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Carli Suspension 2.5" Backcountry 2.0 System for 2017+ F250/F350, Base, Diesel

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Carli Suspension Backcountry System for '17+ Super Duty

SKU: CS-FLVL-BC20-17 - Ford Leveling Backcountry System

3.5" Lift - 2020+ F250/350 4x4 Diesel, Base Kit
2.5" Lift - 2017-19 F250/350 4x4 Diesel, Base Kit

Carli Suspension Signature Tuned 2.0" Remote Reservoir Shocks provide users with a comfortable, greatly improved on-road ride and entry-level off-road capability. This system is the beginning of the Utilitarian suspension lineup.

Shock Diameter - 2.0"
Lift Height - 2017 - 2019 2.5"
Tire Size - Up To 37"
Front Travel - 9.6"
Rear Travel - 13"

Base Kit Includes:

CS-FLC-05 - Front Leveling Coils
CS-FBC20SPKG-LVL-05-PAP - Carli Custom Tuned Fox 2.0" Remote Reservoir Shocks, Front and Rear with Reservoir Mounts
CS-FORDBBL-17-F - Front Brake Lines
CS-FCASTERSHIM-25 - 2 Degree Caster Shims
CS-FBDF-2.5-17 - High Clearance Bump Stop Drops, Front
CS-FATB-17 - Track Bar


Kit Options:

Sway Bar Option Description

Sway Bar Drop Brackets, Leveling +$
     - Corrects Sway Bar Geometry in Carli Leveling Suspensions
     - Fitment: 2017+ F250/350 4x4

     Sway Bar Drop Brackets, Leveling

Sway Bar End Links, Leveling +$
     - Extended Length to accommodate Leveled Trucks
     - 17-4 Stainless Steel, Greaseable and Fully Rebuildable
     - Excellent Articulation
     - Only Works on Carli Leveling Lifts
     - Fitment: 2017-19 F250/F350 4x4

     Sway Bar End Links, Leveling

Torsion Sway Bar - WITH End Links, Leveling +$
     - Direct Fitment to Carli Leveling Lifts
     - Replaces Immobile Factory Sway Bar with Custom Torsion Bar
     - Huge Ride Quality Improvement
     - Includes CS-FEL-LVL-17 Drop Brackets and Sway Bar Links
     - Fitment: 2017-19 F250/F350 4x4

     Torsion Sway Bar - WITH End Links, Leveling

Rear Leaf Option Description

Ford 17+ Progressive Add-A-Packs - Leveling +$
     - Built in the U.S.A. By Deaver Leaf Springs
     - Smooth Progressive Design
     - Supplied with Bump Stop Drops, U-Bolts, and Hardware
     - Pairs to Carli Leveling Lifts, Provides 1/2" - 1" high rear stance
     - Eliminates the Factory Block
     - Load capacity is maintained, and ride quality is improved
     - Fitment: 2017+ F250/F350 4x4


Ford 17+ Full Progressive Leaf Springs - Leveling +$
     - Block eliminating, Full Progressive Spring Pack
     - "Light" 3/4-Ton Capacity, Max Bed-load 2,000 lbs.
     - Includes new U-Bolts and Rear Bump Stop Drops
     - Provides a 1", rear high stance on Matching 2.5" Leveling Suspension Systems
     - 37" Tire Fitment
     - Fitment: 2017+ F250/F350 4x4, Diesel 3.5" - 4.0" Axle Tube

     Full Progressive Leaf Springs

Ford 17+ Full Progressive Leaf Springs - Leveling +$
     - Block eliminating, Full Progressive Spring Pack
     - Heavy Duty Full Replacement Leaf Springs designed for those with constant 1,000 lbs. in the bed
     - Includes new U-Bolts and Rear Bump Stop Drops
     - Provides a 1", rear high stance on Matching 2.5" Leveling Suspension Systems
     - 37" Tire Fitment
     - Fitment: 2017+ F250/F350 4x4, Diesel 3.5" - 4.0" Axle Tube

     Full Progressive Leaf Springs

Radius Arms Option Description

Adjustable Radius Arms for 2.5" - 3.5" Lifts +$
     - 1° - 4° of adjustable Caster Correction Engineered into Arms
     - 3/16" Construction, Fully Internal Gusseted with 1/2" Additional Tire Clearance
     - Limit Straps Included
     - Serviceable 17-4 Stainless Spherical  Joint at Frame Connection for longevity and bind free Cycling
     - Combines with Radius Arm Drop Brackets for 4.5" - 5.5" Carli Systems
     - Fitment: 2005+ F250/F350 4x4


High Mount Steering Stabilizer Option Description

High Mount Steering Stabilizer +$
     - Stainless Steel Construction
     - Long Lasting Performance and Appearance 
     - Bolt in Replacement for OEM Stabilizer
     - Works on leveled and lifted trucks only
     - Fitment: 2017+ F250/F350 4x4


Low Mount Steering Stabilizer Option Description

Low Mount Steering Stabilizer +$
     - Stainless Steel Construction
     - Custom Valve for Larger Tires, Adjustable Nitrogen Pressure
     - Includes Differential Guard and Clamp
     - Combines with High-Mount Stabilizer for Opposing Setup
     - Optimized for Carli 2.5" - 5.5" Systems
     - Fitment: 2005+ F250/F350 4x4



The Super Duty Backcountry 2.0 system is designed for people seeking the best ride on and off-road quality on a budget; basically, the Commuter for those that want to have a little dirt-road fun in their 8,500lb truck without losing the on-road ride quality or usability for which the truck was designed. You’re no longer limited to the highway while gravel roads become uninteresting as you can drive them at speed with one hand on the wheel. Utilizing Fox 2.0” Remote Reservoir Shocks, we’ve developed a tune that delivers all-around comfort and ride quality designed for on-road, in-town, highway, towing/hauling as well as slow to mid-speed off-road use. The Fox 2.0s boast extruded aluminum construction with a clear anodizing for corrosion resistance, are fully rebuildable, and are built with hour-glass bushings in the rod-ends. Fox builds these shocks with their legendary red shock oil that flows well down to -55° F.

The truck will sit 2.5” higher in the front and have more wheel travel thanks to the lighter rate Carli Coil Springs. The Adjustable Track Bar centers the front axle and Stainless Brake Lines firm up braking and ensures there is enough line for the newfound travel. To round off the front end, we include Sway Bar Drop Brackets to recenter the sway bar in the new extended travel stroke, Caster Shims to tighten the steering, and a fabricated, High-Clearance Bump Stop Drop to keep the springs clear from contacting the factory bump stop.

The rear can be outfitted with a replacement Full Progressive Spring Pack (reduces capacity to a “light” ¾-ton) or factory leaf-pack modifying Progressive Add-a-Pack (eliminates the factory block and maintains payload capacity; pairs with a rear bump stop drop). This is where the F250 and F350 are a bit different. Since 2008, the main spring packs on these two trucks is different; the F250 has a lighter rate spring pack than its F350 counterparts. The F250 Add-a-Pack equipped systems are a nice improvement over stock; the F350 with the Add-a-Pack is still very stiff in the rear as the main pack doesn’t move much unless loaded. We recommend the Full Replacement Leaf Spring packs for both trucks but especially the F350 given the super-stiff factory springs. If capacity is a concern, an aftermarket airbag system should be installed to compliment the Full Progressive Leaf Springs to restore the F350 capacity. We recommend a system that will allow the airbags to disconnect from the lower mount during suspension cycling to ensure you’re able to take advantage of all your rear suspension travel. The Full Progressive Leaf Spring Pack will shift the axle slightly forward in the wheel well to ensure maximum tire clearance for a 37” M/T at full compression.

Wheel and Tire:

On our 2.5” Ford Systems, we recommend 17”-18” wheels, no more than 9” wide with 5.5” of backspacing with Carli Fabricated Radius Arms or 5” Backspace with factory arms; 5” will require a bit more trimming. Tires, 37x12.5” will fit with some trimming; 35” will likely fit without trimming. 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

System Notes:

Wheels - Carli Recommends a 17"-18" Wheel, no more than 9" wide with 5"-5.5" of Backspacing on Leveling Systems

Tires - 35", E-Rated Tire Fitment is Recommended. Recommended unloaded Tire Pressure 45F/40R.

Recommended Configuration - Carli Leveling Systems are Designed and Tested on Vehicles with 17"-18" Wheels with 35", E-Rated Tires. Stock wheels and tires or running a larger wheel diameter will result in a stiffer ride.

Add-A-Packs - Add-A-Pack Option Requires NO BLOCKS to achieve level Stance

Leaf Springs - Full Replacement Leaf Spring Option Requires NO BLOCKS to achieve level Stance.


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