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Fabspeed Sport Headers Porsche 997.1 GT3 / GT3 RS (2006-2009)

SKU: FS.POR.997GT3.SHDR
Price
$4,836.95
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

Fabspeed Motorsport 997 GT3 / GT3 RS Sport Headers are designed to unlock the true performance potential of Porsche’s legendary Mezger-powered GT3 platform. By replacing the restrictive factory header system with precision-engineered equal-length stainless steel headers, these dramatically improve exhaust scavenging, increase exhaust flow, and allow the 3.6L and 3.8L flat-six engines to breathe more efficiently throughout the RPM range.

The factory GT3 already delivers an incredible driving experience, but the OEM exhaust manifolds remain a significant restriction—especially on track-driven or tuned vehicles. Fabspeed’s equal-length primary design improves cylinder evacuation and exhaust pulse tuning, resulting in stronger midrange power, increased top-end performance, and a sharper, more motorsport-inspired exhaust note.

Constructed from mandrel-bent T304L stainless steel with integrated high-flow catalytic converters, these headers are engineered for enthusiasts looking to maximize performance without sacrificing drivability. Whether paired with a factory rear exhaust or a full motorsport exhaust setup, this upgrade delivers noticeable gains in both power and driver engagement.

Fitment Notes

  • Fits Porsche 997.1 GT3 and GT3 RS (2006-2009)
  • Compatible with 3.6L and 3.8L Mezger naturally aspirated flat-six engines
  • Direct bolt-on replacement for factory exhaust manifolds
  • Designed for use with OEM or aftermarket cat-back exhaust systems
  • Check local emissions regulations before installation

Included

  • Left-side sport header assembly
  • Right-side sport header assembly
  • Integrated high-flow catalytic converters
  • O2 sensor bungs
  • Installation hardware and mounting components

Product Specs

  • Material: T304L stainless steel construction
  • Design: Equal-length header configuration
  • Primary Tubing Diameter: 1.75 inches
  • Catalytic Converters: High-flow HJS HD metal-core sport cats
  • Construction: CNC mandrel-bent tubing
  • O2 Sensor Compatibility: Retains factory sensor locations
  • Application: Naturally aspirated Mezger GT3 engine platform

Product Features

  • Equal-length header design improves exhaust scavenging and cylinder evacuation
  • Increases horsepower and torque throughout the powerband
  • Enhances throttle response and high-RPM engine performance
  • Produces a sharper, race-inspired Mezger flat-six exhaust note
  • Premium HJS sport catalytic converters balance performance and drivability
  • Direct bolt-on installation with OEM-quality fitment and durability