Fabspeed RENNKRAFT Long-Tube Headers for Porsche 718 Cayman GT4 RS

The GT4 RS RENNKRAFT system uses equal-length long tubes and modular catalyst sections to replace the corresponding original header arrangement. Choose the HJS-only package or the package that also includes track bypass sections, and confirm market-specific equipment. Based in Fort Washington, Pennsylvania, Fabspeed Motorsport designs exhaust, intake and ECU-tuning products for Porsche and other sports cars. Development includes evaluation on a dynamometer, on the road and at the racetrack.

Technical Details

• Manufacturer product reference: FS.POR.718GT4RS.HDR.XX. The selected option determines the complete supplied configuration.
• Equal-length T304 stainless primary tubes with merge collectors and investment-cast flanges.
• V-band connections permit catalyst-section changes.
• HJS 200-cell tri-metallic catalyst sections.
• Combined option adds bypass pipes; they are not included with the Sport Cats-only selection.
• Ceramic-core/stainless-shell heat shielding.
• Fabspeed’s no-catalyst-warning-light claim excludes Europe.
• Confirm Spyder RS coverage separately; the explicit fitment bullet names GT4 RS.
• Covered by the Fabspeed Lifetime Warranty, subject to its terms and exclusions.

Use restrictions

Fabspeed specifies closed-course competition and off-road use for this product or its catalyst/intake-changing components. A sport catalyst, a STREET option label or the absence of a fault light does not establish public-road emissions approval. Confirm the requirements for the intended installation before ordering.

Product Videos

Demonstration cars may have additional modifications. The selected configuration determines what is supplied; a video does not establish another vehicle’s fitment or guarantee identical sound or output.

With over 20 years of parts experience, PMB Performance can help check the application. Share your VIN and photos or references for the component being replaced before ordering if the match is uncertain.

Fitment & Compatibility

Use the application details below together with the original component and any existing modifications.