Michigan-based Mil-Spec Automotive is quite the name when it comes to aftermarket mods. The company specializes in transforming civilian-model Hummer H1s to rather rugged beasts. The company had recently built a Ford F-150 as well, but it is back again to its niche. Mil-Spec has gotten hold of a Hummer H1 yet again and has transformed it into an apocalypse-ready off-roader.

The company has made exterior and interior upgrades and bumped up the drivetrain power figures for a price tag of $300,000 on this bespoke H1 Supertruck build. Now that Hummer has taken a complete U-turn on its personality and is ready to debut as an EV, this build should make some old-school off-road aficionados more than happy.

What Makes This Hummer H1 Supertruck By Mil-Spec Automotive Special?

Thanks to this, the company was able to equip 38-inch Toyo Open Country M/T tires to tackle all sorts of off-roading conditions. The standard exterior panels are replaced with aerospace-grade aluminum panels that give it extra rigidity and protection.

Mil-Spec has installed heavy-duty rocker panel protection skid plates to keep the Supertruck safe from the underbody hits. Apart from this, an underbody and engine bay coating were also added to provide insulation and thermal protection for the cabin. As for the paint job, the H1 was first sprayed in an Onyx black paint scheme and then covered in a Deep Sky Black Kevlar-infused polyurethane coating. This was finally offset with semi-gloss black powder-coated accents.

For a truck with this demeanor, you’d expect a basic cabin with barely any creature comforts. But, that’s not the case with this Mil-Spec build. The aftermarket company has teamed up with Formawerx to create premium components that are used throughout the cabin. The seats are wrapped in Onyx-colored Nappa leather with a quilted stitching pattern along with custom lumbar support.

This H1 Supertruck also comes with a custom-machined steering wheel that complements the overall theme of the cabin. Behind this steering wheel are custom-designed gauges that feature anodized black bezels. The cabin doors include specially designed billet aluminum door lock pulls finished in black powder-coat. To wrap it all off, the company has equipped the truck with a JL Audio system.

These Mechanical Upgrades Have Transformed The H1 Completely

Mil-Spec has not mentioned which model year this particular build is. The last model featuring the 6.6-liter Duramax engine churned out 300 horses and 520 pound-feet of torque. Mil-Spec has given this engine a heavy boost and it now makes 500 ponies and 1,000 pound-feet of twist. The engine is mated to a six-speed Allison automatic gearbox.

The aftermarket company has included a heavy-duty drivetrain configuration that includes a redesigned independent front and rear drive-shafts, carrier bearings, motor mounts, and transmission cross member. This truck isn’t a full-time all-wheel-drive unlike the old school H1s; it comes with a part-time four-wheel-drive transfer case that can send power only to the rear wheels as well. Coming to its stopping power, Mil-Spec has installed Wilwood six-piston high-performance brakes to take care of the braking duties.

As mentioned earlier, the Hummer H1 rides 13 inches off the ground. This comes courtesy of an upgraded "Baja" suspension setup that boasts 13 inches of travel range. The setup includes longer coil springs, remote reservoir shocks, stronger front and rear ball joints, and a sway bar. A Bumper Tow Package is also offered on this build that includes a two-inch ball hitch, electrical plugs, and a rearview camera for trailering. Finally, this thirsty Hummer H1 Supertruck also features a new 30-gallon fuel tank alongside a fully integrated steel skid plate for added protection.

Final Thoughts

Considering all the upgrades made by Mil-Spec and the fact that this is a Hummer, this isn’t an inexpensive build. The company said that this was built for a client as per his requirements and set him back $300,000. The price includes the donor vehicle as well.

The H1 Supertruck is the vehicle that can save you in case of an apocalypse. Despite its Brobdingnagian size, it looks like a competent off-roader, thanks to its lateral upgrades. BossHunting.com.au quoted Mil-Spec saying that the truck can hit the 60 mph mark in “low six to high five ”. If true, this is mighty impressive. Not to mention, the cabin is also a pleasant surprise because you don’t expect such plushness from a military-grade vehicle.