The Oshkosh Defense HEMTT A4 is the latest version of the Heavy Expanded Mobility Tactical Truck  aka HEMTT, which entered US Army service in 1982. The A4 version can either be a new build vehicle or installed as an upgrade in the HEMTT Recap Process when the vehicle is stripped and rebuilt as a 0-hour condition. The A4 upgrade is across the whole HEMTT variants and then re-designated the HEMTT A4.

The HEMTT A4 offers significant improvements and advancements in power, maintenance, and soldier safety. It has a new moe powerful 500hp Caterpillar C15/17 engine. Major changes and additions to the cab allow for greater soldier comfort and superior safety with the most up-to-date integrated armor and under-cab protection.

HEMTT A4 M977A4 Cargo Truck

21,561 pound (9780 kg) payload capacity

On-board crane with 4,500 pound (2041 kg) load capacity

Optional 20,000 pound (9072 kg) self-recovery winch

Anti-lock braking system