Remember when Hennessey Performance revealed the utterly bonkers VelociRaptor 6x6 a year ago and announced plans to build it?

Well, the company wasn’t kidding as it rolled out the first example on Tuesday at the 2017 SEMA show.

Based on the F-150 Raptor SuperCrew, the VelociRaptor 6x6 is 4-door performance pickup with locking rear axles, upgraded Fox suspension, custom 20-inch wheels, off-road tires, flared wheel arches, a sport bar and LED lights.

Yes, it’s a big, hulking truck, and yes it’s entirely worthy of competing against equally nutty 6-wheelers from across the pond such as the Mercedes-AMG G63 6x6 and Kahn Design Flying Huntsman 110 WB 6x6.

2017 Hennessey VelociRaptor 600 Twin Turbo based on the Ford F-150 Raptor

2017 Hennessey VelociRaptor 600 Twin Turbo based on the Ford F-150 Raptor

The starting price for the 2018 model year is $349,000, which includes the cost of the donor Raptor plus a tune of the 3.5-liter twin-turbocharged V-6 so that it delivers 605 horsepower and 622 pound-feet of torque, up from the stock 450 hp and 510 lb-ft rating.

The upgrade includes custom turbochargers, a high-flow exhaust system, a bigger intercooler, and full ECU tuning. For buyers with really deep pockets, Hennessey also offers an upgraded Brembo brake package, larger wheels, and interior upgrades for an additional $22,000.

The VelociRaptor 6x6 is available to order directly from Hennessey or through select Ford dealers. Just 50 are planned for the 2018 model year.

Hennessey has much more at the SEMA show, including the new Venom F5 hypercar. For more from the show, head to our dedicated hub.