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Volvo Group (AB Volvo)2 MarConventionalHigh confidence

Mack Launches All-New Keystone Vocational Tractor at ConExpo-Con/Agg 2026

Horsepower

540 hp

Torque

1,950 lb-ft

Fuel efficiency gain

up to 6%

What Happened

The Mack Keystone is a new vocational tractor built on the legacy of the Mack Pinnacle, sharing advanced technology and safety features with the Mack Pioneer and Anthem. It offers higher ground clearance, a robust suspension, and the Mack Maxride suspension for demanding conditions. The truck is available in axle-forward and axle-back configurations, with three cab options: day cab, 44-inch sleeper, and 64-inch sleeper.

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

up to 6%

compared to the Mack Pinnacle

The Keystone is powered exclusively by the Mack MP13 engine delivering up to 540 hp and 1,950 lb-ft of torque, paired with the mDRIVE HD automated manual transmission. It includes Mack's uptime solutions with a five-year complimentary subscription to Mack Connect telematics.

Why this matters

The Keystone offers a unified platform with modern comfort and safety for heavy-duty jobs, responding to customer demand for terrain-versatile trucks. It marks Mack's first offering of axle-forward and axle-back configurations in this class.

Terms in This Story

Vocational tractor
A heavy-duty truck designed for specific job applications like construction, logging, or agriculture.
Axle-forward
A configuration where the front axle is positioned closer to the front of the vehicle, affecting weight distribution and maneuverability.
Axle-back
A configuration where the front axle is set back from the front, often used for better weight distribution on rough terrain.
mDRIVE HD
Mack's automated manual transmission designed for heavy-duty applications, providing smooth and efficient power transfer.
Read Original: Volvo Group (AB Volvo)

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