A new 23,000-lb. rear axle and 325-horsepower engine rating boost durability and performance for vocational customers.

When paired with the 325 hp engine rating and the Allison 3000RDS transmission, the Mack MD is now capable of increased ...

Mack Trucks has expanded its MD Series line with a new 23,000-lb. rear axle offering and a 325 hp engine rating. Mack says ...