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SOUL Long Tube Street Headers Porsche 981 GT4 / Spyder (2015-2016)

SKU: POR.GT4.STH
Price
$4,435.00
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

Soul Performance’s Long-Tube Street Headers for the 981 Porsche GT4 / Boxster Spyder significantly improve exhaust flow with a performance-tuned design that boosts throttle response and adds a richer, more aggressive flat-six tone. Featuring free-flowing, long-tube runners matched to large, high-quality catalytic converters, these headers offer real-world gains while being safe for combined street and track use. Built from T304L stainless steel and backed by a lifetime warranty, they’re a premium, bolt-on upgrade that won’t compromise reliability.

Fitment Notes

  • Fits Porsche 981 GT4, 981 Boxster Spyder, and 981 Clubsport (2015–2016)

  • Direct-bolt installation: designed to work with OEM exhaust flanges and mounting points. 

  • Includes “sport”-density catalytic converters; designed to avoid triggering a check-engine light. 

  • Not CARB-certified; not guaranteed legal for emissions-controlled applications. 

  • Intended for street and track use; because of long-tube design, ensure adequate clearance and proper heat shielding.

Included

  • Left and right long-tube header assemblies in T304L stainless steel 

  • High-flow catalytic converters (as part of the header assembly)

  • Mounting hardware

  • Installation instructions / fitment guide

  • Soul Performance lifetime-warranty documentation (headers covered for street + track)

Product Specs

  • Material: T304L stainless steel for high strength and corrosion resistance.

  • Runner size: ~2″ primaries (per Soul’s development notes) to optimize flow on the 3.8 L flat-six. 

  • Third-party dyno results: ~+30 whp when paired with a tune; ~+12 whp gained from the headers alone (after tuning) according to Soul. 

  • Construction: Port-matched flanges, smooth-radius bends, and optimized collectors to maximize flow. 

Product Features

  • Performance-Oriented Design – Long-tube layout and large C-cats improve flow for better response and power.

  • High-Quality Materials – T304L stainless steel ensures durability and resists corrosion over time.

  • Street & Track-Ready – Designed to deliver a meaningful performance bump while retaining reliability.

  • Improved Sound – Enhances exhaust tone with more growl and presence, especially under load, without extreme drone.

  • Proven Reliability – Built in-house at Soul’s US facility and backed by a lifetime warranty, giving confidence in both performance and longevity.

View Product Install Guide