Meet the All-New Mack® Keystone™
Built for the miles others won’t take.
At Nuss Truck & Equipment, we know that some jobs don’t happen on perfect pavement. They happen on gravel roads, rough terrain, job sites, forests, and remote routes where durability and capability matter most.
That’s exactly where the all-new Mack® Keystone™ shines.
Designed to handle both demanding off-road conditions and long highway miles, the Mack Keystone delivers a new level of versatility for fleets that need one truck capable of doing it all. Whether you’re hauling heavy loads to a remote jobsite or running highway miles between projects, Keystone transitions seamlessly from rugged terrain to open road without missing a beat.
Built for Tough Terrain and Long Hauls
The Mack Keystone is engineered to go where the work leads. With higher ground clearance, optimized approach angles, and robust suspension options, this truck is built to handle challenging environments without sacrificing comfort or stability.
For operators who split their time between rough terrain and highway driving, the available Mack MaxRide™ suspension provides exceptional ride quality—delivering comfort and control whether you’re navigating a jobsite or cruising down the interstate.
Proven Mack Power
Under the hood, the Keystone is powered exclusively by the Mack MP®13 engine, delivering up to 540 horsepower and 1,950 lb-ft of torque. Paired with the mDRIVE™ HD transmission, the Keystone is engineered for demanding applications where pulling power and durability are essential.
Even with that capability, efficiency remains a priority. Keystone delivers up to 6% improved fuel efficiency compared to the Mack Pinnacle™, helping fleets reduce operating costs over the long haul.
Designed Around the Driver
Long days behind the wheel demand comfort and smart design. The Keystone features a driver-focused interior built around visibility, ergonomics, and ease of use.
Drivers will appreciate features like:
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Wrap-around driver controls for intuitive operation
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High visibility for jobsite awareness and highway confidence
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A flat-bottom steering wheel for improved cab movement
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Premium seating for long-haul comfort
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An available digital mirror system for enhanced visibility
The cab also shares the advanced interior architecture found in the Mack Pioneer™ and Mack Anthem®, delivering the comfort and modern technology today’s drivers expect.
Built-In Connectivity and Uptime
Every Mack Keystone comes with a complimentary five-year subscription to Mack Connect, providing fleets with powerful tools to monitor truck performance and uptime.
With real-time telematics, remote diagnostics, and proactive service support, fleets gain the insights they need to keep trucks moving and reduce unplanned downtime.
Configured for Your Operation
For the first time, this class of vocational tractor offers even greater configuration flexibility. The Mack Keystone is available in:
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Axle-forward and axle-back configurations
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Day cab
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44-inch sleeper
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64-inch sleeper
This versatility allows fleets to spec a truck that fits their exact application—whether that’s heavy haul, construction support, energy sector work, or mixed highway and off-road operations.
The New Standard of Versatility
The Mack Keystone isn’t just built for the highway. And it’s not just built for the jobsite.
It’s built for both.
If your operation demands durability, performance, and flexibility in a single platform, the Mack Keystone delivers the capability Mack customers have relied on for generations.
Talk with the team at Nuss Truck & Equipment to learn more about availability, specs, and how the Keystone can fit your operation.