Porsche gave the 718 Cayman GT4 RS the 4.0-liter naturally aspirated flat-six engine from the 911 GT3. It puts 493 horsepower — a 79-hp bump from the Cayman GT4 — and 331 lb-ft of torque. It revs to 9,000 RPM. Like other Porsche RS models, the Cayman GT4 RS only comes with a seven-speed PDK transmission.
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