Fabspeed Long-Tube Competition Headers for Porsche 991 GT3 / RS / 911 R

Replace the first-phase 991 GT3 exhaust manifolds with long-tube competition headers and integrated side-muffler bypass routing. Burns Stainless collectors and Helical-valved sections form a coordinated header system. Fabspeed Motorsport, based in Fort Washington, Pennsylvania, develops exhaust systems, air intakes and ECU tuning for sports cars including Porsche. Its development work uses dynamometer testing, road evaluation and racetrack testing.

Technical Details

• Manufacturer product reference: FS.POR.991GT3.LTRHS.
• T304 stainless mandrel-bent tubing with TIG-welded, back-purged joints.
• Burns Stainless slip-on merge collectors.
• Integrated side-muffler bypass pipes with Helical valves.
• Manufacturer reports about 40 lb less weight; larger power comparisons include ECU tuning.
• Closed-course competition system, not a road-use catalyst replacement.
• Retorque all exhaust fasteners to OEM specification after the first heat cycle.
• Covered by the Fabspeed Lifetime Warranty, subject to its terms and exclusions.

Manufacturer Videos

Explanation Video: Porsche 991 GT3 / GT3 RS Long Tube Competition Race Header System

FABSPEED MOTORSPORT | Porsche 991 GT3 / GT3 RS Long Tube Competition Race Header System Dyno

Demonstration vehicles may have additional modifications. The selected product configuration determines what is supplied; a video does not establish fitment or guarantee a particular sound or output.

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Fitment & Compatibility