Kline Valvetronic Performance Exhaust for Porsche 718 GT4 RS

Description

The Kline Innovation Valvetronic Catback Exhaust is a high-end performance exhaust system engineered specifically for the Porsche 718 Cayman GT4 RS. Designed to reduce weight, enhance throttle response, and deliver a more aggressive exhaust tone, this system replaces the stock rear silencer with lightweight and precision-tuned components constructed from either F1-grade Inconel 625 or high-quality stainless steel. Featuring Kline’s valvetronic technology, the system offers dual-mode sound control—refined and quiet for everyday driving, or raw and unfiltered under hard acceleration. With optional high-flow catalytic configurations and expertly harmonized cross sections, this exhaust elevates both performance and performance sound without compromising daily drivability.

Fitment Notes

• Designed for Porsche 718 Cayman GT4 RS models (982 generation, 2022–present).

• Direct bolt-on replacement for stock rear exhaust section; uses OEM mounting points.

• Available in valvetronic configuration with fully bypassable design for aggressive sound.

• Optional catalyst choices include 100-cell, 200-cell, or decat pipes.

Included

• Valvetronic cat-back exhaust assembly (rear section) with X-pipe integration.

• Choice of materials: F1-grade Inconel 625 or premium 304 stainless steel (depending on variant).

• Hardware, gaskets, and mounting fittings for direct fit installation.

• Electronically-controlled exhaust valves with actuator system.

Product Specs

• Cross-Section Geometry: X-pipe diameter ~63.5mm for optimized flow and scavenging.

• Silencer Transit Diameter: ~50mm for balanced tone and flow.

• Catalyst Pipe Diameter: ~63.5mm with catalyst options up to 122mm overall cross section.

• Manifold Primaries: ~45mm; secondaries ~63.5mm.

• Material Variants: F1-grade Inconel 625 for maximum lightness and heat resistance or 304 stainless steel for durable performance.

• Weight Savings: Substantial reduction versus stock silencer depending on material choice.

Product Features

• Valvetronic Sound Control: Dual-mode exhaust tone—quiet urban cruising with valves closed and a raw, performance-oriented sound with valves open.

• Optimized Exhaust Flow: X-pipe and harmonic cross sections improve gas escape and throttle response.

• Material Performance Options: Choice of Inconel 625 for extreme lightness and heat durability or stainless steel for balanced daily use.

• Aggressive Tone Characteristics: Removal of restrictive components combined with high-flow catalysts or decat options creates an exotic, high-pitched exhaust note.

• Track-Ready Gains: Up to ~20 hp when paired with high-flow catalyst or decat pipes and proper AFR tuning.

• Carbon Fiber Tips: Available option for premium rear aesthetics (sold separately).

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