SPYSHOTS: Porsche 718 Cayman GT4 RS on test


The recently launched Porsche 718 Cayman GT4 arrived with the natural progression of more power, torque and consequently performance from an engine that is slightly larger than its predecessors, now up to 4.0 litres from the previous 3.8 litre naturally aspirated, horizontally-opposed six-cylinder.

More aggressive aerodynamic elements are in place on this ‘RS’ variant. While the front bumper appears to be carried over from the 718 Cayman GT4, the front bonnet on this car sports a pair of NACA ducts, and the rear side window panels have now been replaced by a set of air intake slats.

The big change at the back is the addition of a much larger rear spoiler, which appears to be of the swan-neck configuration as seen on the 992-generation 911 GT3 development car, while the GT4’s rear decklid, bumper, exhaust and diffuser layout appears unchanged. This should also mean that aero work at the front end is still in progress, as that will have to balance the added downforce from the larger wing used here.

The development car seen on test here is likely to use a version of the 9A2 Evo 4.0 litre, naturally aspirated flat-six revised to produce more than the 420 PS at 7,600 rpm and 420 Nm of torque from 5,000 rpm to 6,800 rpm in the ‘standard’ 718 Cayman GT4 and its open-topped sibling, the Boxster Spyder.

It remains to be seen if the more focused GT4 ‘RS’ will retain the six-speed manual of the GT4, or if it will take the 911’s direction of going dual-clutch auto PDK-only for the GT3 RS. The GT4 RS will most likely employ the ceramic composite brakes already featured on the current GT4, while suspension may also be revised to reflect its increased track focus.


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