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SOUL Competition Headers Porsche 981 GT4 / Spyder (2015-2016)

SKU: POR.GT4.COH
Price
$3,475.00
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 Competition Headers for the 981 GT4 / Boxster Spyder unlock the true potential of the 3.8 L flat‑six by replacing the restrictive stock exhaust manifolds with a high‑flow, free‑breathing stainless header system. With smooth‑radius tubing, port‑matched flanges and optimized collector design, these headers boost exhaust flow, reduce back‑pressure, and give the engine a more aggressive, race‑inspired exhaust note. On the street or track, you’ll get sharper throttle response, stronger mid‑range punch, and a more visceral exhaust tone — a major upgrade for enthusiasts seeking real performance and sound.

Fitment Notes

  • Compatible with Porsche 981 Cayman GT4 and 981 Boxster Spyder models from 2015 to 2016.

  • Designed as a direct bolt‑on header set — uses factory exhaust ports and mounting points; no custom fabrication or welding needed for installation.

  • Because this is a “competition” (cat‑less) header setup, factory catalytic converters are removed — owners should be aware that this may affect emissions compliance and potentially trigger check‑engine codes without proper ECU tuning or O₂‑sensor management.

Included

  • Left and right stainless‑steel header assemblies (primary tubes + collector section), built for the 981 GT4 / Spyder exhaust geometry.

  • Port‑matched flanges and all necessary hardware for bolt‑on installation (gaskets, bolts, etc.).

  • Installation instructions and quality‑checked packaging to ensure fitment upon delivery.

Product Specs

  • Material: Mandrel‑bent T304L stainless steel tubing with smooth‑radius bends and precision‑machined collector / flange interfaces.

  • Exhaust Runners: Sized for optimal flow on the 3.8 L flat‑six — engineered to maximize scavenging and flow efficiency.

  • Expected Performance Improvement: Independent dyno testing claimed gains of approximately +20 wheel‑horsepower (whp) with competition headers alone; additional gains possible when paired with ECU tuning and further exhaust upgrades.

  • Heat & Weight: Design reduces exhaust restriction — providing better thermal efficiency and a more responsive throttle/exhaust system compared to stock manifolds.

Product Features

  • Enhanced Flow & Throttle Response — Free‑flowing runner design significantly reduces restrictions, allowing faster exhaust evacuation, more immediate throttle response, and improved mid‑range driveability.

  • Raw & Aggressive Exhaust Tone — With minimal restriction and a straight‑through flow path, the exhaust note becomes deeper, sharper and more race‑inspired — especially under load or high RPM.

  • Optimized for Track & Performance Builds — These headers are built for enthusiasts who demand maximum performance and don’t mind sacrificing catalytic emissions compliance for power and sound.

  • Bolt‑On Convenience — Designed for direct swap with stock manifolds using existing mounts and ports — no fabrication required, suitable for DIY or shop install.

  • Premium Construction — Made from high-grade stainless with port‑matched flanges and smooth bends to maximize flow, minimize turbulence, and ensure durability under high heat and stress.

  • Strong Foundation for Further Upgrades — Works well as a base for additional exhaust modifications, ECU tuning, or full track‑oriented builds; improved flow makes downstream exhaust components more effective.