The Demon uses an all-new 6.2-liter V8 engine equipped with a 2.7-liter supercharger, which is rated at with 91 octane gasoline and with 100 octane fuel or higher (both outputs are with the red key fob supplied with the car). Torque stands at on 100 octane fuel. The car weighs less than the Hellcat, the total being . The SRT Demon uses a set of road tires by Nitto Tire, called the NT05R. The tires are the 315/40R18 variations at both front and rear. The tires are targeted for the drag strip, but have enough tread pattern to make them legal for the road. This tire, although an NT05R consumer tire, is a variation built specifically to withstand the power output of the Demon. This makes the Challenger SRT Demon the first production car to contain a set of drag radial road tires. The SRT Demon contains a system that is used specifically for drag racing called transbrake. Dodge uses a unique transbrake that puts the transmission in 1st gear and 2nd gear simultaneously, holding the Demon stationary. This is used along with the car's torque converter to build up hydraulic pressure before launch.