目前，保时捷718 Cayman只有标准版和S版两种车型，但718家族将很快获得扩展，届时保时捷将增加GTS版本。最近谍照记者近距离拍到了正在进行最终测试的GTS版本，这款高性能轿跑车几乎未进行任何伪装。新车前保险杠采用了更突出进气口，而车尾的散流器进行了改款，在它的两侧是一对排气尾管。此外，尾灯组的两个红色灯条似乎被拿掉了，替代它的是单色灯罩，与车身涂装能更好的契合。除了外观变化，GTS还将配备更大合金轮圈和刹车盘以适应动力的提升。目前S版本功率257千瓦/350马力，预计保时捷将为这台2.5升四缸引擎再“挤出”20马力的功率。同时扭矩输出也将略高于S版的420牛米。除了动力升级，悬挂也将升级，底盘也将重新调校以便提升新车转向时的灵活性。虽然这辆原型车配备了防滚架，但量产版预计不会采用。保时捷将在下月开幕的法兰克福车展发布718 Cayman S及其敞篷版Boxster。

2018 Porsche Cayman GTS Spied Virtually Undisguised

The 718 Cayman range only has the standard and S versions for the moment, but the family is all set to grow soon when Porsche will unveil the GTS. Spotted from a close distance undergoing final testing, the hotter version of the coupe was not shy to exhibit the body changes it’s going through to distance itself from the S.

The front bumper now hosts more prominent air ducts while at the back we notice a reshaped diffuser hosting the pair of exhaust tips. In addition, the taillights appear to be missing the two red strips and instead adopt a monochromatic look that in this particular case blends nicely with the body’s color.

Beyond the visual changes, the GTS will also feature larger alloy wheels backed by beefier brakes to match the more powerful engine. While the S version has 350 horsepower (257 kilowatts) from its turbocharged 2.5-liter engine, expect Porsche to massage the four-cylinder engine and squeeze roughly an extra 20 hp for the GTS. Torque is also bound to increase a little bit over the current 420 Newton-meters (310 pound-feet). Rounding off the tweaks will be some suspension upgrades and some chassis tuning to make the new Cayman more nimble around the corners. While the prototype pictured here appears to have a roll cage, don't expect to see that on the production model.

Considering the Frankfurt Motor Show will open its doors next month, chances are Porsche will decide to unveil the 718 Cayman S and its droptop Boxster counterpart in the weeks to come.