Mack Trucks Debuts Keystone Class 8 Vocational Tractor at ConExpo 2026
Mack Trucks unveiled the all-new Keystone, a Class 8 vocational tractor designed for demanding on- and off-road use, at ConExpo-Con/Agg 2026 in Las Vegas.
540 hp
1,950 lb-ft
6%
What Happened
The Mack Keystone is a purpose-built Class 8 vocational tractor that combines terrain versatility with driver comfort and advanced safety. It is available in axle-forward and axle-back configurations, with three cab options: day cab, 44-inch sleeper, and 64-inch sleeper. For the first time, Mack is offering this class of vocational tractor in select international markets, including Latin America.
6%%
compared to the Mack Pinnacle
“The Mack Keystone represents our commitment to providing customers in agriculture, construction and vocational markets with a truck that’s as capable on rough terrain as it is on the highway.”
- Powered by Mack MP13 engine with up to 540 hp and 1,950 lb-ft torque
- Mack Maxride suspension for superior off-road performance
- Mack Protect safety suite
- Five-year complimentary Mack Connect telematics subscription
- Available in axle-forward and axle-back configurations
Why this matters
The Keystone expands Mack's vocational lineup with a truck that handles both highway and rough terrain, offering new axle configurations and availability in Latin America for the first time.
Terms in This Story
- Class 8
- The heaviest class of commercial truck, with a gross vehicle weight rating over 33,000 pounds.
- Vocational tractor
- A truck designed for specialized work such as construction, logging, or agriculture, often used both on and off road.
- Axle-forward/axle-back
- Configuration referring to the position of the front axle relative to the cab, affecting weight distribution and maneuverability.
Summarised from the linked release; details can be imperfect — always verify against the original source.