Hennessey Modifies The 2021 GMC Sierra AT4 And Increases Its Power

The famous modification company Hennessy Performance has revealed a new package of mechanical modifications for the 2021 GMC Sierra AT4 pick-up vehicle.

We have seen before Hennessy’s MAXIMUS 1000 package for the new Jeep Gladiator, but today we will see the result of modifying another American pick-up

Before talking about the new modification project for GMC Sierra pickup, which raised its power and improved its responses, we would like to remind you of our Arab GT team’s test-drive of all GMC Sierra trim levels; Sierra Denali, Sierra Eleven, and GMC Sierra AT4 that we will be talking about in this article, and this edition as you know is specially made for exploring the toughest terrains.

Watch the Video:

This truck is equipped with “HPE Goliath 700” package of modifications, which includes a supercharger to raise the power of the beating heart of this vehicle to around 700 horsepower. The package of modifications also includes an intercooler, some tweaks on the towing system, an aggressive camshaft, and a reprogrammed electronic control unit.

As a reminder, this American luxury truck is originally powered by a 6.2-liter V8 that produces 420 horsepower and 624 Newton meters of torque, connected to a 10-speed automatic transmission.

External modifications to this vehicle will include a new front bumper with LED lights, and new 20-inch rims surrounded by 35-inch Toyo A/T rubber tires. We can also see Hennessy logos and a new hood that contains air vents.

The price of a new GMC Sierra AT4 in global markets starts from 57,790 US dollars, equivalent to 216,712 Saudi riyals, and the cost of this Hennessy’s package is 41,945 US dollars, equivalent to 157,293 Saudi riyals, which raises the price of this modified pick-up to more than 100 thousand dollars.

As usual, the package comes with a complete 3 year / 36,000-mile warranty and is available directly from Hennessey or authorized dealers.




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