Unlock the full performance potential and motorsport-inspired sound of your Porsche 718 Cayman GT4 RS or Spyder RS with the Akrapovič Evolution Header Set (Titanium). Developed specifically for Porsche's high-revving 4.0L naturally aspirated flat-six engine, these premium titanium exhaust manifolds combine advanced exhaust flow engineering, substantial weight savings, and race-proven technology to deliver a more responsive and exhilarating driving experience.
Designed as the ultimate addition to Akrapovič's titanium exhaust system for the GT4 RS and Spyder RS, the Evolution Header Set was developed and tested alongside the Akrapovič Slip-On Race Line (Titanium). When combined with the corresponding titanium link pipes, the complete exhaust system delivers significant improvements in horsepower, torque, exhaust response, and sound.
At the heart of the Evolution Header Set is a unique manifold runner crossover design, incorporated into each side of the exhaust system. This specialized configuration is engineered to optimize exhaust gas movement and improve engine performance throughout the midrange, where additional torque can have a substantial impact on acceleration and throttle response.
Unlike conventional exhaust headers, which may prioritize peak power at the expense of midrange performance, Akrapovič's crossover design is developed to improve the overall power delivery of Porsche's naturally aspirated flat-six engine. The result is a more engaging driving experience, particularly when accelerating out of corners or transitioning through the engine's operating range.
The headers are manufactured from high-grade titanium, offering exceptional strength, corrosion resistance, and thermal durability while dramatically reducing weight compared with the original exhaust manifolds. Akrapovič reports a weight reduction of approximately 5.0 kg (10.9 lbs), representing roughly 51% less weight than the factory header assembly.
Reducing exhaust system weight is especially valuable in the Porsche 718 GT4 RS and Spyder RS, where lightweight construction and vehicle balance are central to the driving experience. The titanium headers eliminate unnecessary mass while maintaining the durability required for demanding high-temperature motorsport applications.
Akrapovič also incorporates precision-cast components manufactured in its own titanium foundry. Among these are the specially developed three-into-one collectors, engineered to provide smooth exhaust gas transitions from the individual cylinder runners into the remainder of the exhaust system.
These collectors are designed to minimize unnecessary flow restrictions and support efficient exhaust scavenging, allowing the naturally aspirated engine to breathe more effectively throughout its operating range.
When installed with the Akrapovič Slip-On Race Line (Titanium) and Link Pipe Set (Titanium), the complete system produces manufacturer-reported gains of 35.4 metric horsepower at 4,900 rpm and 50.9 Nm (37.5 lb-ft) of torque at 4,900 rpm compared with the original factory exhaust system.
These figures were recorded during Akrapovič's dynamometer testing using a Porsche 718 Cayman GT4 RS. They represent the performance improvement of the complete exhaust configuration rather than the titanium headers installed independently.
Beyond measurable performance improvements, the Evolution Header Set dramatically enhances the exhaust character of Porsche's 4.0L flat-six engine. Akrapovič engineers the system to produce a distinctive high-performance racing sound, with pronounced engine harmonics, aggressive acceleration tones, and a sharp acoustic character during gear changes.
The headers are compatible with both OPF-equipped and non-OPF vehicles, allowing the same titanium header design to support different regional GT4 RS and Spyder RS configurations when paired with the appropriate exhaust components.
Because the Evolution Header Set is intended for maximum-performance competition applications, ECU remapping is mandatory following installation. The system is designed for closed-course racing environments and does not meet emissions compliance requirements for public road or highway use.
For Porsche 718 GT4 RS and Spyder RS owners building a dedicated track-focused vehicle, the Akrapovič Evolution Header Set provides an exceptional combination of advanced titanium engineering, substantial weight reduction, increased exhaust performance, and unmistakable motorsport sound.
Fits 2022–2026 Porsche 718 Cayman GT4 RS (982), subject to vehicle-specific verification
Fits 2024–2026 Porsche 718 Spyder RS (982), subject to vehicle-specific verification
Designed for the 4.0L naturally aspirated flat-six engine
Compatible with OPF-equipped vehicles
Compatible with non-OPF vehicles
Designed and tested with the Akrapovič Slip-On Race Line (Titanium)
Intended to be paired with the Akrapovič Link Pipe Set (Titanium)
Compatible Akrapovič Slip-On Race Line: S-PO/TI/24
Compatible Akrapovič Titanium Link Pipe Set: L-PO/T/17
ECU remapping is mandatory
For closed-course competition use only
Does not meet emissions compliance requirements for street or highway use
Performance figures apply to the complete Akrapovič exhaust configuration, not the headers alone
Verify complete exhaust compatibility before ordering
Professional installation and appropriate ECU calibration required
Akrapovič Evolution Header Set (Titanium)
Left-side titanium exhaust header assembly
Right-side titanium exhaust header assembly
Integrated titanium manifold runner crossover components
Precision-cast titanium three-into-one collectors
Manufacturer-supplied installation components as specified in the kit
Required / Complementary Components Sold Separately:
Akrapovič Slip-On Race Line (Titanium) – S-PO/TI/24
Akrapovič Link Pipe Set (Titanium) – L-PO/T/17
ECU remapping and calibration
Manufacturer: Akrapovič
Product Line: Evolution Header Set
Manufacturer Part Number: E-PO/T/8
Product Type: Titanium Performance Exhaust Headers
Vehicle Application: Porsche 718 Cayman GT4 RS / Spyder RS
Chassis: 982
Engine: 4.0L Naturally Aspirated Flat-Six
Exhaust Material: High-Grade Titanium
Header Configuration: Manifold Runner Crossover Design
Collector Configuration: Three-Into-One
Collector Manufacturing: Precision Casting
Manufacturing Technology: Akrapovič In-House Titanium Foundry
Header Assembly Weight: 4.7 kg (10.4 lbs)
Manufacturer-Reported Weight Savings: 5.0 kg (10.9 lbs)
Manufacturer-Reported Weight Reduction: Approximately 51%
Manufacturer-Reported Complete System Power Gain: +26 kW / +35.4 Metric HP at 4,900 rpm
Manufacturer-Reported Complete System Torque Gain: +50.9 Nm / +37.5 lb-ft at 4,900 rpm
Dyno Test Vehicle: Porsche 718 Cayman GT4 RS
Power and Torque Reference: Complete Akrapovič Exhaust System Versus Factory Exhaust
Akrapovič Dyno Peak Power Reading: 522 kW at 8,350 rpm
Akrapovič Dyno Peak Torque Reading: 481.7 Nm at 5,450 rpm
Manufacturer-Reported Complete System Sound Increase: 14.5 dB at 3,750 rpm
Manufacturer-Listed Installation Time: 120 Minutes
Compatible Slip-On Race Line: S-PO/TI/24
Compatible Titanium Link Pipe Set: L-PO/T/17
OPF Compatibility: Yes
Non-OPF Compatibility: Yes
ECU Remapping: Mandatory
Emissions Compliance: Not Street or Highway Compliant
Intended Application: Closed-Course Competition
Manufacturer: Akrapovič, Slovenia
High-grade titanium construction reduces header assembly weight by approximately 10.9 lbs compared with the factory system while providing the strength and thermal durability required for demanding motorsport applications.
Innovative manifold runner crossover design optimizes exhaust gas flow and enhances midrange engine performance, delivering improved throttle response and acceleration characteristics.
Precision-cast three-into-one titanium collectors promote smooth exhaust gas transitions and efficient scavenging, supporting improved exhaust flow throughout the engine's operating range.
Up to 35.4 metric horsepower and 37.5 lb-ft of manufacturer-reported complete-system gains when paired with the Akrapovič Slip-On Race Line and titanium link pipes, based on testing against the factory exhaust.
Aggressive motorsport-inspired exhaust sound produces a distinctive racing character with enhanced engine harmonics, pronounced acceleration tones, and sharp acoustic transitions during gear changes.
Engineered for Porsche GT4 RS and Spyder RS applications with compatibility for OPF and non-OPF configurations, providing a premium titanium header upgrade for dedicated closed-course performance builds.
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