All-New 2020 F-Series Super Duty Debuts Rock-Crushing Tremor

THE 2020 F-Series Super Duty is delivering next-level capability in an all-new way: the Tremor Off-Road Package. Tremor pushes the boundaries of Super Duty off-road capability with new hardware and tech to handle rough terrain, providing greater towing and payload than Ram Power Wagon.

Off-road upgrades start with a set of aggressive 35-inch-diameter Goodyear Wrangler Duratrac maximum-traction tires—the largest diameter tires available on a heavy-duty pickup— mounted on a set of unique 18-inch matte-finished black wheels. These tires, combined with a 2-inch front-end lift and shorter air dam, result in an impressive 10.8 inches of ground clearance, best-in-class water fording of 33 inches, and the best approach and departure angles of any Super Duty ever—31.65 degrees and 24.51 degrees, respectively.

Progressive-rate springs balance heavy-duty towing performance needs while also controlling body motion on rutted, rock-strewn trails. The rear stabilizer bar is tuned for a lower spring rate so customers experience less head toss over obstacles during severe suspension articulation.

Custom 1.7-inch piston twin-tube dampers work to control body motion. These massive shocks feature substantial oil volume that serves to keep internal temperatures low, while the large cross-section works to improve responsiveness. At very low speeds, they are tuned for soft damping, which is dialed up for control over more severe impacts. Internal hydraulic rebound helps soften the blow of the hardest hits.

Tremor uses a locking rear differential with electronic shift-on-the-fly engagement and a new Dana limited-slip front differential. In certain modes, the front axle can sense when a tire has lost traction and use the brakes to send power to the wheel with traction.

Additional hardware includes off-road running boards that tuck up next to the body for damage control, extended-axle vent tubes and the same beefy skid plates as fitted to FX4 models.

The 2020 Super Duty Tremor features selectable drive modes, which allow customers to choose the setting best suited to driving conditions. These include normal for around-town use, tow/haul for optimized performance under load, eco for enhanced fuel economy, slippery for icy conditions and deep snow/sand for low-traction conditions. Unique to Tremor is a new rock-crawl mode, which is optimized to operate in 4×4 low and is enabled by the standard TorqShift 10-speed automatic transmission. Tremor trucks equipped with the 7.3-liter gas engine have a 53:1 crawl ratio while those equipped with the 6.7-liter diesel engine have a 44:1 crawl ratio. For the first time ever, Super Duty gets Trail Control, a feature that debuted for F-150 Raptor and Ranger. It functions in any mode like cruise control for off-road driving.

The Tremor Off-Road Package should be available by the time you read this.