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Kline Innovations Manifolds Porsche 991 Turbo / Turbo S (2013-2019)

Price
$2,625.00

Select Material:

304 Stainless Steel
Currently Backordered - You can still place your order and we'll ship your order as soon as the product is back in stock!

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Installation Services

Don’t worry about the hassle — let our expert team at Forza Motorworks handle the installation for you. Our professional installation ensures everything fits and operates exactly as intended, giving you clean, factory-quality results, proper wiring or mounting, and avoiding the risks of DIY mistakes. You’ll save time, avoid frustration, and get peace of mind knowing the job is done right the first time. Contact us to learn about our installation services and enjoy a seamless upgrade from day one.

FAQ

Shipping Information
For items that are in stock, purchases made after 9am EST will be usually be shipped out in the next 1-2 business days. Please inquire to confirm lead times if you have specific time constraints. Orders will be sent via signature required at our discretion unless otherwise requested.

International Shipping
Any and all customs duties, taxes, import fees, and/or tariffs assessed in connection with the purchase shall be the sole responsibility of the customer/end user.

Return Policy
We have a 30-day return policy, which means you have 30 days after receiving your item to request a return. To be eligible for a return, your item must be in the same condition that you received it, unused and in its original packaging. All returns are subject to a restocking fee based on item and package condition. Buyer is responsible for paying for return shipping costs. If you need a return label, we will email you a return label and deduct cost from refund. Original shipping costs are not refundable. Special order items are not eligible for return.

Cancellation Policy
In order to cancel your order you must email within 24 hours of placing your order or before your order has shipped, whichever occurs first. Special order items are not eligible for cancelation.

Exchange Policy
We have a 30-day exchange policy, which means you have 30 days after receiving your item to request an exchange. To be eligible for an exchange, your item must be brand new in box. Buyer is responsible for paying all shipping costs to exchange product.

Product 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.