In a surprising move, GMC has chosen not to engage in the competitive landscape dominated by the Raptor R and TRX. This absence has opened the door for aftermarket modifications.
Texas-based tuner Hennessey has stepped up to fill this gap by transforming the GMC Sierra AT4. The modified vehicle boasts an impressive 700 horsepower thanks to a supercharged engine.
This enhancement positions the Sierra AT4 as a formidable contender in the high-performance truck market, appealing to enthusiasts seeking alternatives to the established rivals.