Porsche 911 Carrera / S / GTS (991.1) – Valved Exhaust System

Rich F1 Sound • Lightweight Construction • OEM-Style Valve Control

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Overview

Welcome to the Valvetronic Designs Catback Exhaust System for the Porsche 991 platform. Engineered from the ground up, this system is built to deliver a truly rich F1-inspired sound while maintaining comfort and refinement when cruising with the valves closed. Featuring a large center X-pipe, the system creates a smooth exhaust flow, balancing aggression with sophistication for the perfect 991 soundtrack.

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Sound Dynamics

• Valves Open – Exhaust gases flow with minimal restriction, unleashing a sharp, high-pitched F1-style sound that transforms your Porsche into a motorsport machine.

• Valves Closed – Sound is tamed significantly, reducing unwanted cabin frequencies and creating a calm, refined experience for daily driving.

• The system strikes the perfect balance between raw emotion and everyday usability, offering maximum enjoyment without compromise.

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Features

• Available in Anodized Gold T304 Stainless Steel or Blue Burnt Titanium

• Vacuum-actuated exhaust valves with controller for OEM-like operation

• Standalone valve control option for vehicles without factory valves

• 21.8 lbs lighter than the factory exhaust (T304 Stainless version)

• Fully mandrel-bent piping for maximum exhaust flow

• Precision TIG welds for strength and durability

• 100% reversible – always able to return to stock configuration

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Fitment

• 2012 – 2016 Porsche Carrera / Carrera S / Carrera GTS

• 2014 – 2016 Porsche Targa 4 / Targa 4S / Targa 4 GTS

• Also fits convertible models

**Free Flow Front Pipes are designed for use on vehicles that will not be driven on public roadways or highways. Designed for off-road / track use only.