Hennessey has made a new 1,000 hp seven-seat SUV

Based upon the already powerful Ram 1500 TRX, Hennessey Performance will create a three-row SUV with more than 1,000 horsepower.

Hennessey Mammoth 1000 SUV

Hennessey Performance has announced a new limited-edition SUV, based upon the 2021 Ram 1500 TRX truck.

Dubbed the ‘Mammoth’ by the Texas-based tuner, bespoke bodywork will turn the pickup into a three-row SUV.

Star of the show will be the 6.2-liter supercharged Hemi V-8, with output pushed far beyond the Ram TRX’s 702 horsepower.

More seats, more horsepower

Hennessey Mammoth 1000 SUV

Hennessey has developed experience dealing with the 6.2-liter ‘Hellcat’ Hemi V-8, found in a range of Mopar products. Previous efforts have included modifying the Dodge Challenger and Jeep Gladiator

It means that the claim of 1,012 horsepower and 969 lb-ft of torque from the Hennessey upgrades seem perfectly feasible. Contributing to the improved output is a new supercharger system, upgraded exhaust, new fuel injectors, and a high-flow air intake. 

This is said to translate into faintly ridiculous levels of performance for a seven-seater SUV. A 0-60 mph sprint should be dismissed in 3.2 seconds, with a quarter-mile run taking 11.4 seconds. 

Whether you wish to submit six passengers to such acceleration is another question, however . . .

The new king of SUVs

Hennessey Mammoth 1000 SUV

Hennessey will fit the Mammoth SUV with an off-road package, including a 2.5-inch suspension lift, and a set of new wheels wearing 35-inch tires. Custom bumpers, and new LED lighting, are also included. 

The folding third-row bench seating is said to accommodate adults, with the promise of luggage space being retained behind them. 

Only 20 examples are set to be made, with prices starting at $375,000 before taxes and shipping.

Discussing the new Mammoth SUV, company founder John Hennessey commented: “Creating this king of SUVs offers our customers the ultimate combination of space, power and exclusivity.”

Hennessey has recently completed testing of its new Venom F5 hypercar, ahead of an official launch next month.

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John Redfern
John Redfern
U.S. Editor with a love of all things Americana. Woodgrain-clad station wagons and ridiculous muscle cars a speciality.

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