Details about the car remain unclear and it isn’t yet known if the Porsche Cayman GT4 will be based around the next-generation Cayman or simply the current car. Either way, Porsche has two powertrain options.
Porsche Cayman GTS and Boxster GTS
The first is an upgraded version of the flat-six engine currently utilised by the Cayman and Boxster and currently producing 340 hp in range-topping Cayman GTS specification. However, there is a possibility that the Porsche Cayman GT4, also likely to be offered in Boxster specification as the RS Spyder, will make use of an inline-4 cylinder turbocharged engine which could utilise a similar hybrid setup to the Porsche 919 Hybrid endurance racer.
It remains unclear just how much power the Porsche Cayman GT4/Porsche Boxster RS Spyder could produce but it could cost around $125,000 in the United States and feature a similar PDK transmission to the incredible one found in the 2014 Porsche 911 GT3.
Alongside the power upgrades, this prototype is sporting an aggressive front splitter as well as a prominent rear wing. Elsewhere, the cabin is likely to be stripped out to reduce weight and make the Porsche Cayman GT4 the perfect mid-engined sub-400 horsepower sports car!