Ford is offering a new Tremor Off-Road Package for the 2020 F-Series Super Duty, available on a variety of trim levels on F-250 and F-350 trucks with either the new 7.3-litre gas V8 or 6.7-litre Power Stroke diesel engine.
Off-road upgrades start with a set of 35-inch-diameter Goodyear Wrangler Duratrac maximum-traction tires, mounted on a set of 18-inch matte-finished black wheels. These tires, combined with a 2-inch front-end lift and shorter air dam, result in 10.8-inches of ground clearance, 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 that the drivers experience less head toss over obstacles during severe suspension articulation, Ford said. Custom 1.7-inch piston twin-tube dampers work to control body motion. These 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.
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 uses 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 beefy skid plates.
The Tremor also features selectable drive modes which 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-litre gas engine have a 53:1 crawl ratio while those equipped with the 6.7-litre 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.
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