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SOUL Street Headers Porsche 991 GT3 / GT3 RS (2014-2019)

SKU: POR.991GT3.STH
Price
$6,495.00
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

The SOUL Street Headers for the 991 GT3 overhaul the restrictive stock exhaust manifolds with large‑diameter, free‑flowing stainless runners and optimized catalytic converters — unlocking improved throttle response, increased power potential, and a richer, deeper flat‑six exhaust tone. Built to emphasize the motorsport DNA of the GT3’s high‑revving engine while maintaining street drivability, these headers deliver noticeable gains in engine responsiveness and exhaust character without sacrificing reliability. Perfect for enthusiasts who want a meaningful performance and sound upgrade without going full race‑car.

Fitment Notes

  • Compatible with Porsche 991 GT3 / 991.2 GT3 / 911R (covers both 991.1 and 991.2 variants). 

  • Designed to bolt on in place of the OEM header assembly — using factory exhaust ports and mounting geometry. 

  • Intended for use with the rest of the stock exhaust system (or compatible aftermarket exhaust downstream) — keep downstream components in mind when planning a build.

Included

  • Left and right header assemblies, constructed from mandrel‑bent thick-wall stainless steel. 

  • CNC-machined billet stainless head-flanges and an optimized merge collector for improved exhaust flow and durability. 

  • All required installation hardware and gaskets for a direct bolt-on replacement.

Product Specs

  • Material: T304L stainless steel, mandrel‑bent runners, welded with back‑purged TIG for longevity and strength.

  • Wall thickness: Heavy‑gauge (thick‑wall) tubing designed to withstand high heat and repeated track use. 

  • Head flanges: Billet‑machined stainless steel for superior port matching and structural integrity under stress. 

  • Exhaust flow: Large-diameter runners and optimized merge collector improve flow over stock manifolds — reducing back‑pressure, improving evacuation, and enhancing exhaust scavenging. 

  • Sound / Tone: Designed to emphasize the natural, high‑revving character of the 3.8L / 4.0L flat‑six — deeper, richer exhaust note with more presence under throttle and on overrun. 

  • Fitment: Direct bolt‑on replacement — designed to fit precisely without need for custom fabrication. 

  • Warranty: Covered under SOUL’s Lifetime Warranty, for both street and track use.

Product Features

  • Improved Engine Response & Flow — Free-flowing runners and optimized collector improve exhaust evacuation, enhancing throttle response and allowing the engine to rev more freely.

  • Enhanced Exhaust Tone & Character — Brings out a deeper, more aggressive flat‑six soundtrack, adding presence and personality to the GT3’s natural exhaust note.

  • Durable, Race‑Ready Construction — Thick‑wall stainless steel, CNC flanges, and quality welding ensure reliability even under demanding driving or track conditions.

  • Bolt‑On Convenience & OEM‑Compatible Fitment — Designed to replace stock headers directly, no special fabrication or modifications required — making installation more straightforward.

  • Balanced for Street & Track Use — While delivering stronger flow and sound, these headers retain usability for regular driving — a versatile upgrade for enthusiasts who want both performance and practicality.

  • Factory-Backed Warranty for Confidence — Lifetime Warranty backing gives prospective buyers peace of mind whether for daily driving or track use.