1992-2006 Hummer H1 Cotton T-Shirt

The Hummer H1, produced from 1992 to 2006, dominated extreme off-road terrain with an unmatched 16 inches of ground clearance and the ability to climb a 60-percent grade. Born from the military Humvee, this civilian titan conquered obstacles that stopped traditional four-wheel-drive vehicles cold.

Under the massive hood of the ultimate Alpha spec lies the Duramax LLY, a 6.6-liter turbo-diesel V8 engine. This powerplant produces 300 horsepower at 3,000 rpm and a massive 520 pound-feet of torque at 1,500 rpm, delivering the low-end grunt required to crawl over boulders and haul heavy payloads.

Its steel box frame features fully independent double-wishbone suspension and portal gear hubs that raise the half-shafts for maximum clearance. Power travels through an Allison 1000 five-speed automatic transmission to a full-time four-wheel-drive system with Torsen locking differentials.

With only 11,818 civilian units built, the H1 is a highly prized collector vehicle today. It transitioned the military M998 Humvee into the public sphere and was eventually succeeded by the consumer-grade Hummer H2, cementing the original model as the toughest, most uncompromising truck of its era.