- Mack introduced a new Class 8 vocational truck platform designed for demanding terrain and vocational operations.
- The model will enter production in Pennsylvania and become available for order in late Q3 2026.
The Mack Keystone vocational tractor was unveiled on March 2 ahead of ConExpo-Con/Agg 2026 at the Las Vegas Convention Center. Designed specifically for vocational applications, the truck integrates terrain capability, driver comfort, durability, and advanced safety features for heavy-duty job environments.
Purpose-Built Class 8 Vocational Platform
The new vocational truck platform targets demanding work environments such as construction, infrastructure, and heavy hauling. Built as a dedicated Class 8 vocational tractor, the vehicle emphasizes operational durability and flexibility across varied terrain conditions.
Customers will be able to order the model through the company’s dealer network beginning in late Q3 2026. While initial deliveries will focus on North American markets, the vehicle will also reach selected international regions. The launch marks the first time the manufacturer has introduced this category of vocational tractor in Latin America.
Powertrain and Performance Capabilities
The vehicle is powered exclusively by the Mack MP13 engine, delivering up to 540 horsepower and 1,950 lb-ft of torque. The powertrain is paired with the mDRIVE HD automated manual transmission, designed to support demanding vocational operations requiring strong torque delivery and efficient drivetrain control.
Suspension and Configuration Options
To support diverse vocational requirements, the truck is offered with axle-forward and axle-back configurations. An available Maxride suspension system is engineered to handle rough terrain while maintaining vehicle stability and ride performance under heavy loads.
Cab Options and Manufacturing Location
Three cab configurations are available, including a day cab, a 44-inch sleeper, and a 64-inch sleeper variant. These options provide flexibility for different vocational use cases ranging from regional operations to extended-duty assignments.
The vehicle will be assembled at the Lehigh Valley Operations facility in Macungie, Pennsylvania, where the company manufactures all Class 8 models for North American and export markets.
The Mack Keystone vocational tractor expands the manufacturer’s vocational truck lineup while introducing a new platform designed for demanding heavy-duty work environments.
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