Hennessey®, the Texas-based hypercar manufacturer and high-performance vehicle creator, has started building its biggest ever truck, the 1,012 bhp, 283-inch (719 cm) long Hennessey® Mammoth™ 1000 6×6 TRX.

At almost seven feet high and 88 inches wide, the enormous 6×6 pickup truck dwarfs ordinary cars and trucks. It has the power to match its presence, with Hennessey®'s engineers boosting performance of the stock Dodge Ram TRX engine by more than 300 horsepower to 1,012 bhp. The torque needed to propel the monster truck is enhanced similarly, totaling 969 lb-ft (1,314 Nm) after a 319 lb-ft (433 Nm) uplift by Hennessey®.

Alongside performance upgrades, the new truck features a mountain of off-road kit from locking rear axles and Bilstein suspension, to 20-inch wheels clad in 37-inch off-road tires. The 6×6 Mammoth™ builds on the base Ram TRX adding a third axle, extending the truck's length by more than four feet and creating a cavernous load-space.

John Hennessey®, company founder and CEO: "Everything we do at Hennessey® Performance is turned up to 11, but the Mammoth™ 1000 6×6 is definitely turned up to 12! Everything on the Mammoth™ 6×6 is bigger, badder, and more imposing - plus, it's still super-fast, while being a total powerhouse off-road. It's the undisputed king of the road."

Priced from $449,950 - inclusive of the base Ram TRX - the four-door Mammoth™ 6×6 features uprated front and rear bumpers and a dazzling array of LED lights alongside a bespoke interior, which adds to the exclusivity of this special vehicle. Under the chest-height hood, the truck features a mighty 6.2-liter Hellcat V8 engine - a beast even in stock form. The Hennessey® team builds on this foundation adding a high-flow 2.65L supercharger, fuel injectors and high-flow induction system alongside performance-boosting calibration.

Hennessey® has a track record of success when it comes to gigantic and exclusive 6×6 trucks. The company has built and delivered more than 20 VelociRaptor® 6×6 and Goliath® 6×6 Silverado trucks to clients all around the world. This solid performance in the three-axle world has its foundation in the highest standards of customer satisfaction, with Hennessey® priding itself on the quality of its vehicles and workmanship. Underscoring this dedication to quality and customer car, all Hennessey® models are offered with extensive warranties. The Mammoth™ is no different, benefitting from comprehensive 2-year / 24,000-mile cover.

Hennessey, the Texas-based hypercar manufacturer and high-performance vehicle creator, has partnered with FOX FACTORY to produce a limited run of 2024 RAM 1500 sport trucks. As the last truck to feature a HEMI engine, the 5.7-liter V8 Ram 1500 Laramie is treated to a robust list of exterior modifications to enhance aesthetics and performance. The MAMMOTH 400 receives bespoke paintwork, offering customers with the choice of iconic Viper Red, Viper White, or GTS Blue, each accented by distinctive full-length twin 'Viper Stripes' - a nod to Hennessey's early roots within the Dodge SRT Viper community.

The FOX / Ridetech suspension system lowers the center of gravity and improves handling, while a performance exhaust complete with carbon fiber tips enhances the V8's growl. The sport truck is given a sinister look synonymous with all Hennessey vehicles courtesy of an aggressive body kit including side skirts, a deeper custom front bumper, and a carbon fiber splitter. Customers can further enhance their truck's appearance opting for 22-inch wheels in either satin black or a gloss black milled dark tint.

John Hennessey, company Founder and CEO: "We are excited to partner with FOX to build a special sport truck with a uniquely American livery for the final Hemi V8-powered Ram trucks. Our MAMMOTH 400 Ram celebrates American independence with patriotic colors combined with the 'fireworks' that only the Hemi V8 engine can deliver!"

Mike Dennison, Fox Factory CEO: "In our pursuit to constantly raise the bar on performance in both on road and offroad premium vehicles, we are thrilled to collaborate with our friends and fellow automotive pioneers, Hennessey Performance. It is a partnership that speaks to the hearts of automotive enthusiasts as both companies share a commitment to excellence, next-level performance, and cutting-edge innovation."

The MAMMOTH 400's color options each link to Hennessey's past, while patriotically referencing the colors of the American flag. Harking back to the Dodge Vipers Hennessey built in the late 1990s and early 2000s, the sport truck echoes the colors and visual characteristics most associated with the iconic American performance supercar from that period. The Hennessey MAMMOTH 400 trucks are available in GTS Blue with white stripes, Viper Red with white stripes, and Viper White with blue stripes.

Only 250 units are available globally for 2024 with each model sporting signature Hennessey badging and a serial-numbered engine plaque.