Kline Innovations Exhaust Manifolds for Porsche 991 Turbo and Turbo S (2013–2019)

Description

Transform your Porsche 991 Turbo by installing Kline Innovation’s premium turbo manifolds—engineered for maximum flow, quicker spool-up, and noticeable performance gains. These manifolds replace the stock units with mandrel-bent 41 mm primaries, crafted from either stainless steel or elite Inconel 625 for serious weight savings. With improved exhaust exit velocity and reduced backpressure, your turbo system works more efficiently—delivering sharper throttle response, stronger bottom end, and an exotic tone shift that transforms how your flat-six feels and sounds.

Fitment Notes

• Compatible with: 2013-2016 Porsche 911 Turbo / Turbo S (991.1) and 2017-2019 Porsche 911 Turbo / Turbo S (991.2)

• Also covers select 997.2 Turbo models as part of Kline’s 997/991 manifold range.

• Choose correct material option (304 stainless vs Inconel) depending on your budget and weight-savings goals.

• For full benefit, installation is best paired with supporting modifications (e.g., downpipes, intercoolers, tuning) though the manifolds offer performance gains on their own.

Included

• Pair of Kline Innovation turbo manifolds (one for each bank)

• Installation hardware/gaskets as required

• Documentation/fitment instructions from Kline Innovation

Product Specs

• Primary tube diameter: 41 mm — chosen specifically to improve turbo spool-up. 

• Weight savings (approximate by material):

  • Stainless steel version: ~6 kg total for the manifold set.

  • Inconel version: ~2.9 kg total for the manifold set. 

• Performance gains (for the exhaust system variant, reference for manifold upgrade impact): Kline cites decat variants up to +35–45 whp and +55–65 Nm of torque.

• Material options: Standard 304 grade stainless or aerospace-grade Inconel 625.

Product Features

• Optimized Flow Design: With 41 mm primaries, these manifolds reduce restriction and enable the turbos to spool faster and produce boost more efficiently.

• Weight Reduction: Especially in the Inconel version, you shave several kilograms off the manifold assembly—reducing rotational mass and improving throttle response.

• High-Grade Materials: Choice of durable 304 stainless steel for high quality and affordability, or Inconel 625 for maximum heat resistance, longevity, and minimal weight.

• Exotic Sound Character: While these are manifolds (i.e., upstream of the hydraulics), the improved flow and reduced restriction enhance exit tone and can contribute to a richer, more aggressive exhaust signature.

• Direct Fitment: Designed to replace stock manifolds in the specified models, with accurate fitment and performance focus—giving you the upgrade without major fabrication.

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