Porsche 718 GT4 / GTS Stainless Steel Valved Exhaust System

Porsche 718 GT4 / GTS Stainless Steel Valved Exhaust System

Designed for drivers who expect more from their flat-six, this stainless steel exhaust system transforms the 718 GT4 and GTS into a sharper, more engaging machine—delivering the sound, flow, and presence the platform deserves.

Price

$3,899.99

Fitment

• Porsche 718 Cayman GT4 (2020+)
• Porsche 718 Cayman GTS 4.0 (2020+)
• Porsche 718 Boxster GTS 4.0 (2020+)
• Direct bolt-on installation — no cutting or permanent modifications required
• Engineered to align with OEM mounting points
• Fully compatible with factory exhaust valves and drive modes

Sound Character

The naturally aspirated 4.0L flat-six is one of the best modern engines—this system lets it breathe and be heard.

• Valves Closed: Deep, refined tone with a smooth, controlled presence. Comfortable for daily driving with minimal drone.
• Valves Open: Aggressive, high-revving flat-six scream with increased volume and sharper top-end. Crisp throttle blips, clean overrun crackles, and a more connected driving experience.
• Tone Profile: Fuller, louder, and more defined than stock—reducing factory restrictions while maintaining a clean, exotic sound without excessive rasp.

Materials & Engineering

• Constructed from premium T304 stainless steel for exceptional durability and corrosion resistance
• Precision TIG-welded for strength and a clean, high-end finish
• Mandrel-bent tubing ensures smooth airflow and maximum exhaust efficiency
• Integrated valved system retains full OEM functionality
• Engineered to optimize exhaust flow while maintaining ideal backpressure
• Built to withstand high temperatures from aggressive driving and track use

Performance Benefits

• Improved exhaust flow for increased horsepower and throttle response
• Reduced backpressure for a more free-revving engine
• Enhanced engine note and driver feedback
• Long-term durability with minimal maintenance

What's in the Box

• Full stainless steel exhaust system (mid-pipes + rear section)
• Integrated valved muffler assembly
• All required clamps, hardware, and gaskets
• Plug-and-play valve integration components
• Installation guide

Installation Notes

• Direct bolt-on fitment — no cutting, welding, or permanent modifications required
• Aligns with OEM mounting points for a straightforward installation
• Professional installation recommended to ensure proper torque specs and valve wiring
• Estimated install time: 2–4 hours with basic lift and hand tools

Shipping & Lead Time

• In-stock units ship within 1–3 business days
• Freight shipping via insured carrier — tracking provided upon dispatch
• Contact us for expedited shipping options

Why This System

The 718 GT4 and GTS 4.0 are built around precision and driver connection—but the factory exhaust holds back their true acoustic potential. This system unlocks a deeper, louder, and more emotional sound while improving flow and responsiveness.

For enthusiasts who want their Porsche to deliver not just performance, but a visceral, motorsport-inspired experience every time they drive—this is the upgrade that brings it all together.