tested to verify proper fitment
Foam-packed to help prevent shipping damage
Designed and manufactured in-house by SOUL Performance Products in Willow Grove, Pennsylvania
Backed by SOUL Performance Products' Lifetime Warranty for both street and track use
SOUND LEVEL OPTIONS:
SOUL offers two versions of the Center Muffler so the exhaust can be tailored around the intended use of the vehicle.
Louder Than OEM
The louder configuration is designed to amplify the GT3's naturally aspirated flat-six character compared with the factory center muffler.
This is the appropriate choice for owners who want increased exhaust presence while retaining an actual center muffler rather than moving to a Center Muffler Bypass.
SOUL Part Number: POR.GT3.MUFL
Quieter Than OEM
The quieter configuration is designed to reduce overall exhaust volume compared with the factory center muffler.
This version is particularly useful for GT3 owners attending tracks with strict sound limits or for vehicles with other exhaust modifications that have increased overall volume beyond the desired level.
SOUL Part Number: POR.GT3.MUFQ
WHY REPLACE THE FACTORY CENTER MUFFLER?
SOUL developed this product after observing failures of factory GT3 center mufflers under demanding use.
On heavily driven street cars and track cars, repeated thermal cycling and sustained exhaust temperatures can place considerable stress on the center muffler assembly. Exhaust modifications such as higher-flow headers can further increase the demands placed on downstream components.
The SOUL Center Muffler uses thicker-gauge stainless construction to provide a more robust replacement while preserving a true muffled exhaust configuration.
This makes it particularly attractive for owners who want improved durability without converting the car to a complete center-muffler bypass.
LOUDER VS. QUIETER:
Choose Louder Than OEM if:
You want more GT3 flat-six sound
You still want a true center muffler rather than a bypass
Your car retains relatively quiet factory headers and side mufflers
Track noise restrictions are not a major concern
Choose Quieter Than OEM if:
Your local tracks enforce strict sound limits
Your headers or other exhaust components have already increased volume substantially
You want additional sound attenuation without reinstalling the factory center muffler
Exhaust-system durability is important but additional volume is not
CENTER MUFFLER VS. CENTER MUFFLER BYPASS:
The SOUL Center Muffler retains actual sound attenuation and is available in either louder-than-stock or quieter-than-stock configurations.
The SOUL Center Muffler Bypass removes the factory center muffler entirely and provides a much more aggressive exhaust character along with approximately 11 lbs of weight reduction.
For owners prioritizing maximum sound and reduced weight, the Center Muffler Bypass is the more aggressive solution.
For owners prioritizing durability, controlled sound levels, or compliance with track noise restrictions, the SOUL Center Muffler provides the more appropriate solution.
EXHAUST TIP OPTIONS:
There are no exhaust-tip variants associated with this product.
The SOUL Center Muffler is sold as a replacement center muffler assembly rather than as a center muffler/tip package, so the Squarespace product only needs the Sound Level selection.
Product Description
The SOUL Modular Competition Exhaust Package is a complete lightweight exhaust solution for Porsche 997 and 997.2 GT3 / GT3 RS owners looking for maximum sound, substantial rear weight reduction, improved heat management, and the flexibility to change the exhaust configuration depending on how the car is being used.
The package combines SOUL's Side Muffler Bypass Pipes, Center Muffler Bypass Exhaust, and bespoke exhaust support brackets into one modular system. Because the side and center sections remain independently removable, owners can easily change between different configurations to increase or decrease exhaust volume without replacing the entire system.
When installed as a complete system, the package eliminates both the heavy factory side mufflers and center muffler. The non-valved configuration saves approximately 49 lbs, while the valved configuration saves approximately 46 lbs from the rear of the vehicle.
Removing the large factory mufflers also reduces heat retention within the rear of the car and helps limit heat soak around the engine compartment and rear tires during aggressive driving and track use.
For drivers who still want control over exhaust volume, the optional valved configuration retains factory Porsche Sport Exhaust button functionality. With the valves closed, exhaust is routed through smaller-diameter piping before entering the expansion chamber of the center muffler bypass, noticeably reducing exterior volume. Open the valves and the system delivers the full aggressive character of a lightweight GT3 competition exhaust.
FITMENT:
Fits 2006–2011 Porsche 997 / 997.2 GT3
Fits 2006–2011 Porsche 997 / 997.2 GT3 RS
Compatible with both 997.1 and 997.2 GT3 generations
Compatible with naturally aspirated 3.6L and 3.8L GT3 engines, depending on model year
Available in Valved and Non-Valved configurations
Valved configuration retains factory Porsche Sport Exhaust (PSE) button control
Compatible with factory GT3 headers and catalytic converters
Does not fit Carrera, Turbo, GT2, or GT3 Cup applications unless specifically confirmed otherwise
PACKAGE INCLUDES:
SOUL Side Muffler Bypass Pipes
SOUL Center Muffler Bypass Exhaust
Bespoke support brackets specifically designed for the combined bypass configuration
Selected 3.5-inch SOUL exhaust tips
Mikalor Supra Heavy-Duty W4 clamps
AccuSeal exhaust clamps
Installation hardware
Vacuum-line plugs for the Non-Valved configuration
DETAILS:
Complete modular replacement for the factory center and side muffler assemblies
Can be reconfigured using factory and SOUL components to alter exhaust volume and character
49 lbs / 22.2 kg approximate weight savings with Non-Valved configuration
46 lbs / 20.9 kg approximate weight savings with Valved configuration
Significantly reduces exhaust-system weight at the rear of the vehicle
Removing the factory mufflers reduces retained heat within the engine compartment
Helps reduce exhaust-related heat soak around the rear tires during track use
Constructed from mandrel-bent T304L stainless steel tubing
Expansion-chamber design helps control unwanted cabin drone and vibration
Designed to provide reasonable cabin presence considering the extremely free-flowing configuration
Direct bolt-on installation
No permanent modification required
Individual components can be removed and exchanged to alter the exhaust configuration
Each component is fixture-tested prior to shipment
Components are foam-packed to help prevent shipping damage
Backed by SOUL Performance Products' Lifetime Warranty for both street and track use
MODULAR 3-IN-1 DESIGN:
A major advantage of this system is its modular construction.
The package allows the owner to configure the GT3 exhaust in several different ways depending on the desired sound level:
Complete Modular Competition System
SOUL Side Muffler Bypass Pipes + SOUL Center Muffler Bypass Exhaust for maximum weight reduction and exhaust volume.
SOUL Side Muffler Bypass + Factory Center Muffler
Retains more sound attenuation through the factory center muffler while still eliminating the heavy factory side mufflers.
Factory Side Mufflers + SOUL Center Muffler Bypass
Retains the factory valved side mufflers while removing the factory center muffler for increased sound with greater street refinement.
This makes the package particularly useful for cars that see both street and track use, since the exhaust configuration can be changed without replacing the entire system.
VALVED CONFIGURATION:
The Valved Modular Competition Exhaust Package retains factory Porsche Sport Exhaust button operation.
With the valves closed, 100% of the exhaust is directed through smaller-diameter piping before entering the expansion chamber of the center muffler bypass.
This substantially reduces exterior exhaust volume while retaining the lightweight architecture of the complete system.
With the valves open, the system provides the unrestricted, aggressive sound expected from a competition-focused GT3 exhaust.
SOUL notes that the difference between valve positions is more noticeable outside the vehicle than inside the cabin because the center bypass expansion chamber continues to help manage cabin resonance.
Approximate weight savings: 46 lbs / 20.9 kg
NON-VALVED CONFIGURATION:
The Non-Valved Modular Competition Exhaust Package removes the valve assemblies entirely for the simplest and lightest possible configuration.
This version operates at the aggressive exhaust setting at all times and provides the maximum weight reduction available from the package.
SOUL includes plugs for the factory vacuum lines when installing the non-valved version.
Approximate weight savings: 49 lbs / 22.2 kg
For dedicated track cars or owners who prioritize minimum weight and maximum sound over volume control, the Non-Valved configuration is the more focused option.
SOUND CHARACTER:
With both the factory center and side mufflers removed, the Modular Competition Exhaust Package dramatically increases the presence of the GT3's naturally aspirated flat-six.
Expect:
Significantly increased overall exhaust volume
Much greater mechanical flat-six character
Stronger high-RPM GT3 wail
Increased sound throughout the rev range
A substantially more motorsport-oriented exhaust character
More cabin presence than factory
Despite the extremely free-flowing design, SOUL's center bypass incorporates an expansion chamber intended to reduce unwanted drone and vibration within the cabin.
The final sound level will also depend heavily on the header configuration. Factory headers retain considerably more sound attenuation than SOUL Street or Competition Headers.
HEAT MANAGEMENT:
The factory GT3 side mufflers represent substantial thermal mass positioned close to the engine compartment and rear tires.
Removing the side mufflers reduces both weight and the amount of heat stored in the rear exhaust system.
This is particularly beneficial during extended track sessions, where repeated high-load operation can substantially increase exhaust temperatures and contribute to heat soak around surrounding components and the rear tires.
CHECK ENGINE LIGHT:
When installed with the factory header and catalytic-converter configuration, the SOUL Modular Competition Exhaust Package does not affect the oxygen sensors or catalytic converters.
SOUL states that no check engine lights are associated with installation of this system, as the relevant oxygen sensors remain located within the header assemblies.
If the vehicle is also equipped with aftermarket headers, catalyst-delete components, or other engine-management modifications, diagnostic behavior will depend on those additional components.
EXHAUST TIP OPTIONS:
DasMotoring offers all current tip configurations available for the SOUL 997 GT3 Modular Competition Exhaust Package.
3.5" Slash-Cut Single Wall – Signature Satin
A lightweight motorsport-style slash-cut tip with SOUL's understated Signature Satin finish.
3.5" Slash-Cut Single Wall – Brushed
The same aggressive slash-cut geometry with a hand-finished brushed stainless appearance.
3.5" Straight-Cut Single Wall – Signature Satin
A clean, purposeful straight-cut design with SOUL's Signature Satin finish.
3.5" Straight-Cut Single Wall – Brushed
Straight-cut single-wall construction with a brushed stainless finish.
3.5" Double Wall – Satin Black
A heavier double-wall design with a dark Satin Black finish for a more OEM-inspired but aggressive appearance.
Product Description
The SOUL Side Muffler Bypass Pipes are designed for Porsche 997 and 997.2 GT3 / GT3 RS owners looking for substantial weight reduction, reduced rear heat soak, increased exhaust flow, and a more aggressive naturally aspirated flat-six exhaust note.
Rather than replacing the factory center muffler, the system eliminates the heavy factory side mufflers and replaces them with lightweight 3-inch stainless steel bypass pipes. The factory side exhaust components weigh approximately 44.9 lbs, while the complete SOUL bypass assembly weighs just 6.6 lbs, removing approximately 38.3 lbs / 17.3 kg from the rear of the car.
Eliminating the side mufflers also reduces the amount of heat retained around the engine compartment and rear tires. SOUL incorporates high-quality flex bellows to accommodate thermal expansion and movement during aggressive driving, while an enlarged secondary-pipe opening helps equalize pressure within the factory center muffler.
The result is a dramatically lighter and freer-flowing exhaust configuration with significantly greater cabin presence, stronger high-RPM character, and the exotic race-inspired sound expected from a high-revving GT3.
FITMENT:
Fits 2006–2011 Porsche 997 / 997.2 GT3
Fits 2006–2011 Porsche 997 / 997.2 GT3 RS
Compatible with both 997.1 and 997.2 GT3 generations
Compatible with the naturally aspirated 3.6L and 3.8L GT3 flat-six engines, depending on model year
Retains the factory center muffler
Direct replacement for the factory side mufflers
Does not fit 997 Carrera, Turbo, or GT2 models
DETAILS:
Completely removes the heavy factory side muffler assemblies
Retains the factory center muffler
Large 3-inch diameter primary piping increases exhaust flow
Weighs approximately 6.6 lbs / 3.0 kg
Factory side exhaust components weigh approximately 44.9 lbs / 20.4 kg
Saves approximately 38.3 lbs / 17.3 kg
Removes nearly 40 lbs from the rear of the vehicle
Reduced exhaust mass helps decrease heat soak within the engine compartment
Removing the factory side mufflers also helps reduce heat exposure around the rear tires
Enlarged secondary-pipe opening helps equalize pressure within the factory center muffler
Pressure equalization is designed to reduce stress on the center muffler
High-quality flex bellows allow movement as the exhaust heats, cools, and moves during aggressive driving
Flex sections simplify installation and help prevent cracking under extreme track conditions
Constructed from mandrel-bent 3-inch T304L stainless steel tubing
Uses durable .065-inch-wall tubing
Direct bolt-on installation
No cutting or permanent vehicle modification required
Each exhaust is fixture-tested prior to shipment to ensure proper fitment
Foam-packed to protect the components during transportation
Designed and manufactured in-house by SOUL Performance Products in Willow Grove, Pennsylvania
Backed by SOUL Performance Products' Lifetime Warranty for both street and track use
WEIGHT & HEAT REDUCTION:
Weight savings are one of the biggest advantages of the SOUL Side Muffler Bypass Pipes.
Factory side exhaust components: approximately 44.9 lbs
SOUL Side Muffler Bypass Pipes: approximately 6.6 lbs
Total weight reduction: approximately 38.3 lbs / 17.3 kg
Removing more than 38 lbs from the rear of the vehicle provides a significant reduction in exhaust-system mass while also eliminating two large mufflers that act as heat sinks near the engine compartment.
For GT3s used heavily on track, reducing this retained heat can also help reduce the amount of radiant heat surrounding the rear tires and adjacent components.
SOUND CHARACTER:
The SOUL Side Muffler Bypass Pipes provide a substantial increase in exhaust volume without introducing undesirable changes in exhaust tone.
Expect:
Greater naturally aspirated flat-six presence throughout the rev range
More mechanical and race-derived exhaust character
Increased cabin presence between approximately 2,000–3,000 RPM
Significantly stronger GT3 exhaust character above 5,000 RPM
Greater overall volume than the factory side-muffler configuration
The high-RPM character is where this system is particularly rewarding, allowing substantially more of the GT3's naturally aspirated flat-six sound into the cabin as engine speed climbs.
FLEX BELLOWS:
SOUL incorporates high-quality flex bellows into the Side Muffler Bypass Pipes rather than using completely rigid tubing.
The flex sections allow controlled movement as the exhaust heats and expands, while also accommodating movement during aggressive street and track use.
This helps reduce stresses transferred through the exhaust system, simplifies installation and alignment, and reduces the likelihood of cracking during repeated thermal cycles or extreme racing conditions.
CENTER MUFFLER PRESSURE MANAGEMENT:
The opening leading into the secondary pipe is enlarged as part of SOUL's design.
This helps equalize pressure within the factory center muffler, reducing the pressure imbalance that can contribute to fatigue and cracking over time.
This allows the factory center muffler to remain part of the exhaust system while the much heavier side mufflers are completely eliminated.
SIDE MUFFLER BYPASS VS. VALVED SIDE MUFFLER BYPASS:
The SOUL Side Muffler Bypass Pipes provide the greatest weight reduction of the two configurations, weighing approximately 6.6 lbs and saving approximately 38.3 lbs compared with the factory components.
The SOUL Valved Side Muffler Bypass Pipes incorporate exhaust valves that allow the driver to retain a quieter and louder operating mode. The additional valve hardware increases system weight to approximately 9.5 lbs, resulting in approximately 35.4 lbs of weight savings.
For owners prioritizing minimum weight, simplicity, and an always-aggressive exhaust configuration, the fixed Side Muffler Bypass Pipes provide the more focused solution.
For owners who want substantial weight savings while retaining exhaust-volume control, the Valved Side Muffler Bypass Pipes provide the more flexible alternative.
TIP OPTIONS:
This product replaces only the side mufflers and does not replace the center exhaust outlet or exhaust tips.
The vehicle's existing center muffler and exhaust-tip configuration remain in place.
No exhaust-tip selection is required for this product.
EMISSIONS / USE NOTE:
SOUL states that this product is not CARB certified and may not be legal for use on emissions-controlled vehicles.
It is intended for off-road use only where required by applicable regulations.
Customers are responsible for ensuring compliance with all applicable local, state, and federal requirements before installation or use.
Product Description
The SOUL Valved Side Muffler Bypass Pipes are designed for Porsche 997 and 997.2 GT3 / GT3 RS owners looking for a major reduction in rear-mounted weight and heat while retaining factory-style exhaust valve functionality.
Rather than replacing the center muffler, this system eliminates the large factory side mufflers and replaces them with lightweight 3-inch valved bypass pipes. Removing the side mufflers saves approximately 35.4 lbs / 16 kg from the rear of the car while also reducing the amount of heat retained around the engine compartment and rear tires.
SOUL incorporates high-quality exhaust valves that operate like the factory system. With the valves closed, exhaust is still routed through the factory center muffler, providing a moderately louder but comfortable exhaust note. Opening the valves allows the GT3's naturally aspirated flat-six to breathe through the freer-flowing bypass pipes, producing a significantly more aggressive and exotic exhaust character.
Compared with a center muffler bypass, SOUL specifically designed the Valved Side Muffler Bypass Pipes to provide a smoother transition between the quieter and louder valve positions while delivering substantially greater weight savings.
FITMENT:
Fits 2006–2011 Porsche 997 / 997.2 GT3
Fits 2006–2011 Porsche 997 / 997.2 GT3 RS
Compatible with both 997.1 and 997.2 GT3 generations
Compatible with the naturally aspirated 3.6L and 3.8L GT3 engines, depending on model year
Retains exhaust-valve functionality
Retains the factory center muffler
Does not fit 997 Carrera, Turbo, or GT2 models
SOUL specifies this system for all 2006–2011 Porsche 997 and 997.2 GT3 / GT3 RS vehicles.
DETAILS:
Replaces the heavy factory side mufflers
Retains the factory center muffler
Integrated high-quality exhaust valves operate in a factory-style manner
Large 3-inch diameter primary piping
Weighs approximately 9.5 lbs / 4.3 kg
Factory components weigh approximately 44.9 lbs / 20.4 kg
Saves approximately 35.4 lbs / 16 kg
Removing the large side mufflers helps reduce heat retained in the rear of the vehicle
Reduced rear exhaust mass can also help reduce heat exposure around the rear tires
Enlarged secondary-pipe opening helps equalize pressure within the factory center muffler
Pressure equalization is intended to promote center-muffler longevity
Flexible bellows simplify installation while allowing movement during thermal expansion and demanding track use
Constructed from mandrel-bent 3-inch T304L stainless steel tubing
Uses durable .065-inch-wall tubing
Direct bolt-on installation
No cutting or permanent vehicle modification required
Each assembly is fixture-tested prior to shipment to ensure proper fitment
Foam-packed for protection during shipping
Designed and manufactured in-house by SOUL Performance Products in Willow Grove, Pennsylvania
Exhaust valves and the remainder of the assembly are covered by SOUL's Lifetime Warranty for both street and track use
WEIGHT & HEAT REDUCTION:
One of the biggest advantages of the Valved Side Muffler Bypass system is weight reduction.
The factory side exhaust components weigh approximately 44.9 lbs, while the complete SOUL assembly weighs approximately 9.5 lbs.
That represents a reduction of approximately:
35.4 lbs / 16 kg
Because the factory side mufflers are substantial heat sinks located at the rear of the vehicle, removing them also reduces heat accumulation around the engine compartment and rear tires.
FACTORY-STYLE VALVE OPERATION:
The SOUL Side Muffler Bypass Pipes incorporate exhaust valves that preserve the GT3's ability to switch between quieter and louder exhaust configurations.
Valves Closed:
Exhaust continues through the factory center muffler, producing a moderately increased exhaust note while retaining a comfortable character for normal street driving.
Valves Open:
The bypass pipes provide a much freer exhaust path, revealing a significantly more aggressive and exotic flat-six tone.
SOUL specifically notes that the transition between open and closed operation is smoother than with a Center Muffler Bypass configuration.
SOUND CHARACTER:
With the valves closed, overall volume is increased moderately while the factory center muffler continues to provide substantial sound attenuation.
Opening the valves transforms the system, exposing much more of the GT3's naturally aspirated exhaust character and producing a refined, exotic tone appropriate for the high-revving Mezger engine.
The final sound level will depend significantly on the header configuration. Pairing the Valved Side Muffler Bypass Pipes with factory headers provides a more restrained setup, while combining them with SOUL Street or Competition Headers creates a much more aggressive complete exhaust system.
FLEX BELLOWS:
SOUL incorporates flex bellows into the bypass pipes rather than using completely rigid tubing.
These allow controlled movement as the exhaust heats, cools, and moves under demanding driving conditions. This reduces stress transmitted between exhaust components while also making installation and alignment easier.
SOUL specifically notes that the design provides additional durability under extreme racing conditions in a manner similar to the factory system.
OPTIONAL O2 SENSOR BUNGS:
SOUL can add oxygen-sensor bungs to the Side Muffler Bypass Pipes for vehicles using aftermarket headers that relocate the O2 sensors to this portion of the exhaust.
O2 bungs are not installed by default in order to minimize unnecessary weight.
If your vehicle requires O2 bungs due to an aftermarket header configuration, contact DasMotoring before ordering so the appropriate configuration can be confirmed.
Product Description
The SOUL Street Headers are designed for Porsche 997 and 997.2 GT3 / GT3 RS owners looking for improved exhaust flow, throttle response, power potential, and a more pronounced naturally aspirated flat-six exhaust note while retaining catalytic converters.
Even on Porsche's motorsport-derived GT3 platform, the factory exhaust manifolds are constrained by catalytic-converter packaging, primary-runner dimensions, and mass-production requirements. SOUL addresses these restrictions with larger, freer-flowing runners, optimized transitions, and SOUL-designed 300-cell high-flow catalytic converters.
Each catalyst uses a custom-specified precious-metal coating and triple metal-matrix core, providing greater exhaust-flow capability than the restrictive factory components while maintaining a catted exhaust configuration. SOUL specifically designed the system to provide increased exhaust flow without triggering a check engine light.
The headers are constructed from mandrel-bent .065-inch-wall T304L stainless steel and incorporate billet CNC-machined cylinder-head flanges for a smoother transition from the engine's exhaust ports into the primary runners. The billet flanges also provide additional strength in an area subjected to substantial thermal and mechanical stress during aggressive street and track use.
The result is a direct bolt-on header upgrade that amplifies the GT3's high-revving character while preserving the greater street usability of a catalytic-converter-equipped exhaust system.
FITMENT:
Fits 2006–2011 Porsche 997 / 997.2 GT3
Fits 2006–2011 Porsche 997 / 997.2 GT3 RS
Compatible with both 997.1 and 997.2 GT3 generations
Compatible with the naturally aspirated 3.6L and 3.8L GT3 flat-six engines, depending on model year
Direct replacement for the factory header assemblies
Compatible with the factory rear exhaust system
Compatible with SOUL rear exhaust components designed around the factory header connection
Does not fit Carrera, Turbo, or GT2 models
SOUL specifies the Street Headers for all 2006–2011 Porsche 997 and 997.2 GT3 / GT3 RS vehicles.
DETAILS:
Direct bolt-on replacement for the factory GT3 headers
Retains catalytic converters for a more street-oriented configuration
Uses SOUL-designed 300-cell high-flow catalytic converters
Catalysts feature a custom-specified precious-metal coating
Catalysts utilize a durable triple metal-matrix core
Designed to provide increased exhaust flow without triggering a check engine light
Larger, freer-flowing exhaust architecture reduces restriction compared with the factory header design
Optimized runner geometry improves exhaust flow from the cylinder heads
Designed to improve power potential, throttle response, and engine sound
Amplifies the sound of the GT3's high-revving naturally aspirated flat-six
Constructed from mandrel-bent .065-inch-wall T304L stainless steel tubing
Features billet CNC-machined cylinder-head flanges
Billet flange geometry provides a smoother transition from the exhaust ports into the primary runners
Reinforced flange construction provides additional durability during repeated high-temperature track use
Back-purged TIG welded using ARCAL Prime argon gas for proper penetration and long-term strength
Precision water-jet-cut brackets manufactured to approximately ±0.003-inch tolerances
Fabricated in thick-gauge aluminum fixtures that act as heat sinks during welding
Fixture construction helps minimize warping and maintain consistent fitment
Every set undergoes rigorous quality control
Every set is fixture-tested prior to shipment
New installation hardware included
Foam-packed prior to shipment for protection
Backed by SOUL Performance Products' Lifetime Warranty for both street and track use
300-CELL SPORT CATALYTIC CONVERTERS:
A major distinction between the SOUL Street Headers and Competition Headers is the use of 300-cell high-flow catalytic converters.
Rather than eliminating the catalysts entirely, SOUL incorporates large-diameter converters designed around increased exhaust flow. Each catalyst uses a custom-specified precious-metal coating and a triple metal-matrix core.
This allows the Street Headers to substantially reduce the restriction associated with the original header and catalyst assemblies while retaining catalytic converters and SOUL's no-CEL design intent.
HEADER DESIGN:
The factory GT3 exhaust manifold represents a compromise between performance, packaging, emissions requirements, manufacturing constraints, and durability.
SOUL focuses on improving the flow path between the cylinder head and downstream exhaust system through larger-diameter runners and optimized transitions.
The billet CNC-machined cylinder-head flanges provide a more efficient transition from the exhaust ports into the primary tubes while adding strength to an area subjected to repeated thermal cycling during aggressive driving.
Combined with the high-flow catalytic converters, the revised header architecture is designed to improve exhaust flow and throttle response without requiring the owner to move to a completely catless exhaust configuration.
SOUND CHARACTER:
The SOUL Street Headers increase the GT3's exhaust presence while preserving the basic character of the factory rear exhaust system.
Expect:
Greater naturally aspirated flat-six presence
Sharper throttle-dependent exhaust character
Stronger high-RPM GT3 wail
Increased mechanical character
Greater exhaust intensity as engine speed rises
Because the catalytic converters remain in place, the Street Headers provide a more controlled exhaust character than SOUL's completely catless Competition Headers.
The final volume and tone will depend heavily on the downstream exhaust configuration. Pairing the Street Headers with the factory rear exhaust will provide a more restrained result than combining them with a SOUL Center Muffler Bypass or Side Muffler Bypass system.
CHECK ENGINE LIGHT:
SOUL specifically designed the Street Headers to provide increased exhaust flow without triggering a check engine light.
The integrated 300-cell catalytic converters retain catalyst functionality while allowing substantially more exhaust flow than the original header assemblies.
As with any modified exhaust system, individual vehicle condition, engine calibration, oxygen sensors, and other modifications can affect diagnostic behavior, so no aftermarket exhaust component should be interpreted as an absolute guarantee against unrelated fault codes.
STREET VS. COMPETITION HEADERS:
The SOUL Street Headers retain 300-cell high-flow catalytic converters, providing increased exhaust flow, response, and sound while maintaining a catted configuration and SOUL's no-CEL design intent.
The SOUL Competition Headers completely eliminate the catalytic converters and use a long-tube architecture with billet merge collectors for a less restrictive, more competition-focused exhaust configuration.
For customers who want a significant header upgrade while retaining catalytic converters, the Street Headers are the appropriate SOUL option.
For dedicated track or competition builds prioritizing maximum exhaust flow and a catless configuration, SOUL offers the Competition Headers.
Product Description
The SOUL Competition Headers are designed for Porsche 997-generation GT3 owners seeking maximum exhaust flow, sharper engine response, reduced restriction, and a substantially more aggressive naturally aspirated flat-six exhaust character.
Even the factory GT3 exhaust manifolds are constrained by packaging, catalytic-converter placement, primary-tube dimensions, and mass-production requirements. SOUL replaces the factory assemblies with a purpose-built long-tube header system designed around optimized primary runners and high-efficiency merge collectors.
At the heart of the system are SOUL's billet CNC-machined merge collectors. The collector geometry incorporates merge spikes and a carefully developed transition from the individual primary runners into the exhaust outlet. This allows SOUL to maximize runner length while creating a smoother exhaust path and eliminating several welded joints from the collector assembly.
Billet CNC-machined cylinder-head flanges provide a more efficient transition from the exhaust ports into the primary tubes while adding strength in an area subjected to substantial heat and mechanical stress during repeated track use.
The result is a no-compromise, catless header system engineered around the high-RPM character of the GT3 engine, providing increased exhaust flow, sharper response, stronger performance potential, and a considerably more aggressive exhaust note.
FITMENT:
Fits Porsche 997 GT3
Fits Porsche 997 GT3 RS
Fits Porsche 997.2 GT3
Fits Porsche 997.2 GT3 RS
Fits 997-generation Porsche GT3 Cup
SOUL lists compatibility across the 997 / 997.2 GT3 platform
Compatible with the naturally aspirated GT3 flat-six engines used throughout the applicable 997-generation cars
Designed as a direct replacement for the factory header / catalytic-converter assemblies
Does not fit 997 Carrera, Turbo, or GT2 models
SOUL specifies the product for all Porsche 997 GT3, GT3 RS, and GT3 Cup applications.
DETAILS:
Long-tube competition header design
Completely replaces the factory header and catalytic-converter assemblies
Catless configuration provides the least restrictive exhaust path
Designed to improve exhaust flow, engine response, and performance
Uses smooth-radius, large-diameter primary tubing
Optimized transition from the cylinder-head flange into each primary runner
Performance-oriented collector design incorporates merge spikes
Features bespoke billet CNC-machined merge collectors
Collector design allows SOUL to maximize primary-runner length
CNC-machined collector construction eliminates several conventional welded joints for improved durability
Billet CNC-machined cylinder-head flanges
Head-flange geometry provides a smoother transition from the cylinder-head exhaust ports into the primary runners
Billet flanges provide additional strength for repeated high-temperature track use
Constructed from .065-inch-wall T304L stainless steel
Primary tubing is mandrel bent for smooth exhaust flow
Head flanges and merge collectors are machined from 304L stainless steel
Flanges and collectors are precision machined using a 5-axis CNC
Back-purged TIG welded for proper penetration, internal weld quality, and durability
Fabricated in heavy-gauge fixtures that act as heat sinks during welding
Fixture construction helps minimize heat distortion and maintain consistent fitment
Each set is rigorously quality-checked prior to shipment
Direct bolt-on installation
Designed and manufactured in-house by SOUL Performance Products in Willow Grove, Pennsylvania
Backed by SOUL Performance Products' Lifetime Warranty for both street and track use
LONG-TUBE HEADER DESIGN:
SOUL developed these headers around longer primary runners and an optimized merge collector rather than simply enlarging the factory header geometry.
Increasing usable primary-runner length allows the exhaust pulses from each cylinder to travel through a more deliberate path before entering the collector. Combined with smooth-radius bends and a properly designed merge, this reduces unnecessary disruption to exhaust flow.
The billet collector incorporates carefully shaped transitions and merge spikes to bring the individual runners together efficiently.
Rather than fabricating the collector entirely from multiple welded stainless-steel sections, SOUL machines the collector from billet material. This provides precise internal geometry while removing several welded joints from a particularly high-temperature portion of the exhaust system.
BILLET CNC FLANGES & COLLECTORS:
Both the cylinder-head flanges and merge collectors are precision machined from 304L stainless steel.
The cylinder-head flange is shaped to provide a smoother transition between the engine's exhaust ports and the primary tubing. This minimizes abrupt changes in geometry immediately as the exhaust gases leave the cylinder head.
The billet construction also adds rigidity and durability to the flange assembly, which is particularly valuable on vehicles subjected to repeated high-temperature track use.
SOUL uses 5-axis CNC machining to produce the complex collector and flange geometry required by the design.
SOUND CHARACTER:
Removing the factory catalytic converters and replacing the restrictive factory manifolds with long-tube headers substantially increases the amount of mechanical flat-six sound transmitted through the exhaust.
Expect:
Increased overall exhaust volume
Sharper and more immediate exhaust character
Greater mechanical flat-six presence
Stronger high-RPM GT3 wail
A more aggressive motorsport-oriented tone
The final sound level will depend heavily on the downstream exhaust configuration. Pairing the Competition Headers with the factory rear exhaust will produce a different result than combining them with SOUL's Center Muffler Bypass or other competition-oriented exhaust components.
CHECK ENGINE LIGHT / ECU TUNING:
Because the SOUL Competition Headers remove the factory catalytic converters, installation may trigger a check engine light related to catalyst monitoring.
SOUL recommends an appropriate custom ECU calibration to address catalyst-related fault codes on vehicles configured for track use.
Customers should assume that catalyst-related fault codes are possible when installing this product and plan their vehicle configuration accordingly.
COMPETITION USE:
These headers are designed around maximum performance rather than retaining the factory emissions equipment.
The factory catalytic converters are eliminated entirely, allowing SOUL to optimize the primary-runner and collector geometry without having to package catalysts directly into the header assemblies.
This makes the Competition Headers particularly suitable for dedicated track cars, GT3 Cup applications, and other competition-oriented builds where exhaust flow and durability take priority.
EMISSIONS / USE NOTE:
The SOUL Competition Headers remove the factory catalytic converters.
This product is not CARB certified and may not be legal for use on emissions-controlled vehicles.
SOUL identifies the product as intended for closed-course competition use only, and United States customers purchasing the system are required by SOUL to complete its Catless Exhaust Component Waiver.
Customers are responsible for ensuring compliance with all applicable local, state, and federal regulations
Product Description
The SOUL Center Muffler Bypass Exhaust is designed for Porsche 997 and 997.2 GT3 / GT3 RS owners looking for a substantial increase in naturally aspirated flat-six sound without eliminating the factory side mufflers or exhaust-valve functionality.
By replacing the factory center muffler with a lightweight, free-flowing stainless steel assembly, the system allows more of the GT3's high-RPM exhaust character to come through while retaining the factory valved side mufflers. The factory Sport Exhaust button continues to control the side-muffler valves, giving the driver meaningful control over exhaust volume.
With the valves closed, the factory side mufflers continue to provide a more restrained exhaust character suitable for street driving and highway use. Open the valves and the Center Muffler Bypass delivers a significantly more aggressive flat-six wail, particularly as the engine approaches the upper end of the rev range.
The system also removes approximately 11 lbs from the rear of the vehicle, making it a straightforward way to improve both sound and weight without moving to a complete header or competition exhaust system.
FITMENT:
Fits 2006–2011 Porsche 997 / 997.2 GT3
Fits 2006–2011 Porsche 997 / 997.2 GT3 RS
Compatible with both 997.1 and 997.2 GT3 generations
Compatible with the naturally aspirated 3.6L and 3.8L GT3 flat-six engines, depending on model year
Retains the factory valved side mufflers
Retains factory exhaust-valve operation through the Porsche Sport Exhaust control
Direct bolt-on replacement for the factory center muffler
Does not require permanent modification to the vehicle
DETAILS:
Replaces the factory center muffler with a lightweight free-flowing bypass assembly
Removes approximately 11 lbs / 5 kg from the rear of the vehicle
Retains the factory side mufflers
Retains the factory exhaust valves
Factory Sport Exhaust control remains functional
Provides a significant increase in naturally aspirated flat-six sound with the valves open
Maintains greater street refinement with the valves closed
Particularly emphasizes the GT3's high-RPM exhaust wail
Can be used as a standalone exhaust upgrade
Can be paired with upgraded headers for a substantially more aggressive track-oriented configuration
Constructed from mandrel-bent T304L stainless steel tubing
Includes new mounting brackets and installation hardware
Includes AccuSeal clamps for the connections to the factory side mufflers
Direct bolt-on installation
Each exhaust is fixture-tested to verify proper fitment
Foam-packed prior to shipment to help protect the system and exhaust tips
Backed by SOUL Performance Products' Lifetime Warranty for both street and track use
FACTORY VALVE FUNCTIONALITY:
One of the biggest advantages of the Center Muffler Bypass is that it changes the sound of the GT3 without eliminating the factory side mufflers.
The original exhaust valves remain operational, allowing the factory Sport Exhaust system to continue changing the exhaust path.
Valves Closed:
The side mufflers remain involved in controlling the exhaust note, providing a more restrained character for cruising and street driving.
Valves Open:
The freer-flowing center section allows substantially more flat-six sound through, producing a much more aggressive GT3 exhaust note and emphasizing the engine's high-RPM character.
This makes the Center Muffler Bypass a strong option for owners who want significantly more sound without permanently committing the car to the volume level of a complete muffler-delete system.
SOUND CHARACTER:
The Center Muffler Bypass increases overall volume while preserving the distinctive character of the naturally aspirated GT3 engine.
Expect:
Greater flat-six presence throughout the RPM range
Significantly stronger high-RPM wail
More mechanical exhaust character
Much greater intensity with the factory valves open
A more restrained exhaust note with the valves closed
With factory headers retained, the system provides a noticeable increase in sound without transforming the GT3 into an uncompromising track exhaust.
Paired with upgraded headers, the Center Muffler Bypass becomes considerably more aggressive and moves much closer to a full motorsport-style exhaust character.
CENTER MUFFLER BYPASS VS. SIDE MUFFLER BYPASS:
The Center Muffler Bypass Exhaust removes the center muffler while retaining the factory valved side mufflers. This preserves factory exhaust-valve functionality and provides a useful difference between the valves-open and valves-closed sound levels.
The Side Muffler Bypass Pipes remove the much heavier factory side mufflers, providing substantially greater weight reduction and a different exhaust character.
For owners primarily looking for more sound while retaining factory valve control, the Center Muffler Bypass is the more straightforward upgrade.
For owners prioritizing maximum weight reduction and a more aggressive exhaust configuration, the Side Muffler Bypass Pipes provide another option.
TIP OPTIONS:
DasMotoring offers all six current SOUL exhaust-tip configurations for this system.
3.5" Double Wall – Black
A substantial double-wall outlet with a dark Black finish. This configuration provides the lowest current price for the system.
3.5" Double Wall – Gunmetal
The same 3.5-inch double-wall design with a lighter Gunmetal finish.
3.5" Slash-Cut Single Wall – Signature Satin
A motorsport-inspired slash-cut single-wall tip finished in SOUL's Signature Satin stainless finish.
3.5" Slash-Cut Single Wall – Brushed
The same slash-cut geometry with a hand-finished Brushed stainless appearance.
3.5" Straight-Cut Single Wall – Signature Satin
A clean straight-cut motorsport design with SOUL's Signature Satin finish.
3.5" Straight-Cut Single Wall – Brushed
Straight-cut single-wall construction with a Brushed stainless finish.
SOUL recommends its 3.5-inch tips for 997 GT3 applications, providing an aggressive appearance while fitting naturally within the factory rear valance.
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