product
CARLI 2017-22 FORD SUPER DUTY 4.5"/5.5" BACKCOUNTRY SYSTEM -DIESEL
SKU: CS-F45-BC-CS-17
$3,678.00USD

CARLI 2017+ FORD SUPER DUTY ADJUSTABLE TRACK BAR
SKU: CS-FATB-17

CARLI 2005+ FORD SUPER DUTY CASTER SHIM - 4.5"/5.5" - 1.0 DEGREE
SKU: CS-FCASTERSHIM-45

CARLI 2005+ FORD FRONT RESERVOIR MOUNT 2.5"
SKU: CS-FRM-25

05-24 FORD F250/350 4X4 DIESEL PROGRESSIVE COIL SPRINGS - 4.5"/5.5" LIFT
SKU: CS-FMRC-05

CARLI 2017-22 FORD SUPER DUTY BRAKE LINES F/R - 4.5"/5.5"
SKU: CS-FORDBBL-45-17

CARLI 2017-22 FORD RADIUS ARM DROP BRACKETS - 4.5"/5.5"
SKU: CS-FRAD-17

17-24 FORD F250/350 4X4 FRONT BUMPSTOP DROP - 4.5"/5.5" LIFT
SKU: CS-FBDF-45-17

05-24 FORD F250/350 4X4 CARLI-SPEC 2.0" RR 4.5"/5.5" LIFT FRONT & REAR SHOCK PKG
SKU: AS-F45SPKG-CS20RR-A
learn more
- Description
Designed for those seeking the ultimate balance of on-road comfort and off-road capability, the Super Duty Backcountry 2.0 System allows you to enjoy your 8,500lb truck without sacrificing usability or ride quality. Perfect for drivers who want a little dirt-road fun, this system transforms your Super Duty into a versatile all-terrain vehicle.
Key Features:
-
Premium Shock Technology:
- Utilizes Carli SPEC 2.0″ Diameter Remote Reservoir shocks crafted from 6063 aluminum with an anodized finish for corrosion resistance.
- Features a 5/8″ hardened steel chrome-plated shaft for enhanced durability.
- Fully serviceable and rebuildable, equipped with 1-piece bushings in 6061 billet rod ends.
- Spec’d with premium 5WT oil for balanced lubricity, consistent damping, and optimal temperature performance.
- Backed by a 1-year warranty, serviced by Carli.
Enhanced Ride Height and Travel:
-
Increased Front Height:
- Rides 5.5” higher in the front, thanks to taller Progressive Rate Coil Springs that provide additional wheel travel.
-
Optimized Front Geometry:
- Radius Arm Drop Brackets: Reset the pivot point for linear travel, improving ride quality.
-
Sway Bar Geometry: Addressed with your choice of:
- Sway Bar Drop Bracket & Carli Extended Sway Bar End Link combination for a more economical solution.
- Full Replacement Torsion Sway Bar for enhanced ride quality and articulation with minimal body roll.
- Bump Stop Drops: Protect shocks from over-compression.
- Adjustable Track Bar: Centers the front axle for better handling.
- Stainless Brake Lines: Ensure proper braking performance with adequate length for increased travel.
- Caster Shims: Tighten steering for improved responsiveness.
Rear Suspension Options:
-
Leaf Spring Configurations:
- Choose between a Full Progressive Spring Pack (reducing capacity to a "light" ¾-ton) or a Progressive Add-A-Pack that maintains payload capacity while eliminating the factory block.
-
F250 vs. F350 Considerations:
- The F250 has a lighter rate spring pack (2 main leaves), while the F350 features a stiffer setup (3 main leaves).
- The F250 Add-A-Pack provides a noticeable improvement over stock, while the F350 Add-A-Pack may remain stiff unless loaded.
-
Capacity Solutions:
- We recommend the Full Replacement Leaf Spring Packs for both trucks, especially for the F350, which has stiff factory springs.
- If you own an F250 with the Tremor or high-capacity tow package, these come equipped with an F350 rear spring and should avoid the add-a-pack.
- For those concerned about capacity, consider an aftermarket airbag system to restore F350 capabilities. Ensure the system allows airbags to disconnect during suspension cycling for maximum rear travel.
- The Full Progressive Leaf Spring Pack shifts the axle slightly forward for maximum tire clearance with 37” M/T tires at full compression.
Wheel and Tire: Factory Wheels SHOULD NOT be run with oversized tires. They’re known to rub the radius arm, sway bar and most concerning – Brake Lines. Factory tires and factory wheels will work without issue but we DO NOT recommend running oversized tires on factory wheels. On our 4.5” Ford Systems, we recommend 17”-18” wheels, no more than 9” wide with 5” of backspacing with a 37”, E-Rated Tire. The more rubber, the better the small bump compliance will be at proper inflation pressures. The ride will firm up as you go larger in wheel diameter. For more details, see our article on wheel and tire selection and tire pressures.
you may also like

30307 Ranch Rd 12 Suite 400, Dripping Springs Tx 78620
LOCATED IN DRIPPING SPRINGS, TEXAS, THOR OFF-ROAD ARE EXPERTS IN DESIGNING AND BUILDING OFF-ROAD VEHICLES THAT DELIVER THE EXACT PERFORMANCE AND STYLE THAT OUR CUSTOMERS DREAM ABOUT.
© copyright 2026 Thor Off-road











