Fabspeed Valved Cat-Back for Porsche 981 Cayman GT4 / Boxster Spyder (2015–2016)

Use a valve-controlled rear exhaust on the 981 Cayman GT4 or Boxster Spyder while retaining the original catalyst-equipped headers. The muffled and bypass sound paths are controlled by the matched factory equipment or the required controller. Fabspeed Motorsport designs performance exhaust systems, air intakes and ECU tuning in Fort Washington, Pennsylvania. Porsche and other sports-car applications are developed through dyno testing, road evaluation and racetrack work.

Before you order

Confirm whether the supplied package includes the valve-control equipment your car requires. A tip-finish selection alone does not identify the control hardware.

Technical Details

• Manufacturer product reference: FS.POR.981GT4.VLVXX. The selected option determines the complete supplied configuration.
• 2.5-inch / 63.5 mm inlet tubing and rear X-pipe.
• 14–16-gauge T304L stainless construction with Helical valves.
• Selected outlet style follows the variant.
• Fabspeed reports approximately 7 lb less weight than the original rear muffler.
• Bolt-on rear replacement without cutting or welding.
• Vehicles without suitable factory valve controls require the matching controller kit.
• Covered by the Fabspeed Lifetime Warranty, subject to its terms and exclusions.

Installation Resources

• Porsche Homelink for Valvetronic Exhaust Connection (PDF)

Manufacturer Videos

Fabspeed Motorsport 981 GT4 Valved Exhaust Revving

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.

Need help matching this part? PMB Performance brings over 20 years of parts and fitment experience. Send your VIN and the relevant original or modified component details so we can help verify the application before you order.

Fitment & Compatibility