Product Description

SOUL Performance Products Weissach-Style Bolt-On Exhaust Tips bring the distinctive motorsports-inspired appearance of the factory Weissach Package exhaust outlets to the Porsche 718 Cayman GT4 RS and 718 Spyder RS in a durable 304L stainless-steel design.

SOUL developed these tips as an alternative to the factory titanium Weissach tips, retaining the aggressive finned appearance while using stainless steel for improved long-term durability through repeated heat cycles and track use.

Two inlet sizes are available. The 2.25-inch version is designed for the factory-style exhaust outlet, while the larger 3-inch version is specifically designed for SOUL exhaust systems and allows the full 3-inch exhaust pathway to continue through the tips without necking the system down at the outlet.

The tips are secured using high-quality AccuSeal clamps for a secure bolt-on installation and are offered in either SOUL's raw Signature Satin finish or a durable Cerakote Matte Black finish.

Fitment

Fits:

• Porsche 718 Cayman GT4 RS – 2022+

• Porsche 718 Spyder RS – 2024+

A factory Weissach Package is not required.

Choose the inlet size based on the rear exhaust system installed on the vehicle.

Choose the Correct Size

For OEM Exhaust — 2.25-Inch Inlet

Designed for factory-style 2.25-inch exhaust outlets.

Choose this version when retaining the factory rear exhaust system.

This configuration allows owners without factory Weissach tips to add the Weissach-inspired appearance while maintaining compatibility with the OEM-sized exhaust outlet.

For SOUL Exhaust — 3-Inch Inlet

Designed for SOUL's flow-optimized 3-inch rear exhaust systems.

Choose this version when using a compatible SOUL exhaust with a 3-inch outlet.

The larger inlet prevents the exhaust from being necked down to the smaller factory tip diameter, allowing the full 3-inch exhaust flow path to continue through the outlet.

Finish Options

Signature Satin

SOUL's raw stainless-steel finish provides a clean motorsports-inspired appearance while showcasing the stainless construction of the tips.

Matte Black

A durable Cerakote Matte Black finish provides a darker, more understated appearance while retaining the distinctive Weissach-style shape.

Details

• Weissach-inspired finned exhaust tip design

• Constructed from 304L stainless steel

• Available for factory-style 2.25-inch exhaust outlets

• Available for SOUL 3-inch exhaust outlets

• 3-inch version maintains the full flow area of compatible SOUL exhaust systems

• Signature Satin finish available

• Cerakote Matte Black finish available

• High-quality AccuSeal clamps included

• Designed for durability through repeated exhaust heat cycles

• Approximately 3.2 lbs per pair including AccuSeal clamps

• Factory Weissach titanium tips weigh approximately 3 lbs per pair

• Bolt-on installation

• Backed by SOUL Performance Products' Lifetime Warranty for street and track use

Stainless Steel vs. Factory Titanium Weissach Tips

The factory Weissach Package uses lightweight titanium exhaust tips with the distinctive finned design.

SOUL recreates this appearance using 304L stainless steel with durability as the primary goal. SOUL specifically developed the stainless design to reduce the risk of fin cracking associated with repeated heat cycling of thin titanium components, particularly on vehicles subjected to sustained track use.

At approximately 3.2 lbs per pair including clamps, the SOUL stainless tips remain close in weight to the approximately 3 lb factory Weissach titanium tips.

Product Description

SOUL Performance Products' Street Package combines its free-flowing Over Axle Pipes with the Valved Exhaust System to transform the sound and exhaust flow of the Porsche 718 Cayman GT4 RS and 718 Spyder RS while retaining the ability to significantly reduce volume when desired.

The factory exhaust contains several restrictions downstream of the engine, including the over-axle assemblies and the undersized rear muffler originally developed around the standard GT4 platform. SOUL replaces these components with an exhaust system engineered around a full 3-inch flow path when equipped with SOUL exhaust tips.

At the rear of the vehicle, SOUL's Valved Exhaust System uses a bespoke X-pipe design to produce a smoother, higher-pitched motorsports-inspired tone with the valves open. With the valves closed, exhaust is routed through a secondary muffled flow path incorporating Helmholtz and anti-drone features to substantially reduce exterior volume and cabin resonance.

The Street Package can be configured with either Competition or Resonated Over Axle Pipes. Competition OAPs provide the greatest overall sound level and lowest restriction, while Resonated OAPs smooth the exhaust tone and further reduce lower-RPM resonance for a more refined overall system.

For owners looking for a significant increase in GT3-derived flat-six sound without sacrificing the ability to cruise comfortably, the Street Package provides both aggressive valves-open character and a considerably quieter valves-closed mode.

Fitment

Fits:

• Porsche 718 Cayman GT4 RS – 2022+

• Porsche 718 Spyder RS – 2024+

Compatible with factory or upgraded headers.

Excludes GT4 RS Clubsport models.

Package Includes

• SOUL Valved Exhaust System

• Choice of SOUL Competition or Resonated Over Axle Pipes

• Choice of OAP heat solution

• Choice of SOUL exhaust tips or reuse of factory Porsche tips

• New high-grade installation hardware

Over Axle Pipe Options

Competition Over Axle Pipes

The Competition OAP configuration is designed for customers looking for the most aggressive sound and lowest restriction from the Street Package.

• Non-resonated design

• Removes the factory secondary catalytic elements and particulate-filter chambers

• Full 3-inch exhaust flow path

• Greater overall sound level with the valves open

• More aggressive exhaust character

• Approximately 11.65 lbs compared with approximately 25 lbs for the factory OAPs

• Approximately 13.3 lbs of weight savings

Resonated Over Axle Pipes

The Resonated OAP configuration provides the same freer-flowing architecture while incorporating resonators to further control sound quality and undesirable frequencies.

• Integrated resonators

• Removes the factory secondary catalytic elements and particulate-filter chambers

• Full 3-inch exhaust flow path

• Smoother and more refined exhaust tone

• Reduced lower-RPM resonance

• Slightly lower overall volume than Competition OAPs

• Approximately 16.75 lbs compared with approximately 25 lbs for the factory OAPs

• Approximately 8.25 lbs of weight savings

Valved Exhaust Operation

Valves Open

• Full 3-inch high-flow pathway

• X-pipe exhaust design

• Smooth, higher-pitched motorsports-inspired exhaust note

• Significantly increased exterior volume

• Maximum sound and exhaust flow

Valves Closed

• Exhaust routed through the secondary muffled flow path

• Reduced exterior sound level

• Reduced interior resonance

• Helmholtz characteristics target undesirable frequencies

• Anti-drone design developed around the low-to-mid RPM range

• Designed to provide a considerably more comfortable cruising experience

Heat Management

The GT3-derived 4.0-liter engine used in the GT4 RS and Spyder RS generates substantial exhaust heat, particularly around the tightly packaged Over Axle Pipe section.

SOUL strongly recommends its thermal-management solution to help reduce radiant heat transfer to nearby components and bodywork.

The Street Package can be ordered with either non-heat-shielded Over Axle Pipes or SOUL's optional heat solution.

Exhaust Tip Options

Slash Cut Double Wall

SOUL's traditional performance exhaust tip design with double-wall construction and a full-size outlet engineered around the 3-inch exhaust system.

Available in:

• Signature Satin

• Matte Black

Weissach

A motorsports-inspired stainless-steel tip design influenced by the factory Weissach-style outlets while maintaining the larger flow area of SOUL's exhaust system.

Available in:

• Signature Satin

• Matte Black

Reuse OEM

The factory Porsche exhaust tips can also be retained for an OEM appearance.

The factory tips use a smaller inlet diameter, requiring the SOUL exhaust to neck down at the outlet. This creates an additional restriction compared with SOUL's full-size Slash Cut Double Wall or Weissach tips.

Details

• Complete Over Axle Pipe and valved rear exhaust package

• Choice of Competition or Resonated Over Axle Pipes

• Full 3-inch exhaust pathway when used with SOUL exhaust tips

• Bespoke X-pipe architecture

• Distinct valves-open and valves-closed sound characteristics

• Helmholtz and anti-drone design features

• Targets drone frequencies in the low-to-mid 2,000 RPM range

• Competition OAP configuration provides maximum Street Package volume

• Resonated OAP configuration provides a smoother, more refined tone

• Optional OAP heat solution

• Constructed from thick-wall 0.065-inch T304L stainless steel

• Mandrel-bent tubing

• Back-purged TIG-welded construction

• Precision water-jet-cut brackets

• Components manufactured to ISO 9001:2015 standards

• Tolerances of approximately ±0.003 inch

• Fixture-built to maintain dimensional accuracy during welding

• New high-grade installation hardware included

• Designed and built in-house in Willow Grove, Pennsylvania

• Backed by SOUL Performance Products' Lifetime Warranty for street and track use

Check Engine Light Notice

When installed as a cat-back system with the factory catalytic headers retained, the Street Package does not trigger a check engine light on North American-market vehicles.

European-market vehicles require ECU tuning.

The Competition and Resonated Over Axle Pipes remove downstream secondary catalyst/filter assemblies, but they do not remove the monitored primary catalytic converters contained within the factory headers.

If the vehicle is also fitted with catless Competition Headers, a check engine light should be expected unless the vehicle is appropriately calibrated.

Product Description

SOUL Performance Products' Race Exhaust Package combines its Competition Over Axle Pipes with the Race Exhaust System to eliminate two of the primary restrictions in the Porsche 718 Cayman GT4 RS and 718 Spyder RS exhaust system.

The factory over-axle assemblies contain secondary catalytic elements along with particulate-filter chambers that are empty on North American-market cars, while the factory rear muffler retains the smaller tubing architecture carried over from the standard 718 GT4. The SOUL Race Exhaust Package replaces both sections with a free-flowing system engineered around a full 3-inch exhaust pathway.

SOUL's Competition Over Axle Pipes use specially formed oval tubing through the tightly packaged suspension area, allowing the system to preserve its full flow area without reducing tubing diameter.

At the rear, the Race Exhaust System replaces the factory muffler with a purpose-built X-pipe that maintains the 3-inch flow path through the exhaust tips. The result is a sharper, smoother, higher-pitched motorsports-inspired exhaust note with substantially increased volume and reduced restriction.

Customers can choose between non-resonated and resonated configurations. The non-resonated system provides maximum volume and minimum weight, while the resonated version incorporates non-restrictive resonators and anti-drone tubes to reduce undesirable low-frequency resonance while retaining the aggressive character of the system.

Fitment

Fits:

• Porsche 718 Cayman GT4 RS – 2022+

• Porsche 718 Spyder RS – 2024+

Compatible with factory or upgraded headers.

Package Includes

• SOUL Competition Over Axle Pipes

• SOUL Race Exhaust System

• Choice of resonated or non-resonated Race Exhaust

• Choice of Over Axle Pipe heat solution

• Choice of Slash Cut Double Wall or Weissach exhaust tips

• Choice of Signature Satin or Matte Black tip finish

• New high-grade installation hardware

Non-Resonated Configuration

The non-resonated configuration is designed for maximum sound and minimum weight.

• Maximum exhaust volume

• Full 3-inch flow path

• Bespoke X-pipe design

• No rear muffler

• No resonators

• Lightest Race Exhaust configuration

• Most aggressive overall sound

• Ideal for owners prioritizing sound, weight reduction, and maximum flow

Resonated Configuration

The resonated configuration retains the same high-flow system architecture while adding non-restrictive resonators and anti-drone tubes.

• Full 3-inch flow path

• Bespoke X-pipe design

• Added resonators help smooth the exhaust note

• Anti-drone tubes target undesirable low-frequency resonance

• Reduced drone compared with the non-resonated configuration

• Retains an aggressive motorsports-inspired exhaust character

• Better suited for owners looking for additional refinement during street use

Heat Management

The GT3-derived 4.0-liter engine used in the GT4 RS and Spyder RS produces substantial exhaust heat, particularly around the tightly packaged Over Axle Pipe section.

SOUL strongly recommends adding a thermal-management solution to the Competition Over Axle Pipes to help protect nearby components and bodywork.

The package can therefore be ordered with either non-heat-shielded Over Axle Pipes or SOUL's heat solution.

Exhaust Tip Options

Slash Cut Double Wall

SOUL's traditional performance exhaust tip design featuring a double-wall construction and full-size outlet designed to maintain the 3-inch exhaust pathway.

Available in:

• Signature Satin

• Matte Black

Weissach

A motorsports-inspired stainless-steel exhaust tip design influenced by the factory Weissach-style outlets while maintaining the larger diameter required by SOUL's full 3-inch exhaust system.

Available in:

• Signature Satin

• Matte Black

Details

• Complete Over Axle Pipe and rear exhaust package

• Full 3-inch exhaust pathway

• Competition Over Axle Pipes remove the factory secondary catalytic elements

• Removes the factory particulate-filter chambers

• Specially formed oval OAP tubing maintains flow through tight chassis clearances

• Race Exhaust replaces the restrictive factory rear muffler

• Bespoke X-pipe produces a smoother, higher-pitched exhaust character

• Choice of resonated or non-resonated configuration

• Optional Over Axle Pipe heat solution

• Approximately 39.15 lbs for the non-resonated package compared with approximately 59 lbs for the corresponding factory components

• Approximately 19.85 lbs of weight savings in the non-resonated configuration

• No check engine light expected on North American-market vehicles when used with factory catalytic headers

• ECU tuning required for European-market vehicles

• Constructed from thick-wall 0.065-inch T304L stainless steel

• Mandrel-bent tubing

• Back-purged TIG-welded construction

• Precision water-jet-cut brackets

• Components manufactured to ISO 9001:2015 standards

• Tolerances of approximately ±0.003 inch

• Fixture-built to prevent warping and maintain consistent fitment

• New high-grade installation hardware included

• Designed and built in-house in Willow Grove, Pennsylvania

• Backed by SOUL Performance Products' Lifetime Warranty for street and track use

Product Description

SOUL Performance Products Performance Packages provide a comprehensive exhaust solution for the Porsche 718 Cayman GT4 RS and 718 Spyder RS, combining upgraded headers, Over Axle Pipes, and a valved rear exhaust into a complete system engineered around the GT3-derived 4.0-liter flat-six.

Every package begins with SOUL Competition Headers, replacing the restrictive factory header assemblies with a fully catless design utilizing longer primary tubing and enlarged merge collectors. From there, customers can choose between the fully catless Competition configuration or the high-flow catted Street configuration.

At the rear of the vehicle, SOUL's Valved Exhaust System replaces the factory muffler with a full-flow X-pipe design featuring two distinct operating modes. With the valves open, exhaust flows through the unrestricted 3-inch pathway for a smoother, higher-pitched motorsports-inspired sound. With the valves closed, exhaust is routed through SOUL's muffled secondary pathway, incorporating anti-drone and Helmholtz characteristics to substantially reduce exterior volume and cabin resonance.

When equipped with SOUL exhaust tips, the package maintains a full 3-inch exhaust flow path through the upgraded system. Factory exhaust tips can also be reused, although their smaller inlet requires the system to neck down at the outlets and introduces an additional restriction.

A thermal-management solution for the Over Axle Pipes is included as standard with every Performance Package.

Fitment

Fits:

• Porsche 718 Cayman GT4 RS – 2022+

• Porsche 718 Spyder RS – 2024+

Does not fit 718 Cayman GT4 RS Clubsport models.

Package Options

Competition Package

Designed for maximum exhaust flow, sound, and weight reduction.

Includes:

• SOUL Competition Headers

• SOUL Competition Over Axle Pipes

• Over Axle Pipe heat solution

• SOUL Valved Exhaust System

• Selected exhaust tip configuration

The Competition Package removes the factory catalytic converters and utilizes fully catless Competition Over Axle Pipes, creating the most unrestricted configuration available within the SOUL Performance Package lineup.

This configuration is fully catless and will trigger a check engine light unless the vehicle is appropriately calibrated for the modified exhaust system.

This is the package for owners prioritizing maximum sound, minimum restriction, and the most aggressive overall exhaust configuration.

Street Package

Designed to deliver the flow and sound benefits of the Competition Headers while retaining high-flow monitored catalytic converters farther downstream in the exhaust system.

Includes:

• SOUL Competition Headers

• SOUL Sport Cat Over Axle Pipes

• Integrated high-flow catalytic converters

• Over Axle Pipe heat solution

• SOUL Valved Exhaust System

• Selected exhaust tip configuration

The Competition Headers still remove the factory header-mounted catalytic converters, but SOUL's Sport Cat Over Axle Pipes relocate high-flow monitored catalytic converters into the OAP section.

SOUL states that this configuration does not trigger a check engine light on North American-market vehicles. European-market vehicles require ECU tuning.

The Street Package provides an excellent balance for owners seeking substantial increases in sound and exhaust flow without running the system completely catless.

Valved Exhaust Operation

Valves Open

• Full 3-inch high-flow exhaust pathway

• Aggressive motorsports-inspired character

• Smoother and higher-pitched X-pipe tone

• Maximum exhaust volume

• Maximum exhaust flow

Valves Closed

• Exhaust routed through the muffled secondary pathway

• Significantly reduced exterior volume

• Reduced cabin resonance

• Anti-drone design

• Helmholtz characteristics help control undesirable frequencies

• Provides a more comfortable cruising mode without sacrificing the aggressive valves-open experience

Exhaust Tip Options

SOUL offers two upgraded exhaust tip styles for the Performance Package along with the option to reuse the factory tips.

Slash Cut

A more traditional performance exhaust appearance with SOUL's full-size outlet design.

Available in:

• Signature Satin

• Matte Black

Weissach

A motorsports-inspired design modeled after the factory Weissach-style outlets and constructed from stainless steel.

Available in:

• Signature Satin

• Matte Black

Reuse OEM

Allows the factory Porsche exhaust tips to be retained for an OEM appearance.

Because the factory tips use a significantly smaller inlet diameter, retaining them requires the SOUL exhaust to neck down at the outlet. This creates additional restriction compared with SOUL's full-size exhaust tips.

For maximum exhaust flow and to preserve the full 3-inch system, SOUL recommends using its upgraded Slash Cut or Weissach tips.

Details

• Complete header-to-tip exhaust upgrade

• Choice of Competition or Street configuration

• Catless Competition Headers included with both packages

• Choice of catless Competition OAPs or high-flow Sport Cat OAPs

• OAP thermal-management solution included as standard

• SOUL Valved Exhaust System included

• Full 3-inch exhaust pathway when equipped with SOUL exhaust tips

• X-pipe rear exhaust design

• Two distinct valves-open and valves-closed sound characteristics

• Integrated anti-drone engineering

• Helmholtz characteristics utilized in the valves-closed flow path

• Longer header primary tubing than the restrictive factory configuration

• Enlarged header merge collectors

• Proven power and torque improvements through exhaust-flow optimization

• Stronger midrange power delivery

• Increased throttle response

• Increased exhaust volume and character

• Compatible with factory exhaust valve operation

• Designed and manufactured by SOUL Performance Products

• Backed by SOUL Performance Products' Lifetime Warranty for street and track use

Check Engine Light / Emissions Notice

Competition Package: Fully catless. A check engine light should be expected unless appropriate ECU calibration is used.

Street Package: Uses catless Competition Headers but relocates monitored high-flow catalytic converters into the Sport Cat Over Axle Pipes. SOUL states that this configuration does not trigger a check engine light on North American-market vehicles. European-market vehicles require ECU tuning.

The presence of catalytic converters or absence of a check engine light does not necessarily indicate compliance with local, state, or federal emissions regulations. Customers are responsible for confirming the legality of the selected configuration for their intended use and jurisdiction.

Product Description

SOUL Performance Products' Valved Exhaust System transforms the sound and exhaust flow of the Porsche 718 Cayman GT4 RS and 718 Spyder RS while retaining two genuinely distinct operating modes for aggressive driving and quieter cruising.

The factory GT4 RS rear muffler utilizes tubing measuring less than 2.25 inches, creating a restriction for the GT3-derived 4.0-liter flat-six. SOUL replaces this section with a purpose-built exhaust featuring a full 3-inch valves-open flow path and a bespoke X-pipe designed to produce a smoother, throatier, higher-pitched motorsports-inspired exhaust note.

With the valves open, exhaust flows through the high-flow X-pipe pathway for maximum sound and minimal restriction. With the valves closed, exhaust is redirected through SOUL's specially developed muffled secondary pathway. Straight-through perforated tubing, an internal X-pipe, muffler packing, and Helmholtz resonators work together to reduce exterior volume and control cabin resonance.

SOUL specifically developed the system to address drone between approximately 1,800 and 3,000 RPM, producing a meaningful difference between the valves-open and valves-closed modes without sacrificing the character of the 4.0-liter engine.

IMPORTANT: This Valved Exhaust System is NOT compatible with the factory Over Axle Pipes. Aftermarket Over Axle Pipes are required for installation.

Fitment

Fits:

• Porsche 718 Cayman GT4 RS – 2022+

• Porsche 718 Spyder RS – 2024+

Does not fit:

• Porsche 718 Cayman GT4 RS Clubsport

Required for installation:

• SOUL Competition Over Axle Pipes

• SOUL Resonated Over Axle Pipes

• SOUL Sport Cat Over Axle Pipes

• Or another compatible aftermarket Over Axle Pipe system

This exhaust will not fit with the factory Over Axle Pipes.

Compatible with factory or upgraded headers when used with compatible aftermarket Over Axle Pipes.

Valved Exhaust Operation

Valves Open

The valves-open configuration is designed for maximum sound, flow, and exhaust character.

• Full 3-inch exhaust pathway

• Bespoke X-pipe design

• Smooth, higher-pitched exhaust note

• Increased exterior volume

• Increased cabin presence

• Reduced restriction compared with the factory rear muffler

• Aggressive GT3-inspired motorsports character

Valves Closed

With the valves closed, exhaust is redirected through SOUL's secondary muffled pathway.

• Substantially reduced exterior volume

• Reduced cabin resonance and drone

• Straight-through perforated internal muffler tubing

• Internal secondary X-pipe

• Helmholtz resonators

• Specifically engineered to smooth drone in the approximately 1,800–3,000 RPM range

• Designed to provide a more comfortable cruising experience

The result is a true mild-to-wild exhaust system with two distinct sound characteristics.

Why Aftermarket Over Axle Pipes Are Required

SOUL incorporated advanced anti-drone components into the Valved Exhaust System that occupy additional space around the rear exhaust assembly.

Because of this packaging, the system physically cannot be installed with the factory Over Axle Pipes.

The Valved Exhaust must therefore be paired with compatible aftermarket Over Axle Pipes, including SOUL Competition, Resonated, or Sport Cat Over Axle Pipes.

Customers looking for a complete OAP and Valved Exhaust solution should consider the SOUL Street Package.

Exhaust Tip Options

Slash Cut Double Wall

SOUL's traditional performance exhaust tip design featuring double-wall construction and an outlet designed to complement the full 3-inch exhaust system.

Available in:

• Signature Satin

• Matte Black

Weissach

A motorsports-inspired stainless-steel exhaust tip design influenced by the factory Weissach-style outlets while maintaining the larger flow area of SOUL's exhaust system.

Available in:

• Signature Satin

• Matte Black

Reuse OEM

The factory Porsche exhaust tips can also be retained for customers who prefer the original appearance.

Because the factory tips have a significantly smaller inlet diameter, using them requires the SOUL exhaust to neck down at the outlet. This introduces additional restriction compared with SOUL's full-size Slash Cut Double Wall or Weissach tips.

For maximum exhaust flow, SOUL recommends its larger aftermarket exhaust tips.

Details

• Valved rear exhaust replacement

• Full 3-inch valves-open exhaust pathway

• Bespoke X-pipe architecture

• Two distinct exhaust modes

• Higher-pitched and smoother valves-open exhaust character

• Significantly reduced sound with valves closed

• Straight-through muffler construction

• Internal secondary X-pipe

• Helmholtz resonators

• Anti-drone engineering targeting approximately 1,800–3,000 RPM

• Requires aftermarket Over Axle Pipes

• Not compatible with factory Over Axle Pipes

• Choice of Slash Cut Double Wall, Weissach, or factory OEM exhaust tips

• Constructed from 0.065-inch-wall T304L stainless steel

• Mandrel-bent tubing

• Back-purged TIG-welded construction

• Water-jet-cut mounting brackets

• Brackets manufactured to ISO 9001:2015 standards

• Approximately ±0.003-inch manufacturing tolerances

• Fabricated in heavy-duty fixtures to minimize heat distortion during welding

• New high-grade installation hardware included

• Designed and built in-house in Willow Grove, Pennsylvania

• Backed by SOUL Performance Products' Lifetime Warranty for street and track use

Valve Control

The Valved Exhaust System provides separate valves-open and valves-closed exhaust paths.

SOUL's optional Valve Controller Kit can be used to provide greater control over valve operation and maintain the desired exhaust mode throughout the engine's rev range.

The Valve Controller Kit is not included with the exhaust system unless purchased separately.

DasMotoring Notes

This is the best SOUL rear exhaust choice for GT4 RS and Spyder RS owners who want more sound and performance potential without going to a fixed-volume race exhaust. If you want the car to have two personalities — louder and more aggressive with the valves open, calmer with the valves closed — this is the setup to choose.

Because this system is not compatible with factory over-axle pipes, make sure your build includes SOUL Competition Over Axle Pipes, SOUL Sport Cat Over Axle Pipes, or another compatible aftermarket over-axle pipe option.

SOUL allows this system to be configured with OEM exhaust tips, but the factory tips have a smaller inlet diameter. Reusing the OEM tips requires the system to neck down near the tips, which creates a restriction. For best performance and flow, DasMotoring recommends selecting SOUL’s matching high-flow tips instead of reusing the factory tips.

Product Description

SOUL Performance Products' Race Exhaust System replaces the restrictive factory rear muffler on the Porsche 718 Cayman GT4 RS and 718 Spyder RS with a lightweight, free-flowing X-pipe exhaust designed to bring out the motorsports character of the GT3-derived 4.0-liter flat-six.

Although the GT4 RS produces substantially more power than the standard GT4, Porsche retained a rear muffler architecture with tubing measuring less than 2.25 inches. SOUL replaces this section with a full 3-inch exhaust path from the inlet flanges through the exhaust tips, reducing restriction while dramatically changing the character of the exhaust note.

A bespoke X-pipe merges the exhaust pulses to create a smoother, sharper, higher-pitched tone reminiscent of Porsche's motorsports applications. Unlike the factory valved muffler, the Race Exhaust uses a single unrestricted flow path for a consistently aggressive sound.

The system is available in Non-Resonated and Resonated configurations, allowing customers to choose between maximum volume and weight reduction or additional control of low-RPM resonance.

Fitment

Fits:

• Porsche 718 Cayman GT4 RS – 2022+

• Porsche 718 Spyder RS – 2024+

Designed as a rear exhaust replacement for the 718 GT4 RS / Spyder RS platform.

Can be installed as a standalone rear exhaust upgrade or combined with upgraded Over Axle Pipes and headers for a more comprehensive exhaust system.

Does not fit 718 GT4 RS Clubsport models.

Non-Resonated Configuration

The Non-Resonated Race Exhaust is designed for owners seeking maximum sound, minimum restriction, and the greatest weight reduction.

• Full 3-inch exhaust flow path

• Bespoke X-pipe design

• No rear muffler

• No resonators

• Maximum exhaust volume

• Sharp, high-pitched motorsports-inspired tone

• Approximately 27.5 lbs

• Approximately 6.5 lbs lighter than the 34 lb factory rear exhaust

• Lightest Race Exhaust configuration

Resonated Configuration

The Resonated Race Exhaust retains the same free-flowing architecture while incorporating non-restrictive resonators and anti-drone tubes.

• Full 3-inch exhaust flow path

• Bespoke X-pipe design

• Non-restrictive resonators

• Anti-drone tubes target undesirable frequencies below approximately 2,500 RPM

• Reduced low-RPM resonance compared with the Non-Resonated configuration

• Smoother and more refined overall exhaust character

• Retains the aggressive high-RPM sound of the Race Exhaust

The Resonated configuration is ideal for owners who want the character and flow of the Race Exhaust while reducing some of the resonance associated with a completely non-resonated system.

Exhaust Tip Options

Slash Cut Double Wall

SOUL's traditional performance exhaust tip featuring double-wall construction and a full-size outlet designed around the 3-inch Race Exhaust.

Available in:

• Signature Satin

• Matte Black

Weissach

A motorsports-inspired stainless-steel exhaust tip influenced by the factory Weissach-style outlets while maintaining the larger flow area of SOUL's 3-inch exhaust system.

Available in:

• Signature Satin

• Matte Black

Details

• Replaces the factory rear muffler

• Full 3-inch exhaust flow path from the inlet flanges through SOUL exhaust tips

• Bespoke X-pipe design

• Higher-pitched, smoother motorsports-inspired exhaust note

• Choice of Non-Resonated or Resonated configuration

• Resonated version incorporates non-restrictive resonators and anti-drone tubes

• Non-Resonated system weighs approximately 27.5 lbs

• Factory rear exhaust weighs approximately 34 lbs

• Approximately 6.5 lbs / 2.9 kg weight savings in Non-Resonated configuration

• Constructed from thick-wall 0.065-inch T304L stainless steel

• Mandrel-bent tubing

• Back-purged TIG-welded construction

• Precision water-jet-cut brackets

• Components manufactured to ISO 9001:2015 standards

• Tolerances of approximately ±0.003 inch

• Fixture-built to minimize warping and maintain dimensional accuracy

• New high-grade installation hardware included

• Designed and built in-house in Willow Grove, Pennsylvania

• Backed by SOUL Performance Products' Lifetime Warranty for street and track use

Race Exhaust vs. Factory Rear Exhaust

Factory Rear Exhaust

• Less than 2.25-inch internal flow path

• Valved factory muffler design

• Approximately 34 lbs

• Quieter overall sound

• Greater exhaust restriction

SOUL Race Exhaust

• Full 3-inch flow path

• Free-flowing X-pipe architecture

• No exhaust valves

• Approximately 27.5 lbs in Non-Resonated configuration

• Approximately 6.5 lbs lighter than factory

• Significantly more aggressive exhaust volume

• Smoother, higher-pitched exhaust character

• Choice of Non-Resonated or Resonated configuration

The SOUL Sport Header Package is a complete header and catted over-axle pipe upgrade for the Porsche 718 Cayman GT4 RS and 718 Spyder RS. This package combines SOUL Competition Headers with SOUL Sport Cat Over Axle Pipes, giving the car a major improvement in sound, response, and exhaust flow while still retaining catalytic converters in the over-axle section.

For the GT4 RS and Spyder RS platform, SOUL chose not to compromise the header design with a catted header replacement. Instead, this package uses unrestricted Competition Headers paired with high-flow catted over-axle pipes. The headers maximize the available space with longer tubing and an expanded merge collector, while the Sport Cat Over Axle Pipes replace the factory over-axle / particulate filter section with a freer-flowing catted design.

The result is one of the best balanced exhaust upgrades for the GT4 RS and Spyder RS: more character, sharper response, better flow, and a more aggressive sound without moving to a fully catless over-axle setup.

Fitment

Fits:

• Porsche 718 Cayman GT4 RS

• Porsche 718 Spyder RS

Does not fit 718 GT4 Clubsport models.

What’s Included

• SOUL Competition Headers

• SOUL Sport Cat Over Axle Pipes

• Heat solution for the Sport Cat Over Axle Pipes

• New high-grade installation hardware

• OEM three-bolt gaskets where applicable

Key Features

• SOUL part number: POR.718GT4RS.SPPKG

• DasMotoring SKU: DM-SOUL-718RS-SPPKG

• Complete header and catted over-axle package for the GT4 RS / Spyder RS

• Combines SOUL Competition Headers with SOUL Sport Cat Over Axle Pipes

• Retains catalytic converters in the over-axle section

• Designed to increase sound, response, and exhaust flow

• Header design uses longer tubing and an expanded merge collector

• Sport Cat Over Axle Pipes use high-flow catalytic converters

• Sport Cat Over Axle Pipes include heat solution as standard

• Works with the factory rear exhaust or an upgraded rear exhaust system

• Built from mandrel-bent .065" wall T304L stainless steel

• Back-purged TIG welded for strength and longevity

• Waterjet-cut flanges manufactured to ISO 9001:2015 standards

• Designed and built in-house by SOUL Performance Products in Willow Grove, Pennsylvania

• Backed by SOUL’s lifetime warranty

DasMotoring Notes

This is the package I would recommend for GT4 RS and Spyder RS owners who want a serious exhaust upgrade while keeping catalytic converters in the system. Compared with only changing the over-axle pipes, this package also opens up the header section, giving the car a more complete change in sound, response, and flow.

For maximum sound and flow, consider the SOUL Competition Headers paired with SOUL Competition Over Axle Pipes instead. For a more street-conscious setup that still delivers a big jump in character, this Sport Header Package is the better choice.

SOUL states that the Sport Cat Over Axle Pipes are not expected to trigger a check engine light on North American cars, while European-market cars require ECU tuning. Emissions requirements vary by location and vehicle use, so please confirm local requirements before ordering.

Product Description

SOUL Performance Products Competition Headers are a fully catless header solution developed to maximize exhaust flow, sound, power, and response from the GT3-derived 4.0-liter flat-six in the Porsche 718 Cayman GT4 RS and 718 Spyder RS.

Rather than compromise runner length and collector design to package catalytic converters within the replacement headers, SOUL utilizes the available space for longer primary tubing and an enlarged merge collector. The outlet transitions into the full 3-inch flow path used by the GT4 RS / Spyder RS over-axle exhaust system.

Removing the factory catalytic converters significantly reduces restriction at the front of the exhaust system and allows considerably more of the engine's natural exhaust character to come through. The Competition Headers can be paired with the factory over-axle pipes or used as the foundation of a more comprehensive SOUL exhaust system.

The complete SOUL header assembly weighs approximately 17.75 lbs compared with approximately 22.2 lbs for the factory headers, reducing weight by approximately 4.5 lbs while providing a freer-flowing exhaust path.

These headers are catless and will trigger a check engine light when installed without appropriate ECU calibration.

Fitment

Fits:

• Porsche 718 Cayman GT4 RS

• Porsche 718 Spyder RS

Does not fit 718 GT4 RS Clubsport models.

Compatible with:

• Factory Over Axle Pipes

• SOUL Resonated Over Axle Pipes

• SOUL Competition Over Axle Pipes

• SOUL Sport Cat Over Axle Pipes

• Factory rear exhaust

• Upgraded rear exhaust systems

Details

• Fully catless competition header design

• Removes the factory catalytic converters

• Longer primary tubing made possible by eliminating the factory catalytic converter assemblies

• Enlarged merge collectors

• Designed to transition into the 3-inch flow path of the over-axle exhaust system

• Increased exhaust sound, flow, power potential, and throttle response

• Direct bolt-on installation

• Compatible with factory or upgraded Over Axle Pipes

• SOUL header weight: approximately 17.75 lbs

• Factory header weight: approximately 22.2 lbs

• Weight savings: approximately 4.5 lbs / 2 kg

• Constructed from thick-wall 0.065-inch T304L stainless steel

• Mandrel-bent tubing

• Back-purged TIG-welded construction

• Cast cylinder-head flanges provide a smooth transition from the exhaust ports into the runners

• Precision water-jet-cut exhaust flanges

• Exhaust flanges manufactured to ISO 9001:2015 standards

• Flange tolerances of approximately ±0.003 inch

• Fixture-built to maintain dimensional accuracy during welding

• Quality checked prior to shipment

• New high-grade installation hardware included

• OEM three-bolt gaskets included

• Designed and built in-house in Willow Grove, Pennsylvania

• Backed by SOUL Performance Products' Lifetime Warranty for street and track use

Catless Header / Check Engine Light Notice

These Competition Headers remove the factory catalytic converters entirely.

Installation will trigger a check engine light due to the removal of the factory catalysts unless the vehicle is appropriately calibrated to accommodate the catless exhaust configuration.

Customers should verify all applicable emissions and vehicle-use regulations before installation. Catless exhaust components may not be legal for emissions-controlled street vehicles in all jurisdictions.

Pairing With SOUL Over Axle Pipes

The Competition Headers can be installed while retaining the factory Over Axle Pipes, allowing the headers to serve as a standalone upgrade.

For a more comprehensive exhaust system, they can also be paired with SOUL's upgraded Over Axle Pipes:

SOUL Sport Cat Over Axle Pipes

• Adds high-flow catalytic converters farther downstream in the exhaust system

• Provides a modular option for owners who want SOUL Competition Headers while retaining catalytic converters within the exhaust system

• Includes a thermal-management solution

SOUL Resonated Over Axle Pipes

• Catless configuration

• Integrated resonators help smooth the overall exhaust tone

• Substantial increase in sound while remaining more refined than the Competition OAP configuration

SOUL Competition Over Axle Pipes

• Fully catless configuration

• Maximum reduction in exhaust restriction

• Lightest and most aggressive SOUL Over Axle Pipe option

• Produces the most aggressive overall configuration when paired with Competition Headers

Product Description

SOUL Performance Products Sport Cat Over Axle Pipes offer a unique solution for Porsche 718 Cayman GT4 RS and 718 Spyder RS owners looking for increased sound and performance while retaining monitored catalytic converters in the exhaust system.

Rather than replacing the factory headers with a catted header design, SOUL relocates the high-flow catalytic converters to the over-axle section. This modular approach allows the Sport Cat Over Axle Pipes to be used with the factory headers or paired with SOUL Competition Headers for a more comprehensive exhaust upgrade.

As a standalone upgrade, the Sport Cat Over Axle Pipes replace the factory particulate-filter assemblies with a freer-flowing design incorporating high-flow catalytic converters. The result is increased exhaust sound and reduced restriction while retaining catalytic converters downstream in the exhaust system.

For a more aggressive configuration, pairing the Sport Cat Over Axle Pipes with SOUL Competition Headers removes the factory catalytic converters at the headers while retaining the monitored high-flow catalytic converters within the over-axle pipes.

Because catalytic converters generate considerable heat, SOUL includes its heat solution as standard equipment with every set of Sport Cat Over Axle Pipes.

Fitment

Fits:

• Porsche 718 Cayman GT4 RS

• Porsche 718 Spyder RS

Compatible with factory or upgraded headers.

Compatible with factory or upgraded rear exhaust systems.

Details

• High-flow catalytic converters integrated into the over-axle pipes

• Replaces the factory particulate-filter assemblies

• Provides increased exhaust sound and improved exhaust flow

• Allows retention of monitored catalytic converters when paired with SOUL Competition Headers

• Compatible with factory headers

• Compatible with SOUL Competition Headers

• Compatible with factory or upgraded rear exhaust systems

• Heat solution included as standard

• SOUL system weight: approximately 18.7 lbs

• Factory over-axle pipe weight: approximately 25 lbs

• Weight savings: approximately 6.3 lbs / 2.86 kg

• Constructed from thick-wall 0.065-inch T304L stainless steel

• Mandrel-bent tubing

• Back-purged TIG-welded construction

• Precision water-jet-cut flanges

• Flanges manufactured to ISO 9001:2015 standards

• Flange tolerances of approximately ±0.003 inch

• Fixture-built to maintain dimensional accuracy during welding

• Quality checked and fixture tested prior to shipment

• New high-grade installation hardware included

• Designed and built in-house in Willow Grove, Pennsylvania

• No check engine light expected on North American-market vehicles

• ECU tuning required for European-market vehicles

• Backed by SOUL Performance Products' Lifetime Warranty for street and track use

Modular Catalytic Converter Design

SOUL developed the Sport Cat Over Axle Pipes as an alternative to using catalytic converters within replacement headers.

With the factory headers retained, the Sport Cat Over Axle Pipes add high-flow catalytic converters while replacing the factory particulate-filter section.

When combined with SOUL Competition Headers, the factory header-mounted catalytic converters are removed and the high-flow catalytic converters within the Sport Cat Over Axle Pipes remain in the exhaust system.

This gives GT4 RS and Spyder RS owners the ability to build the exhaust system in stages while maintaining compatibility between the factory and SOUL components.

Sport Cat vs. Competition Over Axle Pipes

SOUL Sport Cat Over Axle Pipes

• High-flow catalytic converters included

• Approximately 18.7 lbs

• Approximately 6.3 lbs lighter than the factory over-axle pipes

• Heat solution included as standard

• Designed for owners who want increased sound and flow while retaining catalytic converters

• Can be paired with factory or SOUL Competition Headers

SOUL Competition Over Axle Pipes

• Catless over-axle design

• Approximately 11.65 lbs

• Approximately 13.3 lbs lighter than factory

• More aggressive reduction in exhaust restriction

• Greater weight savings

• Optional heat solution

Designed to fit:

• 2020+ Porsche Cayman GT4/ GT4RS 

• 2020+ Porsche Boxster Spyder/ Spyder RS

• 2021+ Porsche Cayman GTS (4.0)

• 2021+ Porsche Boxster GTS (4.0)

Product description:
CARGRAPHIC Valve Control Unit to enhance functions of factory exhaust valve system

Consisting of:

• CARGRAPHIC valve control unit

• Wiring loom to connect with 2 vacuum exhaust valves

• 2x CARGRAPHIC remote controls

Export Version - Motorsport use only - No approval for use under road traffic regulations

Features:

• Factory control remains connected

• Easy connection and installation

• Traceless deinstallation

• Activation of factory valve control unit is always possible

• High quality remote controls with CARGRAPHIC logo

How it works:
The CARGRAPHIC valve control unit is installed between the exhaust valves and the factory control unit. It takes over / overlays the control function of the standard control unit and operates with 3 modes:

• SPORT mode: valves always open

• COMFORT mode: valves always closed

• AUTOMATIC mode: factory control is reactivated

PERFORMANCE - Made in Germany

Attention:
Permanent closing of the exhaust valves, especially under full power, can lead to engine damage.
Example pictures - Actual product may vary depending on model version.

Fitting notes:
Thanks to the original plug-and-play connectors, the valve control unit can be connected quickly. For safe and long-term operation, however, the control module & wiring must be mounted in a dry location, protected from heat and splashing water, and the wiring harness must be routed professionally. This requires sound knowledge of automotive electrics and the proper workshop equipment.

We therefore strongly recommend installation by a qualified specialist workshop. Self-installation may lead to malfunctions or vehicle damage and will void any warranty claims.

National and International Regulations and Requirements:
The CARGRAPHIC portfolio includes components that may be affected by national and international emissions regulations. CARGRAPHIC places great importance on providing accurate information about the compliance of our products with the respective regulations and clearly indicating whether they are approved exclusively for racetrack use or also for public road use. However, if there is no specific declaration regarding a product's intended use, CARGRAPHIC makes no assurance regarding its compliance. It is fundamentally the buyer's responsibility to select the appropriate product for the intended purpose and verify whether its use complies with local regulations and requirements. As regulations may change, we recommend regularly visiting our website to ensure the chosen product meets current legal requirements. Make sure that the product is installed according to the installation instructions and operated in compliance with all applicable local regulations.

Click for install article here

Designed to fit:

• 2020+ Porsche Cayman GT4/ GT4RS 

• 2020+ Porsche Boxster Spyder/ Spyder RS

• 2021+ Porsche Cayman GTS (4.0)

• 2021+ Porsche Boxster GTS (4.0)

Product description:
CARGRAPHIC performance 2-Mode Exhaust Valve Control Unit - Version for vacuum exhaust valves

Consisting of:

• CARGRAPHIC performance exhaust valve control unit

• Wiring set for connection to vacuum valves and Pierburg solenoid, first generation with square connector

• Adapter wiring

• 2x CARGRAPHICremote controls

Export Version - Motorsport use only - No approval for use under road traffic regulations

Features:

• Factory control function remains active

• Connection using OEM plugs

• Easy installation

• Traceless removal

• Full control of your exhaust valves

• High quality remote controls with CARGRAPHIC logo

• Programmable start mode - engine start with open or closed exhaust valves

How it works:
The CARGRAPHIC valve control unit is installed between the exhaust valves and the factory control unit. It takes over / overlays the control function of the standard control unit and operates with 2 modes:

• SPORT mode: valves always open

• AUTOMATIC mode: factory control is reactivated

PERFORMANCE - Made in Germany

Attention:
Example pictures - Actual product may vary depending on model version.

Fitting notes:
Thanks to the original plug-and-play connectors, the valve control unit can be connected quickly. For safe and long-term operation, however, the control module & wiring must be mounted in a dry location, protected from heat and splashing water, and the wiring harness must be routed professionally. This requires sound knowledge of automotive electrics and the proper workshop equipment.

Click for install article here