Fabspeed Porsche 981 Cayman GT4 Spyder Valvetronic Exhaust System

2016 cayman gt4

Fabspeed’s Valvetronic Exhaust System is the ultimate cat-back performance exhaust for the ultimate street-drivable GT4 dual-use street/track car. With new anti-resonance technology, it offers the world’s best enjoyable driving experience.


We’re delighted to offer a premium exhaust solution for the Porsche Cayman/Spyder GT4. The Valvetronic Exhaust provides two distinct tones depending on the valve position: mild and aggressive wild. We made it a priority to maintain civility around town with the valves closed, and we’ve succeeded. You’ll be able to cruise into your neighborhood after a midnight joyride without having to explain yourself at the next HOA meeting. Open the valves, and you’ll be treated to a glorious roar befitting of the GT4. Burbles and backfires erupt in abundance, and downshifts summon a bark that will make all eyes and ears focus on you. We’re not exaggerating. This system will put an ear-to-ear smile on even the most miserly of faces.


When combined with Fabspeed’s Race Headers, our Valvetronic Exhaust System allows you to push 420HP out of your GT4! Even with Sport Headers, which come in at 408 Horsepower, the power gains are impressive. The Fabspeed exhaust suite completely eliminates the torque dip in the 3500 RPM range and offers power gains all the way through redline. The increase in low-end power will make a significant difference in street drivability with the long gearing of the GT4. Fabspeed systems undergo 3D laser light scanning, CAD designing, and dyno testing, as well as street, racetrack, and Autobahn validation.

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  • Fits all Porsche 981 Cayman GT4 / 981 Boxster Spyder vehicles (2015-2016)
  • Choose between real matte Carbon Fiber tips or Single Wall Tips made in-house for a racecar look
  • CAT-BACK emissions legal. Bolts onto OEM Porsche catalytic converters.
  • Weighs 7lbs less than the factory rear muffler system.
  • CNC Mandrel bent 2.5″ 63.5 precision inlet tubes to a Valvetronic rear system with a 2.5″ 63.5mm ultra high-flow rear X pipe.
  • Independently dyno tested by multiple Porsche engine builders and Race Teams to make more power than any other systems with world-class symphonic sports car sound.
  • Helical Aerospace United Kingdom exhaust valves – the same ultra ‘never fail’ valves used on Porsche GT3, GT3RS. Silica carbide quality.
  • Caveat Emptor – buyer beware – BEFORE considering any other exhaust brand – ASK them WHAT EXHAUST valves do you use? If it’s NOT Helical exhaust valves then RUN because you will be getting 100% guaranteed to fail Cheap Chinese exhaust valves.
  • Chinese exhaust valves always FAIL and break by melting actuators, broken rattling armatures, and leaking exhaust gas. If they say anything else, make excuses, it’s a LIE to take your money. Fabspeed is the ONLY USA Company importing super-premium exhaust valves from Helical limited Great Britain. Helical supplies exhaust valves to Porsche, McLaren, Ferrari, Gordon Murray T50, Pagani, and other hypercar manufacturers that CAN NOT accept failure.
  • Constructed from 14-16ga T304L stainless steel tubing for maximum power and durability
  • Direct bolt-on installation; no cutting or welding required
  • All Fabspeed performance products are backed by the Fabspeed Lifetime Warranty
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For installation instructions for Porsche Homelink Connection For Valvetronic Exhaust Control, click here.

NOTE: For vehicles not equipped with a Porsche Sport Exhaust (PSE) / valves from the factory, a Fabspeed Valve Controller Kit is necessary to control the operation of the valves. Please choose the appropriate kit before ordering.


The Porsche Sport Exhaust – better known as PSE – was a factory option available on many late-model Porsches. You can quickly and easily determine if your vehicle is equipped with PSE by taking a look at your center console. If your console has a button on it with an “exhaust tip” icon (see photo), then your vehicle is equipped with PSE, and you should select the PSE option when adding this product to your cart. If you do not see this button, then your vehicle does not have PSE, and you should select the standard exhaust option when checking out.


  • Q: Can the Valvetronic Exhaust System be installed on other Porsche models?

  • A: No, the Valvetronic Exhaust System is specifically designed for the Porsche Cayman GT4 and Boxster Spyder (2015-2016) models.

  • Q: Will the Valvetronic Exhaust System pass emissions tests?

  • A: Yes, the Valvetronic Exhaust System is emissions legal and will bolt onto the OEM Porsche catalytic converters.

  • Q: Is professional installation required for the Valvetronic Exhaust System?

  • A: While professional installation is recommended, the Valvetronic Exhaust System can be installed by experienced DIYers. It is a direct bolt-on system that does not require cutting or welding.

  • Q: Does the Valvetronic Exhaust System come with a warranty?

  • A: Yes, all Fabspeed performance products, including the Valvetronic Exhaust System, are backed by the Fabspeed Lifetime Warranty.

  • Q: Can I control the operation of the valves in the Valvetronic Exhaust System?

  • A: If your vehicle is not equipped with a Porsche Sport Exhaust (PSE), a Fabspeed Valve Controller Kit is necessary to control the operation of the valves.

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The Fabspeed Porsche 981 Cayman GT4 Spyder Valvetronic Exhaust System is the perfect upgrade for car enthusiasts looking to enhance the performance and sound of their GT4. With its dual-tone capability, power gains, and high-quality construction, this exhaust system offers the best driving experience for both the street and the track. Backed by the Fabspeed Lifetime Warranty, you can trust that this exhaust system will deliver exceptional performance and reliability. Upgrade your GT4 today and experience the true potential of your Porsche.