One of the maddest incarnations of the 2021 Ram 1500 TRX, what Hennessey Performance Engineering calls Mammoth 1000, is no street princess. The Sealy-based tuner has published a video of their super-truck going off the beaten path, demonstrating its go-anywhere capability.
There is, however, a catch. If you purchase a Mammoth 1000 with the intention of bashing dunes into submission, prepare to pony up a few more greenbacks for the off-road goodies. Hennessey Performance Engineering offers two packages in this regard. The Stage 1 package flaunts 20-inch wheels, 35-inch tires, rugged front and rear bumpers, LEDs in the front bumper, a front leveling kit, and three years of limited warranty coverage.
Level up to Stage 2, and you’re presented with 37-inch hooves and electronic fold-out steps. Limited to 200 examples, of which more than 100 units have been spoken for, the Mammoth 1000 is rocking 1,012 horsepower and 969 pound-feet (1,134 Nm) of torque from a seriously upgraded Hellcat mill.
Priced from $150,000 sans option but including the stock vehicle, the colossus in the featured video hides a 2.65-liter supercharger under its hood. The high-flow blower is complemented by a heavy-duty belt and front-/rear-drive pulley upgrades. The spark plugs, thermostat, fuel injectors, and filtration system are upgraded as well, and obviously enough, the engine and transmission control modules are treated to proprietary calibrations.
The 6.2-liter HEMI engine further boasts a crank damper pin assembly upgrade. Every Mammoth 1000 is tested on Hennessey’s track up to 400 miles (650 kilometers) before delivery, and every build is that more special thanks to serialized plaques for the dashboard and engine compartment.
Customers who believe the Mammoth 1000 isn’t right for a weekend getaway with the family can get a seven-seat SUV conversion for the princely sum of $375,000 before taxes and shipping. Higher still, the Mammoth 6x6 is a six-wheeled monster that ditches the factory engine for a tuned Hellephant.
After a 1:43 scale model of a Ferrari 250 GTO sparked Mircea's interest for cars when he was a kid, an early internship at Top Gear sealed his career path. He's most interested in muscle cars and American trucks, but he takes a passing interest in quirky kei cars as well. Full profile
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