Vaughn Gittin Jr.’s performance firm, RTR, has officially unveiled its latest creation: the Mustang RTR Spec 5. Based on the seventh-generation Mustang GT, this limited-edition model delivers a staggering 870 horsepower, positioning itself as a formidable, and more attainable, alternative to Ford’s own $325,000 Mustang GTD. With a starting price of $159,999, the Spec 5 offers a compelling package for enthusiasts seeking extreme performance.
At the heart of the Spec 5 is a heavily modified 5.0-litre V8 engine, now equipped with a Whipple supercharger and intercooler. This powerhouse pairing generates over 870 hp and 894 Nm of torque, promising blistering acceleration. To manage the immense power, RTR has overhauled the chassis and suspension.
The car features a bespoke, fully adjustable suspension system with 30-way adjustable front coilovers and rear dampers, allowing drivers to fine-tune the handling for street or track use. A factory Electronic Drift Brake is also included.
Visually, the Spec 5 is distinguished by a functional widebody kit that provides an aggressive stance while accommodating wider wheels and tyres. Upgraded brakes ensure stopping power matches the engine’s output. RTR emphasises that each vehicle is built to meet or exceed OEM standards, ensuring both reliability and performance. “Spec 5 doesn’t reference our peers – it’s derived from the core DNA of RTR,” said Vaughn Gittin Jr. “This Mustang embodies everything we stand for – confidence, capability, and our ‘Ready to Rock’ mindset.”
Exclusivity is a key component of the Spec 5’s appeal. Production will be limited to just 50 units for the 2026 model year. Buyers can personalise their vehicle with a wide range of options, including nine standard and nine premium paint finishes, along with a paint-to-sample service for ultimate customisation. The interior receives unique RTR upholstery and a numbered plaque, signifying its limited-production status. The Mustang RTR Spec 5 will be available primarily in the United States, with plans for a future launch in Australia, though pricing for that market has not yet been announced.