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NFINITI turns its flagship luxury SUV into an unexpectedly raw performance machine with the QX80 R-Spec build1, making its public debut at the 2025 SEMA Show. It has unprecedented performance from a version of the legendary Nissan GT-R's twin-turbo engine tuned to be capable of 1,000 horsepower. QX80 R-Spec unleashes INFINITI's luxury flagship and makes an adrenaline-pumping statement about how QX80 can excite and empower clients. Following the introduction of the 650-plus-horsepower QX80 Track Spec concept...