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Fabspeed Race Headers Porsche 981 Boxster Spyder / GT4 (2016)

SKU: FS.POR.981GT4.LTRHDR
Price
$3,178.95
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

These Fabspeed Race Headers are a high-flow, cat-deleted long-tube solution for the Porsche 981 Cayman GT4 (and Boxster Spyder), designed to relieve exhaust restriction and deliver a significant bump in performance. Built from equal-length T304 stainless-steel tubing, the design maximizes exhaust scavenging and delivers a raw, aggressive tone under throttle. With these headers installed, you get up to +27 whp and +38 ft-lbs of torque down low, along with weight savings that sharpen driving dynamics.

Fitment Notes

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

  • These are cat-deleted (“race”) headers and do not include catalytic converters — intended for track or off-road use.

  • May trigger a check-engine light (“CEL”) on some vehicles when used without further modifications. Fabspeed notes that, on their test car, CEL did not occur over 200 miles with these headers, but your results may vary.

  • Requires proper torque sequencing after heat-cycling: Fabspeed recommends re-tightening all header hardware to OEM torque after initial heat cycles.

Included

  • Left and right long-tube stainless steel header assemblies, CNC-mandrel bent, equal-length.

  • Multi-layer exhaust manifold gasket(s) for reliable sealing.

  • Installation instructions from Fabspeed.

  • Fabspeed Lifetime Limited Warranty documentation.

Product Specs

  • Material: T304 stainless steel, CNC mandrel-bent for smooth flow and strength. 

  • Power Gains: +27 whp, +38 ft-lbs torque at ~3,700 rpm

  • Top-end Gains: +18 whp, +15 ft-lbs torque at ~6,300 rpm

  • Weight Savings: ≈ -10 lbs compared to OEM header section.

  • Construction: Equal-length header tubes to optimize scavenging and pulse tuning. 

Product Features

  • Track-Focused Maximum Flow — removing the cats frees up major exhaust flow, allowing your flat-six to breathe more efficiently.

  • High-Quality Stainless Steel — built from T304 for durability, resistance to corrosion and good heat tolerance.

  • Equal-Length Design — ensures exhaust scavenging is balanced across cylinders for optimized torque and throttle response.

  • Weight Reduction — sheds roughly 10 lbs, improving responsiveness and reducing rear-end mass.

  • Aggressive Sound Profile — the large bore and lack of cats give the GT4 a more muscular, race-like exhaust note.

  • Warranty-Backed — covered by Fabspeed’s lifetime limited warranty, offering confidence in long-term use for track builds.