Porsche is finalising the new range-topping versions of its mid-engined 718 sports car line-up before they are revealed to the public later this year.
The 718 Cayman GTS and its convertible 718 Boxster GTS sibling are due with a more powerful version of the turbocharged 2.5-litre flat-four engine currently used by the S models. The previous-generation GTS models gained 15bhp and 7lb ft over their standard S counterparts, so it’s likely that there will be a notable power hike on this generation’s flagship, too, placing output at about 375bhp.
The models have been spotted undisguised at the Nürburgring and showed the design alterations. A new front bumper and twin central exhausts can be seen, with the latter suggesting an upgraded exhaust system will come as part of the technical upgrades.