With only 50 examples planned for 2026, the RTR Mustang Spec 5 pairs supercharged power with track-ready hardware and distinctive styling.
RTR’s Wildest Mustang Yet
RTR Vehicles, the tuning outfit led by Formula Drift champion Vaughn Gittin Jr., has been building performance-oriented Fords for over 15 years. Its latest project, the Mustang RTR Spec 5, is being billed as the company’s new halo car. Only 50 units will be built for the 2026 model year, each priced from $159,999.
More Power Than the GTD
At the heart of the Spec 5 is Ford’s familiar 5.0-liter Coyote V8, heavily reworked with a 3.0-liter Whipple Stage 2 supercharger, an HD Race intercooler, and a Borla cat-back exhaust. These upgrades lift output to more than 870 horsepower and 660 lb-ft of torque. That figure not only eclipses the Mustang Dark Horse by nearly 400 hp, but also outguns Ford’s own GTD, which tops out at 815 hp. Buyers can pair the engine with either a six-speed manual or a 10-speed automatic transmission.
Suspension Built for Precision
RTR didn’t stop at straight-line performance. The Spec 5 features the company’s Tactical Performance suspension system, complete with 30-way adjustable front coilovers and rear dampers, height-adjustable springs, and adjustable sway bars at both ends. Despite its lowered stance, RTR claims the setup maintains suspension articulation for track and street use alike.
Widebody and Carbon Fiber Touches
Visually, the car is distinguished by RTR’s first complete body kit, including composite wide fenders, bumper extensions, and rocker panels. Carbon fiber components such as the splitter, rocker splitters, rear quarter splitters, and aerodynamic “wake towers” further enhance the look. Other exterior cues include an illuminated upper grille with LED intakes, a decklid spoiler, and an available extended color palette. RTR even redesigned the fuel door, which now opens upward using billet aluminum arms and an integrated drainage system.
Track-Ready Wheels and Brakes
The Spec 5 rolls on forged 20-inch Aero 5 Evo wheels measuring 10.5 inches wide in front and 11 inches at the rear. Michelin Pilot Sport 4S tires provide grip, while braking is handled by a Brembo system with six-piston front and four-piston rear calipers, plus two-piece front rotors.
A Distinctive Interior
Inside, RTR equips the Mustang with Recaro sport seats trimmed in cool grey leather bolsters, black suede inserts, and ribbed supports. Additional details include a serialized dash plaque signed by Vaughn Gittin Jr., RTR floor mats, an RTR Performance shift knob, and Ford’s factory-fitted electronic drift brake.
Price and Production
At $159,999, the Spec 5 costs nearly $100,000 more than a Mustang Dark Horse, yet it undercuts other high-powered Mustang builds such as the Shelby Super Snake. Each car comes standard with a Mustang GT equipped with the 401A Group and Performance Package. Production is limited to just 50 cars, cementing its status as a collector-grade model.
