Fabspeed Over Axle Link Pipes (718 GT4 RS)


Designed to Fit:

  • 2022+ Porsche Cayman GT4 RS

Product Details

Ditch the restrictive factory over axle pipes to increase power, save weight and add a throatier more aggressive tone. Just like the regular GT4, our Over Axles are a perfect first mod. Our design process started with 3D scanning the entire exhaust system using our CREAFORM 700 Handscan so that we could make a complete Solidworks 3D model of the exhaust. We then designed the exhaust and fixtures using that model so that the exhaust fit perfectly to OEM standards. We use mandrel bent T304 stainless steel tubing that’s 40% larger than factory for maximum flow. The heat shielding has a stainless steel shell, with a ceramic fiber core that can handle a continuous 2400 degrees fahrenheit and is an extremely effective insulator.


These Over Axle Link Pipes will bring out a stronger throatier tone from your GT4 RS. The difference in volume and tone is quite significant.


With an otherwise stock exhaust and no tune, we gained 30 WHP at 4750 RPM and 34 ft/lbs of TQ at 4750 RPM. That's a gain of 33 HP at the crank! Peak horsepower also increased from our baseline of 456 WHP to 474 WHP and from 330 ft/lbs of TQ to 341 ft/lbs of TQ. See our dyno graph above for more details.


  • Fits all Porsche 718 GT4 RS 2022+ Models (Except EU Models) 
  • Choice of a resonatod or non-resonated configuration
  • Impressive dyno proven power gains of 30 WHP and 34 ft/lbs of TQ
  • Save 12 lbs / 5.4 KGs compared to the stock catalytic converter
  • Constructed from mandrel bent T304L stainless steel
  • Much less restrictive than the factory over axle pipes
  • Bi-layer heat shielding consisting of a ceramic fiber core and stainless steel shell
  • Heat shielding can handle up to 2400F / 1300C 
  • Designed from 3D scans of the OEM headers so we can achieve perfect bolt-on fitment
  • We use German-made HJS HD tri-metallic 200-cell EURO 6 homologated catalytic converters for the best performance and reliability
  • NO catalyst generated check engine light (CEL) guaranteed (Except EU Models)
  • No ECU tune required
  • Simple bolt-on installation, no cutting or welding required
  • All Fabspeed performance products are backed by the Fabspeed Lifetime Limited Warranty


          About Fabspeed

          For over 20 years, Fabspeed has been engineering and manufacturing the world's finest stainless steel high performance exhaust systems and components, air intake products, ECU tuning, and more, specifically-tailored for high-end sports cars and exotics. From Porsche to McLaren, our expertise is unmatched and it shows in everything that we do. Their dyno-proven performance products provide an exhilarating driving experience and are backed by a Limited Lifetime Warranty.

          Fabspeed strives to be a force of innovation within the industry; dedicated to maximum performance, excellent service, and true care and concern for the development of products and services for exotic car enthusiasts.