The Ford Super Duty Tremor Off-Road Package has been the go-to factory off-road upgrade for serious Nassau County buyers since Ford introduced it - and for 2027, it gets significantly more accessible by opening to every trim level in the lineup.
Contractors heading to remote job sites, campers running into state parks, and weekend off-road drivers on Long Island’s barrier island terrain all have a new entry point. Here is what the Tremor package actually includes, who it is built for, and what changed for this model year.
Bottom Line: The Tremor is the most capable off-road configuration on the Super Duty, now available on XL through Platinum.
- 35-inch off-road tires standard in the package across all trims
- Electronic-locking rear differential and front limited-slip for serious traction
- Rock Crawl, Trail Control, and Trail Turn Assist included
- Now available with the 8-foot long bed on XLT, Lariat, King Ranch, and Platinum
What Is Included in the Tremor Off-Road Package
The Tremor package is a single factory-built bundle of hardware and software that transforms a standard Super Duty into a purpose-built off-road platform. Every element works together rather than functioning as individual add-ons.
For the full Super Duty breakdown by trim, see our Ford Super Duty F-250 buyer’s guide for Nassau County.
Tires and Wheels
The Tremor rides on 35-inch LT285/75R18 off-road tires mounted on 18-inch Ebony Black machined wheels, plus a matching conventional spare tire. The 35-inch tires provide the ground clearance and sidewall volume needed for uneven terrain without sacrificing the Super Duty’s load-rating structure.
For comparison, standard Super Duty trims ride on 17-inch to 20-inch wheels depending on the trim level. The 35-inch tires are a significant jump in both appearance and capability.
Axles and Differentials
The Tremor includes an electronic-locking rear differential and a front limited-slip differential. On gas models, the final drive ratio is 4.30. On diesel models, the ratio shifts to 3.55 electronic-locking.
These axle configurations work differently from the standard Super Duty’s non-limited-slip rear. When traction drops under one rear wheel - on wet grass, mud, sand, or snow - the electronic locker redistributes torque to the wheel with grip. The front limited-slip does the same work up front. For Nassau County buyers who use the truck on unpaved commercial lots, beach ramps, or remote construction sites, this hardware provides real traction where standard equipment would not.
Suspension and Shocks
The Tremor adds raised front springs and performance front and rear shocks. This lifts the truck’s ride height, increases approach angle for climbing obstacles, and absorbs impacts on rough terrain more effectively than the standard suspension tuning.
The ride characteristic on pavement is different from a standard Super Duty - slightly firmer on highway but better controlled on uneven surfaces. For trucks that spend meaningful time off-pavement, the Tremor suspension is a worthwhile trade.
Underbody Protection and Off-Road Hardware
The package includes skid plates for the transfer case and fuel tank, unique front air dams designed to improve the approach angle, and water-fording vent tubes. The vent tubes allow the Super Duty to wade through water without hydro-locking the drivetrain - useful for contractors crossing flooded access roads or for beach-driving in the Hamptons and Fire Island ferry areas.
Off-road running boards complete the ground-clearance equation - they are designed to not reduce the approach and departure angles the raised suspension creates.
"Opening Tremor to the XL changes who this package is for. A landscaper or contractor who needs the off-road hardware but not a Lariat interior can now have both without paying premium-trim prices. That is a real shift for Nassau County buyers."
General Manager, Levittown Ford
Drive Modes Included with Tremor
Three trail-specific drive modes come with the Tremor package: Rock Crawl, Trail Control, and Trail Turn Assist.
Rock Crawl mode reduces throttle response and applies engine braking for precise, slow-speed maneuvering over obstacles. It is the go-to mode for technical terrain where tire speed needs precise control.
Trail Control functions like cruise control for off-road driving - it maintains a set low speed automatically so the driver can focus entirely on steering and obstacle placement without managing the throttle and brake simultaneously. Long Island’s beach driving terrain is exactly the use case where this system reduces fatigue.
Trail Turn Assist reduces the inside rear wheel speed during tight low-speed off-road turns, tightening the turning radius on narrow trails. For a full-size Super Duty crew cab on a rutted access road, this mode meaningfully reduces the turning radius requirement.
Mid-Article CTA
Levittown Ford stocks Super Duty inventory across all trim levels, including Tremor-configured models. Our team can walk through the full package details and available configurations for Nassau County buyers.
Browse Super Duty Tremor inventory - Schedule a visit at Levittown Ford
What Changed for 2027: Tremor Now Across All Trims
Previously, the Tremor was limited to mid-tier and upper-tier Super Duty configurations. For 2027, Ford expanded Tremor availability to every trim in the lineup, including XL - and added 8-foot bed availability on XLT, Lariat, King Ranch, and Platinum.
This matters for two types of buyers. Contractors who need the off-road hardware but do not need a premium interior can now spec it on an XL work truck and save money compared to a Lariat Tremor. Buyers who specifically need the longer 8-foot bed - common for contractors hauling lumber, piping, and long materials - can now combine it with the Tremor’s off-road capability on the XLT and above.
The XL Tremor requires the STX Appearance Package and the Driver Assist Package as prerequisites. On higher trims, the Tremor adds on without prerequisites.
Tremor vs. FX4 Off-Road Package
The Super Duty also offers the FX4 Off-Road Package, which is less expensive than the Tremor and available on all 4x4 pickups. Buyers often ask how the two compare.
FX4 includes: Hill Descent Control, off-road tuned front and rear shocks, Rock Crawl mode, skid plates for transfer case and fuel tank, and an FX4 box decal. It requires a locking rear differential on single rear wheel trucks.
Tremor adds over FX4: 35-inch tires (vs. standard), raised front springs, electronic-locking rear diff plus front limited-slip, off-road running boards, water-fording vent tubes, unique front air dams for better approach angle, Trail Control, and Trail Turn Assist.
The FX4 is the right choice if you need occasional moderate off-road capability without committing to the 35-inch tire package. The Tremor is the right choice if your terrain demands are serious - rutted sites, sandy terrain, creek crossings, or technical trails.
For safety information on Super Duty models, consult the NHTSA vehicle ratings database for available federal testing data.
FAQ
Does the Tremor package affect towing capacity? The Tremor package includes the F-250 higher-GVWR package. For specific towing and payload figures by configuration, consult Ford’s RV and Trailer Towing Guide or discuss with Levittown Ford.
Can the Tremor be combined with the Carhartt Package? No. The Carhartt Package and Tremor Off-Road Package cannot be combined on the same build.
Is the Tremor available on dual rear wheel (DRW) Super Duties? No. The Tremor is a Crew Cab 4x4 single rear wheel configuration only.
Does the Tremor change the tow mirrors or trailer aids? The Tremor package itself focuses on the off-road hardware - tires, suspension, differentials, and drive modes. Trailer mirrors and Pro Trailer Backup Assist are separate options available on the trim level the Tremor is installed on.
What is the water-fording depth with the Tremor package? Ford does not publish a specific fording depth. The water-fording vent tubes protect the drivetrain components during shallow crossings, not deep submersion. Exercise caution in any water crossing.
Is the Tremor available in Regular Cab or SuperCab configurations? No. The Tremor package requires the Crew Cab body style with 4x4 single rear wheel.
Closing CTA
The Ford Super Duty Tremor Off-Road Package delivers factory-built off-road capability that aftermarket upgrades cannot match for warranty coverage and resale value. 35-inch tires, locking axles, trail drive modes, and a raised suspension are now available from the XL work truck all the way through Platinum.
Levittown Ford is your Nassau County Super Duty dealer, serving buyers from Levittown, East Meadow, Wantagh, Seaford, and Long Island’s South Shore.
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Levittown Ford - Nassau County’s Super Duty specialists, serving East Meadow, Wantagh, Seaford, and the South Shore.