Improve turbo response, exhaust flow, and performance potential with the Kline Innovation Exhaust Manifolds for the Porsche 997 Turbo. Developed as part of Kline's extensive 997 Turbo exhaust program, these performance headers replace the restrictive factory manifolds with a freer-flowing design engineered specifically around the requirements of Porsche's twin-turbocharged flat-six.
Kline utilizes 41mm OD primary tubing, with the cross-section specifically selected to promote faster turbo spool while maintaining strong torque and peak power characteristics. The improved exhaust path helps efficiently move exhaust gases from the cylinder heads to the turbochargers, making these manifolds particularly beneficial on tuned and higher-output 997 Turbo builds.
Two material options are available. The 304 stainless-steel version weighs approximately 6 kg for the pair, providing excellent durability and value for performance street applications. For maximum weight reduction and thermal performance, Kline offers the manifolds in Formula 1-grade Inconel 625, reducing total manifold weight to approximately 2.9 kg.
These manifolds can be integrated with the Kline 997 Turbo exhaust system or used as part of a performance-oriented exhaust build, providing a strong foundation for owners looking to improve turbo response and unlock additional performance from the 997 Turbo platform.
Fits Porsche 997 Turbo
Designed specifically for the twin-turbocharged Porsche flat-six
Available in 304 stainless steel
Available in Inconel 625
Designed to improve exhaust flow and promote faster turbo spool
Compatible with Kline 997 Turbo exhaust components
Can be incorporated into factory or aftermarket exhaust configurations
Kline offers a separate manifold system for the 997.2 Turbo Gen II
Professional installation recommended
Left Kline exhaust manifold
Right Kline exhaust manifold
Required installation hardware
SKU: KL-POR-997TT-MF-SS for 304 Stainless Steel, KL-POR-997TT-MF-SS-2 for Inconel 625
Product Type: Performance Exhaust Manifolds / Headers
Application: Porsche 997 Turbo
Primary Diameter: 41mm OD
Material Options: 304 Stainless Steel / Inconel 625
Stainless Steel Manifold Weight: Approximately 6 kg / 13.2 lb per pair
Inconel 625 Manifold Weight: Approximately 2.9 kg / 6.4 lb per pair
Inconel Weight Savings: Approximately 3.1 kg / 6.8 lb versus Stainless Steel
Inconel Material: Formula 1-Grade Inconel 625
Design Focus: Improved Exhaust Flow and Faster Turbo Spool
Configuration: Vehicle-Specific Twin-Turbo Manifold Set
41mm OD primary tubing is specifically sized to improve exhaust-gas flow while promoting faster turbocharger response
Available in premium 304 stainless steel or Formula 1-grade Inconel 625 to suit different performance, weight, and budget requirements
Inconel 625 construction reduces manifold weight from approximately 13.2 lb to just 6.4 lb per pair
Freer-flowing manifold geometry helps reduce restriction before the turbochargers, supporting improved turbo spool, torque delivery, and peak-power potential
Designed specifically around the Porsche 997 Turbo rather than adapting a universal manifold architecture
Ideal supporting upgrade for tuned vehicles and builds utilizing Kline's high-flow catalyst, catless, and performance rear exhaust components
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