TheHEMI.com

The all-new 2015 Dodge Challenger SRT, with its supercharged 6.2-liter HEMI Hellcat engine, produces an unprecedented 707 horsepower and 650 lb.-ft. of torque, making it the most powerful Challenger ever, Dodge's most powerful V-8 ever and the most powerful muscle car ever.

The Challenger's new 6.2-liter Supercharged Hellcat engine is also the first factory supercharged HEMI, as well as Dodge and SRT's first application of V-8 supercharger technology. For the first time in Chrysler Group history, the all-new 2015 Dodge Challenger SRT with a Hellcat engine comes standard with two key fobs -- red and black. The red key fob is the only key that can unlock the full 707 horsepower and torque potential of the Challenger SRT Hellcat engine; while the black key fob limits the driver to a reduced engine output of 500 horsepower.