Mack Rolls out new Granite and Keystone at ConExpo 2026

Mack’s ConExpo 2026 Round-up: New Granite Platform, Keystone Vocational Tractor, and a Deeper Tech Push for Upfits and Visibility

Mack Trucks used ConExpo-Con/Agg 2026 in Las Vegas to reset its vocational story on three fronts: a fully redesigned Granite, a new mixed-terrain Class 8 tractor called Keystone, and a new electrical architecture (BodyLink IV) aimed at reducing complexity for bodybuilders and fleet technicians. The technology layer also extends to CommandView, a camera-and-sensor suite scheduled to reach the Granite order sheet later in the decade.

All-new Granite: a clean-sheet vocational rethink

The Granite launch was positioned as more than a model update. The truck moves to an all-new cab and interior package, with a galvanised steel cab and a noticeably larger footprint. The headline dimension is nine inches of added width at the B-pillar, aimed at increasing usable cabin volume for vocational duty cycles where drivers are in and out all day.

Mack also highlighted packaging choices that matter in the upfit world. The Granite keeps a 113.5-inch bumper-to-back-of-cab dimension in both axle-forward and axle-back configurations, a detail tied to body adaptation and regulatory compliance across markets.

Inside, the Granite’s cab layout was developed based on driver feedback gathered during an evaluation clinic at Virginia Tech. The result is a driver-focused control layout, new digital instrumentation, and a set of “workday” features such as reinforced mounting points for devices, multiple power outlets including dual USB-C, and a bodybuilder tower between the seats for mounting vocational controls and gauges.

Safety moves closer to highway-truck spec

A big part of the Granite narrative at ConExpo was safety technology migrating into vocational applications. The available Mack Protect suite combines a front camera and front radar with 270-degree radar coverage, including both driver-side and passenger-side radar systems.

Granite also brings an electronic park brake with rollaway protection and auto-release logic when shifting into gear, plus E911 auto-call as standard equipment. E911 auto-call is designed to contact emergency services when the truck is within cellular range and a collision, rollover, or airbag deployment is detected.

Visibility hardware extends beyond radar. The Granite spec list includes standard LED headlamps and fog lamps, optional cornering lights, and optional camera and digital mirror systems, depending on configuration.

Powertrain and ride: MP13, mDRIVE updates, and MaxRide suspension

On performance, the Granite is paired with the new Mack MP13, rated up to 540 hp and 1,950 lb-ft of torque, with a stated fuel-efficiency improvement versus the prior engine. The updated mDRIVE automated manual comes in 12-, 13-, and 14-speed configurations, with low-speed reduction gearing aimed at heavy loads and precision site work.

Granite also carries an alternative engine path for fleets that prefer it: a Cummins X10 rated 350 to 450 hp with an Allison automatic transmission.

Chassis-wise, Mack put emphasis on MaxRide, an eight-bag air load distributing suspension designed to balance load management and ride quality across rough access roads, job sites, and city streets.

Timing is clear. Ordering opens in the latter half of 2026, with production scheduled to begin in January 2027 at Mack’s Lehigh Valley Operations plant in Macungie, Pennsylvania.

Keystone: a new Class 8 vocational tractor aimed at mixed terrain

Alongside Granite, Mack introduced the Mack Keystone, a purpose-built vocational tractor intended for operations that bounce between highways and off-road or poor-road environments: construction, agriculture, logging, livestock hauling, and similar work.

Keystone is offered in axle-forward and axle-back configurations, with day cab, 44-inch sleeper, and 64-inch sleeper options. Rear axle configurations include 6×4, 8×4, and 8×6, reflecting the model’s focus on traction and stability in variable terrain.

The Keystone is MP13-only, again up to 540 hp and 1,950 lb-ft, paired with mDRIVE HD. Ordering is scheduled for late Q3 2026, with availability framed around Mack’s dealer network.

BodyLink IV: electrical architecture aimed at faster, cleaner upfits

BodyLink IV is the less flashy, high-impact part of the ConExpo package. It is a next-generation chassis-to-body electrical integration system introduced for Granite, built around expanded prewiring, flexible connections, and programmable logic intended to reduce wiring complexity during upfits.

The published feature set includes dedicated power and signal connectors, programmable flex switches, programmable connector pin-outs, hardwired switches, BB-CAN two-way communication, and customizable body information in the instrument cluster. For fleets and bodybuilders, the payoff is consistency: fewer one-off electrical solutions, cleaner diagnostics, and faster installation across repeat builds.

CommandView: 360-degree visibility, payload tools, and cloud video, but later timing

Mack also used the show to outline CommandView, a suite built around a stitched 360-degree composite (bird’s-eye) view using multiple cameras. It adds angled side-view cameras that trigger with turn signals, and can be specified with audible and visual warnings when a person or object is detected within certain close ranges.

CommandView ties into vehicle controls by adjusting camera perspectives based on gear selection. It also adds event-based video capture that can be triggered automatically or manually and stored in the cloud for fleet visibility.

Beyond visibility, CommandView includes an onboard weighing function compatible with all axle configurations, roof-mounted LED indicators intended to help loader operators hit target payloads, and integrated truck-specific navigation and job summaries designed to reduce admin time and billing errors.

The important caveat is timing: CommandView is scheduled to be available to order on the Mack Granite in late 2027.

What this adds up to for the vocational market

Taken together, Mack’s ConExpo 2026 reveals a point to a tighter platform strategy: shared cab and safety architecture across the newer truck family, more standardised upfit interfaces, and a move toward camera and sensor stacks that have typically been associated with on-highway fleets.

The practical test will be how quickly bodybuilders adopt BodyLink IV workflows at scale, and how well systems like radar coverage and multi-camera visibility hold up in the messier reality of job sites, where dirt, vibration, and frequent trailer and body changes are part of the week.

Mack Rolls out new Granite and Keystone at ConExpo 2026 published on The HeavyQuip Magazine.