At CONEXPO-CON/AGG 2026, Mack Trucks introduced two new vocational models: the Mack Keystone and the all-new Granite.
The Keystone is a Class 8 vocational tractor engineered for mixed on- and off-road applications including construction and agriculture. It features higher ground clearance, increased approach angle and the available Mack Maxride suspension system designed for demanding terrain.
“The Keystone delivers exactly that: terrain versatility to navigate challenging road conditions, combined with the best ride quality in the business,” said Jonathan Randall, president of Mack Trucks North America.
The Keystone 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 transmission. Mack reports up to 6% improved fuel efficiency compared with the Pinnacle.
The redesigned Granite introduces a new cab platform, expanded safety systems and enhanced bodybuilder integration. Available safety features include 270-degree radar coverage, Electronic Park Brake with rollaway protection and E911 auto-call capability.
“We’re bringing safety technologies to the North American vocational market that have never been available before,” said Alex Lee, Mack Trucks senior product manager for vocational and medium duty.
The Granite also features Mack’s MaxRide air load distributing suspension and updated mDRIVE transmission options.
The Keystone will be available for order in late Q3 2026. The Granite will be available for order in the latter half of 2026 with production beginning in January 2027.
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