Unleashing the Beast: A Review of the Hennessey Mammoth 1000 TRX - The World's Mightiest Truck

Hennessey Mammoth 1000 TRX

by Michael Satterfield - 06/01/2023

The Hennessey Mammoth 1000 TRX is not just a truck, it's a statement that'll turn heads no matter where you take it. This beast packs a 1,000 horsepower engine that belongs more in an Army Tank than a street-legal vehicle, but when you see that Hennessey name on the quarter panel, you know it's gonna be a wild ride. Nestled between the fenders lies a 6.2-liter V8 from a Challenger Hellcat. Straight from the factory, it churns out 702 horses and 650 pound-feet of torque, launching a stock TRX from 0 to 60mph in a blistering 4.5 seconds. But Hennessey wasn't satisfied with that, oh no. John had to take it to the next level. So, the Mammoth boasts a mind-bending 1,012 horsepower and 950 pound-feet of torque, reportedly capable of blasting from 0 to 60mph in under 3.5 seconds.

Keeping all that untamed power planted firmly on the ground is the task of the Bilstein Blackhawk suspension, offering a whopping 14 inches of travel, complemented by Ram's versatile terrain modes that allow this beast to conquer just about any landscape. Personally, my favorite mode is “Baja.” Essentially, the Mammoth 1000 is a trophy truck masquerading as a street vehicle, complete with the luxuries of heated/cooled seats and a killer sound system. What more could one possibly desire?

Hennessey Mammoth 1000 TRX

To extract such raw power, the brilliant minds at Hennessey equip the Mammoth with a larger 2.4-liter supercharger, a beefier fuel system, enhanced spark plugs, and an ECU tune that brings it all together. On the exterior, they bolted on custom Mammoth bumpers, 20-inch wheels wrapped in 35" or 37" off-road tires, and an abundance of LED lighting, along with some badges and graphics that scream "Get out of my way!" Prepare to loosen your purse strings, as this monster will set you back an additional $50,000 on top of the standard Ram TRX price. In today's market, depending on the initial truck you choose, you could be looking at a Mammoth that'll dent your bank account by nearly $200,000. But hey, exclusivity comes at a price, right? Only 200 Mammoth 1000s will be forged into existence, and they even come with a 3-year/36,000-mile warranty to soothe your worries.

The factory TRX is already a savage, standing as the mightiest production pickup truck ever conceived. I embarked on a cross-Texas road trip with the TRX, eventually reaching my buddy's ranch, where I had the pleasure of truly putting Baja Mode to the test amidst the desert terrain of West Texas. But, as mind-blowingly fast as the stock TRX is, the Mammoth resides on an entirely different plane of existence. One tap of the throttle and you're pinned to your seat, enjoying increased ground clearance thanks to the leveling kit and the beastly grip of those monstrous tires. What's more, the Mammoth maintains a build quality that rivals the factory standards, truly amplifying the already insane TRX experience to unprecedented levels.

Hennessey Mammoth 1000 TRX

I took the Mammoth off-road at the Texas Motor Press Association, where it rightfully earned the esteemed title of Off-Road Truck of Texas, as voted by my fellow journalists. This truck could only emerge from the wild imagination of a man like John Hennessey and be crafted in a place like Texas. With each twist of the throttle, the Mammoth roars with a fury that resonates deep within your bones. It commands attention, demanding respect from fellow motorists and leaving a trail of awe in its wake. It's not just a vehicle; it's a force of nature, a manifestation of raw power.

The Hennessey Mammoth 1000 TRX isn't for the faint of heart. It's for those who crave the extraordinary, who yearn for the thrill of pushing beyond the boundaries of convention. In the world of trucks, the Hennessey Mammoth 1000 TRX stands alone, a true icon of power, performance, and unapologetic extravagance. It is the epitome of automotive madness, a symphony of horsepower and audacity that leaves an indelible mark on anyone fortunate enough to experience it. So, if you dare to defy the ordinary and embrace the extraordinary, buckle up and prepare for a wild ride unlike any other—the Hennessey Mammoth 1000 TRX awaits, ready to unleash its fury upon the world.

For customers around the world, orders can be placed through authorized Ram retailers or Hennessey directly by calling (979) 885-1300 or visiting HennesseyPerformance.com

Hennessey Mammoth 1000 TRX

 Hennessey Mammoth 1000 and Stock TRX

Hennessey Mammoth 1000 Specifications:

  • 1000 bhp @ 6,500 rpm
  • 969 lb-ft torque @ 4,200 rpm
  • Upgraded High-Flow Supercharger System
  • Supercharger Front Drive Pulley Upgrade
  • Supercharger Rear Drive Pulley Upgrade
  • Crank Damper Pin Assembly Upgrade
  • Upgraded Thermostat
  • Heavy Duty Supercharger Belt
  • Upgraded Spark Plugs
  • High-Flow Fuel Injectors
  • High-Flow Filtration System
  • Crank Case Ventilation System
  • HPE ECM Calibration Upgrade
  • HPE TCM Calibration Upgrade
  • All Necessary Gaskets & Fluids
  • Chassis Dyno Testing
  • Road Testing (Up To 500 Miles)
  • Hennessey® Embroidered Headrests
  • Hennessey® Exterior Badging
  • MAMMOTH™ 1000 Exterior Badging
  • Serial Number Engine Bay Plaque
  • Limited Edition 1 of 200
  • MAMMOTH™ Custom Front Bumper
  • MAMMOTH™ Custom Rear Bumper
  • LED Lights in Front Bumper
  • 20” Hennessey® 10 Spoke Wheels
  • Choice of 35” or 37″ Off-Road Tires
  • Front & Rear Leveling Kit
  • Electronic Fold-Out Steps
  • Hennessey® & MAMMOTH™ Exterior Badges
  • Professional Installation
  • 3 Year / 36,000 Mile Limited Warranty