Exhaust Sound GT Silver Porsche GT4 RS

Porsche GT4 RS comes with a 4.0-liter flat-six from the 992 911 GT3, with 493 hp and 331 lb-ft of torque, an extra 79 hp and 14 lb-ft compared to the 718 Cayman GT4’s mechanically unrelated 4.0-liter flat-six.

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