Kline Innovation Porsche 991 Turbo Exhaust System (2013–2019)

Description

Upgrade your Porsche 991 Turbo (including 991.1 & 991.2) with the Kline Innovation Exhaust System — engineered for performance, sound, and refinement. This system features Kline’s trademark “perfect X-pipe geometry,” lightweight F1-grade materials, and optimized flow to enhance throttle response, deliver a signature exotic exhaust note, and reduce weight for better dynamics. Whether you’re cruising or pushing hard, this system gives your Turbo the presence and performance it deserves.

Fitment Notes

• Compatible with: Porsche 911 Turbo / Turbo S (991.1 & 991.2) models. 

• Optional materials: 304 stainless steel or Inconel 625 super-alloy (lightweight) versions available. 

• Note: Select the correct specification (e.g., catalysts vs decats, choice of material) to ensure proper fit & performance.

• Installation: Direct-fit exhaust system; however mapping / tuning recommended to unlock full potential when decat versions are used.

• Not necessarily CARB-legal in all jurisdictions when decat versions or non-catalyst options are chosen — check local regulations.

Included

• Full rear / turbo-back exhaust system (depending on selected configuration) manufactured by Kline Innovation.

• Choice of catalyst or de-cat versions (100-cell, 200-cell, or full decat) per selection.

• High-quality hardware / clamps as required for installation.

• Detailed instructions for installation

Product Specs

• Material Options & Weights:

  • Standard Stainless Steel version: ~14 kg for the 991 Turbo system in stainless steel. 

  • Inconel 625 version: ~7.5 kg for the complete turbo-back system — a dramatic weight saving.

• Performance Gains:

  • With decat option: up to +38 hp and +55 Nm (≈41 lb-ft) of torque. 

  • With 100-cell or 200-cell catalyst options: approx +20 hp (100-cell) or +16 hp (200-cell) in tested scenarios. 

• X-pipe diameter: 70 mm; silencer transit diameter: 50 mm; catalyst pipe diameter: 70 mm; cross-section ~122 mm.

• Manifold primaries: 41 mm, secondaries: 50 mm (in Kline’s equal‐length manifold system).

Product Features

• Optimized Flow & Sound: Kline’s perfected X-pipe layout and tuned silencer geometry produce a refined tone at cruise, and a sharp, aggressive roar under throttle. 

• Significant Weight Savings: Especially in the Inconel version (~7.5 kg) which improves handling by reducing mass and lowering rear weight bias. 

• Material & Build Quality: Available in premium 304 stainless or F1-grade Inconel 625 for maximum performance, durability and heat resistance. 

• Performance Upgrade Ready: The system allows for power gains even without ECU tuning (+38 hp / +55 Nm), but when paired with tune further gains available.

• Refined Fitment & Materials: Designed as a direct replacement system for the Turbo platform, retaining driveability, minimizing drone, and enhancing the driving experience.

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