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:
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' 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:
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
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