Mack Unveils Keystone and All-New Granite at CONEXPO

Mack Trucks introduced two new Class 8 vocational platforms ahead of CONEXPO-CON/AGG 2026: the Mack Keystone vocational tractor and the all-new Mack Granite.

The Keystone is designed for heavy-haul and vocational tractor applications in construction and agriculture. It is powered by the Mack MP13 engine rated up to 540 horsepower and 1,950 lb.-ft. of torque and paired with the mDRIVE HD automated manual transmission.

“The Keystone is designed for terrain versatility; it thrives where the roads are unpaved, uneven or even nonexistent, then transitions seamlessly to highway driving,” said Fernando Couceiro, Mack Trucks vice president of highway trucks.

Available in axle-forward and axle-back configurations with multiple rear axle options, the Keystone shares platform architecture with the Mack Pioneer, Anthem and Granite.

The all-new Granite features a redesigned galvanized steel cab, expanded radar-based safety systems and updated bodybuilder integration via BodyLink IV. The available Mack Protect safety suite includes 270-degree radar coverage and Electronic Park Brake with rollaway protection.

“The all-new Mack Granite embodies everything Mack stands for: legendary durability, uncompromising performance and a commitment to our customers who depend on these trucks to get the toughest jobs done,” said Stephen Roy, president, Mack Trucks.

The Granite will enter production in January 2027. The Keystone will be available for order in late Q3 2026.