Used 2021 Ford Mustang GT Premium

The 2021 ROUSH Stage 3 Mustang is a high-performance, factory-engineered upgrade of the Mustang GT, designed for drivers who want extreme power, aggressive styling, and premium comfort. At its core is a supercharged 5.0-liter V8 producing 750 horsepower, paired with a ROUSH-calibrated MagneRide® suspension and enhanced cooling systems to ensure consistent performance on the street or track. The exterior features ROUSH’s R9 aerodynamic body kit, functional hood vents, and performance wheels wrapped in high-grip summer tires, giving the car a bold, race-ready presence. The Competition Package enhances the experience further with a ROUSH Active Exhaust system that delivers adjustable sound levels, engine bay styling upgrades, locking lug nuts, and a premium car cover. Inside, the Premium Interior Package blends performance cues with upscale materials. It includes premium-design leather seating in Black or Amaretto, ROUSH-branded floor mats, serialized Stage 3 badging, billet aluminum pedals, illuminated door sills, and sport-focused trim details. The result is a cabin that feels both refined and purposeful. Overall, a 2021 ROUSH Stage 3 with the Competition and Premium Interior packages delivers supercar-level power, track-inspired engineering, and a high-end interior, making it one of the most complete and aggressive Mustangs available from the factory.