Porsche’s track-only Cayman GT4 Clubsport has finally been given the 718 designation of its road-going siblings, but that’s not all. The new digits bring with them roughly 40 extra horsepower for a total of 420. That power comes from a revised version of the old car’s naturally aspirated 3.8-liter flat-six engine, rather than an iteration of the road car’s turbocharged flat-four.
The bodywork gets a unique change, too. The doors and the rear wing are now made from a natural fiber composite that contains plant fibers from flax and, yes, hemp. Porsche notes that it’s a renewable, environmentally-friendly material that also has similar benefits and qualities to traditional carbon fiber. The design of the body also allows for greater downforce, though Porsche didn’t specify how much of an improvement there is.