Introducing The 2021 HENNESSEY MAMMOTH 1000 Supercharged RAM TRX Pick-Up Truck

Hennessey RAM TRX MAMMOTH 1000 (678)

Hennessey’s latest creation brings all other trucks to their knees.

  • 1,012 bhp Supercharged V8 engine – The most powerful RAM truck by HENNESSEY
  • 0-60 mph in 3.2 seconds – The quickest RAM truck by HENNESSEY
  • Only 200 offered in 2021 – One of the most exclusive RAM trucks by HENNESSEY

SEALY, TX – January 20, 2021 – (Motor Sports NewsWire) – The Hennessey Performance Engineering (HPE) team is blasting into 2021 with an all-new high-performance pickup – the limited-edition HENNESSEY MAMMOTH 1000.

The complete, turnkey, vehicle is built upon the highly acclaimed 2021 RAM 1500 TRX. That performance-tuned pickup leaves the factory with a supercharged 6.2-liter V8, which is rated at 702 bhp and 650 lb-ft of torque, an 8-speed automatic and permanent 4-wheel drive. The team at Hennessey, never satisfied with stock tuning, enhances and upgrades the RAM into the MAMMOTH 1000.

The upgrades to the MAMMOTH 1000 include an upgraded supercharger, pulley upgrades, stainless-steel headers, high-flow exhaust componentry, and new HPE calibration. Power output jumps to 1,012 bhp and 969 lb-ft of torque – that’s 310 bhp and 319 lb-ft of torque more than the showroom stock TRX!

Complementing the powertrain enhancements is the MAMMOTH OFF-ROAD STAGE 1 package, complete with a 2.5-inch lift. This comprehensive package includes a custom front bumper with LED lights, 20-inch Hennessey 10-spoke wheels, 35-inch off-road tires, and a front suspension leveling kit. Other upgrades include a retractable electronic bed cover, and electronic fold-out steps.

The total turnkey cost for the HENNESSEY MAMMOTH 1000, including a 2021 RAM 1500 TRX and a 2-year / 24,000-mile warranty, is $135,350 not including delivery.

“The RAM 1500 TRX is exciting in stock configuration, but I’m seeking extraordinary,” said Founder and CEO, John Hennessey. “The MAMMOTH 1000 upgrades completely transform this impressive pickup into something astonishingly powerful, visually exciting, and indisputably unique.”

HENNESSEY MAMMOTH 1000 truck production will be limited to just 200 units for the 2021 model year. Each vehicle will be fitted with serial numbered plaques. Orders can be placed through authorized FCA/RAM retailers or HENNESSEY directly by calling 979.885.1300 or visiting  Deliveries begin in Q2 2021.



  • 1,012 bhp
  • 969 lb-ft torque


  • 0-60 mph: 3.2 seconds
  • 1/4 mile: 11.4 seconds @ 120 mph


  • Upgraded 2.65L Supercharger System
  • Lower Pulley Upgrade
  • Upper Pulley Upgrade
  • Stainless-Steel Long Tube Headers
  • High-Flow Catalytic Converters
  • Upgraded High-Flow Fuel Injectors
  • High-Flow Mid Pipes
  • High-Flow Fuel Injectors
  • High-Flow Air Induction System
  • Crank Case Ventilation System
  • HPE Calibration Upgrade
  • MAMMOTH Custom Front Bumper
  • LED Lights in Front Bumper
  • MAMMOTH Rear Bumper
  • Retractable Electronic Bed Cover
  • Upgraded Electronic Fold-Out Steps
  • 20-Inch Hennessey 10-Spoke Wheels
  • 35-Inch Off-Road Tires
  • Front Suspension Leveling Kit
  • All Necessary Gaskets & Fluids
  • Professional Installation
  • Chassis Dyno Testing
  • Road Testing (up to 200 miles)
  • Hennessey Exterior Badge
  • MAMMOTH 1000 Exterior Badges
  • Serial Number Plaques
  • Limited edition of 1 of 200
  • 2-Year / 24,000-Mile Warranty

Notes to editors

About Hennessey

Based in Sealy, Texas, the Hennessey business comprises Hennessey Special Vehicles, Hennessey Performance (HPE), Tuner School, and the Lonestar Motorsports Park. The company has re-engineered more than 10,000 vehicles for performance enthusiasts from around the world to deliver unparalleled driving thrills. Alongside modifying a diverse range of sports, and muscle cars since 1991, the company also applies its high-performance expertise to trucks and SUVs – and boasts its own supercar – the Venom GT.

Every Hennessey product is dyno-proven, fully track-tested, street-legal and warrantied. Customers can choose from road-ready performance-enhanced cars by Hennessey ranging from Ford and Corvette to Porsche and Lamborghini in addition to benefitting from a host of high-performance upgrades.

With its own test track, engineering curriculum for aspiring tuners, more than 50 team members and capacity to work on 40-50 vehicles at a time, Hennessey Performance is one of the world’s leading vehicle engineering companies. The new 6.6-litre V8 Venom F5 hypercar is set for customer deliveries in 2021. Boasting 1,817hp and a +300mph top speed, the company is guaranteed to deliver like never before on its mission of ‘making fast cars faster’.

About John Hennessey

As the company founder and CEO, John Hennessey lives and breathes fast, fun cars. John developed a passion for pushing the limits of his cars while competing at world-renowned motorsport events including Pikes Peak, the Silver State Classic and the Bonneville Salt Flats (where he set a class world record).

What started in 1991, modifying imports out of his garage, soon morphed into building 1000-horsepower twin-turbo Dodge Vipers that gained international recognition in car magazines such as Motor Trend, Car and Driver, Top Gear, and Road and Track.

Viewed as an American icon of speed, John has achieved his vision to be the top automotive tuner and builder in the U.S. With a global sales footprint covering the U.S., Europe, Asia, South America and the Middle-East he continues to find ways to engineer greater performance from some of the world’s most iconic cars alongside the creation of the company’s own world-class hypercar.

Social media channels
YouTube: hpedesign |  Instagram: hennesseyperformance  |  Facebook: @hennesseype  |  Twitter: @HennesseyPerf

Source: Hennessey Performance

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