Performance Catted Exhaust Downpipes - Porsche 718 Cayman GT4 RS 2022+

Upgrade the exhaust performance and sound of your Porsche 718 Cayman GT4 RS with these Performance Catted Exhaust Downpipes. Designed specifically for the high-revving naturally aspirated 4.0L flat-six platform, this system is engineered to improve exhaust flow, reduce restriction, and deliver a sharper, more aggressive motorsport-inspired exhaust character.

Constructed from premium T304 stainless steel, the left and right downpipe assemblies feature high-flow catalytic converter sections, precision-formed tubing, reinforced welds, and vehicle-specific flanges for secure integration with the factory exhaust layout. The result is a performance-focused exhaust upgrade suitable for enthusiast street builds and track-oriented applications.

Key Specs

Package Includes

• 1 × Left Performance Catted Downpipe
• 1 × Right Performance Catted Downpipe
• Integrated High-Flow Catalytic Converter Sections
• Sensor / Probe Bungs, as equipped
• Mounting Hardware, Clamps, and Gaskets, where supplied

Features

• GT4 RS Specific Design: Engineered around the exhaust configuration of the Porsche 718 Cayman GT4 RS for vehicle-specific installation.
• High-Flow Catalytic Converters: Performance catalyst sections are designed to reduce exhaust restriction while retaining catalytic converter functionality.
• Premium T304 Stainless Steel: High-quality stainless steel construction provides excellent durability, corrosion resistance, and heat tolerance.
• Improved Exhaust Flow: Larger, smoother exhaust pathways help reduce restriction compared with more restrictive factory components.
• Reduced Backpressure: Performance-oriented tubing and catalyst design support more efficient evacuation of exhaust gases.
• Enhanced Exhaust Character: Produces a more pronounced, aggressive flat-six exhaust tone that better complements the GT4 RS's high-revving character.
• Improved Throttle Character: Freer-flowing exhaust components can contribute to a more responsive and engaging driving feel when properly integrated with the vehicle.
• Mandrel-Formed Tubing: Smooth bends help maintain consistent internal diameter and efficient exhaust gas flow.
• Precision TIG Welding: Reinforced weld construction provides durability under demanding exhaust temperatures and performance driving conditions.
• CNC-Machined Flanges: Precision mounting surfaces help provide accurate alignment and secure connections to compatible factory exhaust components.
• Heat-Resistant Construction: Designed to withstand the elevated temperatures associated with spirited driving and track use.
• Performance-Focused Upgrade: Suitable for enthusiasts seeking improved exhaust flow, stronger sound, and a more motorsport-oriented GT4 RS driving experience.

Vehicle Fitment

• Porsche 718 Cayman GT4 RS - 2022+

Fitment Note: Please verify your exact model year, exhaust configuration, catalytic converter arrangement, oxygen sensor locations, flange pattern, and any existing aftermarket exhaust components before ordering.

Emissions Note: Aftermarket catalytic converters and exhaust modifications may affect emissions compliance, warning lights, diagnostics, or road legality depending on your location. Please confirm all applicable local regulations before installation or road use.

Installation

Professional installation by an experienced Porsche or performance exhaust specialist is strongly recommended. Both downpipes should be inspected and test-fitted before final installation to confirm flange alignment, sensor positioning, exhaust clearances, and compatibility with surrounding components.

After installation, all connections should be checked for exhaust leaks and fasteners should be re-inspected after the first heat cycles. Additional calibration or diagnostic work may be required depending on the vehicle configuration and emissions monitoring system.

Production & Shipping

• Lead Time: 2 weeks
• Delivery: 1 week
• Returns: Allowed within 10 days after delivery
• Replacements: Only for items damaged on arrival

Care Guide

Regular Inspection: Periodically inspect the downpipes, flanges, welds, clamps, and mounting hardware for signs of looseness, leakage, corrosion, or abnormal heat damage.

Keep Components Clean: Once the exhaust is completely cool, exterior stainless steel surfaces may be cleaned using a soft cloth and a suitable non-abrasive metal cleaner. Avoid harsh chemicals that may damage surrounding components.

Check After Heat Cycles: Exhaust hardware can settle after repeated heating and cooling. Recheck mounting points and connections after initial installation and periodically during service.

Avoid Contact While Hot: Exhaust components reach extremely high temperatures during operation. Always allow the system to cool completely before cleaning, inspection, or maintenance.

• T304 Stainless Steel Construction
• High-Flow Performance Catalytic Converters
• Left & Right Downpipe Set
• Mandrel-Formed Tubing
• TIG-Welded Construction
• CNC-Machined Flanges
• Reduced Exhaust Restriction
• Enhanced Exhaust Sound
• Heat & Corrosion Resistant
• Porsche 718 GT4 RS Specific Fitment