Hennessey is known for taking what most people would consider as monster performance, and then adding more. This Hennessey Mammoth 6×6 is surely the ultimate in excess?

After Dodge unveiled the Ram TRX, we all thought wow, a truck with a 702hp 6.2-litre supercharged V8, that’s cool, and also bonkers. But Hennessey doesn’t like doing things by half measures, and well, why does a truck need just 702hp and four wheels? Enter the Hennessey Mammoth 6×6.

As the name suggests, it has a mammoth amount of power. Instead of using the standard Ram TRX 6.2-litre engine, it uses a 7.0-litre Hellephant crate engine, that’s been breathed on ever so slightly to produce a, again, mammoth 1200bhp. Oh, and you’ll notice it’s got some extra wheels too, hence the 6×6.

It’s not all that’s new, but it’s certainly the headliner. Those wanting the upgrade will also benefit from new front and rear bumpers, LED lights, uprated suspension and a new, bespoke interior.

You might be thinking who in their right mind would buy one? And you won’t be alone either, we’re wondering who has enough spare cash laying around to spend $500,000 on one? Well, rest assured, if we did have a spare $500k, we’d probably be ordering one, because, why not? Only three are being built, making it not only the most monstrous truck on the market, it’s also one of the most expensive and exclusive too. That being said, Hennessey also builds the Velociraptor 6×6 and the Chebrolet Goliath 6×6, of which it has sold 15 worldwide, so there’s clearly demand for crazy.

“We are very excited about the Ram TRX,” said company founder and CEO, John Hennessey.  “Mammoth 6X6 powered by a 1200 HP Hellephant motor is just a completely ridiculous idea, which is exactly why we are doing this.  We are only going to build three examples which will likely make this the most exclusive and most expensive truck we’ve ever built.” We love it.


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