Texas-based tuning firm Hennessey Performance took a hold of a big and luxurious GMC Yukon Denali Ultimate and outfitted it with a plethora of cool aftermarket mods. These included a three-liter supercharger.
The H650 upgrade kit includes performance air intake and exhaust components, improved sump cooling, Chromoly connecting rods and the mechanical supercharger mentioned above. With everything installed, the output goes up to 659 PS (650 hp / 485 kW) and the peak torque rises to 892 Nm (658 lb-ft).
In order to assure the stability of the tuning, Hennessey took the SUV out on an 800-kilometer (500-mile) off-road ride. It has performed well, so now the H650 package comes with a warranty valid for 3 years or roughly 58,000 km (36,000 miles) of driving.
Elsewhere, the opulent Denali Ultimate rides on new wheels with performance brakes seen behind the spokes and makes use of a valve-based exhaust system. The interior is largely standard.
