The US Army has awarded an $801m contract to Oshkosh Corporation for more than 2,450 new and recapitalised heavy expanded mobility tactical trucks (HEMTT) and palletised load system trailers (PLST).

Under the contract, the company will deliver more than 1,190 next-generation HEMTT A4s, over 180 new HEMTT A2s, more than 80 PLSTs and at least 1,020 recapitalised HEMTT A4s.

The HEMTT series vehicles have a payload capacity of 13t and can move at a speed of 89km/h with an operational range of 480km.

Enhancements on HEMTT A4 include a fully air-conditioned and armour-ready cab, more powerful drivetrain, improved suspension and other structural changes to make the installation of add-on armour in the field quicker and easier.

The PLS is designed to load and unload a variety of cargo in most challenging military missions. It features a self-contained system that reduces the need for forklifts or other material-handling equipment.

In addition the PLS truck and trailer can carry a demountable cargo bed, called a flatrack, that features a 16.5t payload capacity.

Oshkosh will rebuild the heavily used vehicles to new condition and upgraded to the new A4 configuration through remanufacturing and recapitalization services.

The recapitalised vehicles, which are considered to have zero miles and zero hours, will undergo the same road tests, performance tests and inspection procedures as new vehicles before being delivered.