CS-F55-BC-CS-23 | Carli Suspension Carli Spec 2.0" IFP Front & Rear 5.5" Lift Backcountry System For Ford F-250/F-350 4WD | 2023-2023 | Diesel

Utilizing Carli SPEC 2.0″ Diameter, 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

F250/350 Lift Height: 5.5"/ TREMOR Lift Height: 3.5″ / Front Travel: 11.3″ / Rear Travel: 13.8″ / Shock Type: 2″ Remote Reservoir / Tire Fitment: 37″ x 13.5″

The remote reservoir Carli SPEC 2.0 boasts 6063 Aluminum construction, anodized body for corrosion resistance, 5/8″ hardened steel chrome plated shaft, full serviceability & rebuildability and are built with 1-peice bushings in the 6061 billet rod-ends. These shocks are spec’d with a premium 5WT oil to balance lubricity, consistent damping and the widest available range in temperature variation. We back these with a 1-year warranty, serviced by Carli. More details on these shocks can be found HERE.

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.

The truck will sit 5.5” higher in the front and have more wheel travel thanks to the taller, Progressive Rate Coil Springs. Radius Arm Drop Brackets reset the pivot point and keep the travel linear for the best ride. The front Sway Bar Geometry will need to be addressed with your choice of a Sway Bar Drop Bracket & Carli Extended Sway bar End Link combination or, for those seeking the most possible ride quality, we offer our full replacement Torsion Sway Bar that lightens the most commonly neglected spring rate – the factory sway bar. From the Torsion Sway bar upgrade, one can expect a far more compliant feel and increased articulation with only slightly more body roll. Bump Stop Drops protect the shocks from over-compressing, the Adjustable Track Bar centers the front axle and Stainless Brake Lines firm up braking and ensure there is enough line for the newfound travel. To round off the front end, we include Caster Shims to tighten the steering.

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 (2 main leaf springs) than its 350 counterpart (3 main leaf springs). 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 you own an F250 built with the Tremor or high-capacity tow package, these are equipped with an F350 rear spring and should avoid the add-a-pack, as well. If capacity is a concern, an aftermarket airbag system should be installed to complement 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: 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:

Tires and Wheels: How Do They Affect My Ride?

Our Systems are not compatible with the ONBOARD SCALES/SMART HITCH. Modifying the ride height or spring rate will interfere with this system’s performance.

Customization Information

Sway Bar

*REQUIRED*

FORD F250/350 4X4 EXTENDED SWAY BAR END LINK & SWAY BAR DROP BRACKET KIT - 4.5"/5.5"

SKU: CS-FELKIT-45-17
- Combines End Links and Drop Brackets For Perfect Sway Bar Position
- 17-4 Stainless Steel, Fully Rebuildable
- Excellent Articulation
- Compatible with 4.5" & 5.5" Suspension Systems

FORD F250/350 4X4 TORSION SWAY BAR KIT - 4.5"/5.5" LIFT WITH END LINKS

SKU: CS-FTSB-45-17
- Direct Fitment to Carli 4.5" & 5.5" Lifts
- Replaces Immobile Factory Sway Bar with Custom Torsion Bar
- Huge Ride Quality Improvement
- Includes CS-FEL-45-17 Drop Brackets and Sway Bar Links

Rear Leaf Spring Option

*REQUIRED*

The Commuter System has been optimized for use with the Full Progressive Leaf Springs. This system is also compatible with the Progressive Add-a-Packs but there will be a notable ride quality difference on and off-road. Add-a-Packs are NOT recommended for the F350 (or any F250 equipped with the High Capacity Tow or Tremor Package). More information can be found in the description at the bottom of this page. More information is available in the long description at the bottom of this product page. Selecting "NO Rear Leaf Spring Selection" will result in an unknown ride quality and height result as all Carli Systems are optimized to either the Add-a-Pack or Progressive Leaf Springs.

FORD F250/350 4X4 PROGRESSIVE ADD-A-PACK - 3" LIFT

SKU: CS-FPAP-45-17
- Built in the U.S.A. By Deaver Leaf Spring
- Smooth Progressive Design
- Supplied with 2" Block, Bump Stop Drops, U-bolts and Hardware
- Provides Slightly Rear-High Stance with 4.5" & 5.5" Lifts
- Load Capacity is Maintained, Ride Quality is Improved

FORD F250/350 4X4 FULL PROGRESSIVE LEAF SPRING KIT - 3" LIFT

SKU: CS-FFSP-17
- Block eliminating, Full Progressive Spring Pack
- "Light" 3/4-Ton Capacity, Full Capacity Attainable with Long Travel Airbags
- Includes new U-Bolts and Rear Bump Stop Drops
- Provides a 1", rear high stance on Matching 4.5"/5.5" Suspension Systems

 Leaf Spring Shackle

*OPTIONAL*

Much of the jarring ride of the Super Duty rear can be attributed to the factory vulcanized bushings in the leaf spring pack and shackle. The factory shackle is very strong BUT the design is not conducive to a smooth ride. The Carli shackle is constructed of 1/4″ American cold-rolled steel. The mid-length gusset ensures no deflection while the serviceable bushings offer a far superior ride to the bind of the factory bushings.

05-23 FORD F350/350 4X4 FABRICATED LEAF SPRING SHACKLE

SKU: CS-FSHACKLE-11
- Greasable and Rebuildable
- Far Better Ride than Factory Shackle
- 1/4" Steel Construction
- Fits Factory and Carli Springs

2° Pinion Shim

*OPTIONAL BUT RECOMMENDED*

When modifying the rear leaf springs (add-a-pack or Full Spring Pack) of the 2017+ Super Duty platform, there's a small chance you'll induce a driveline vibration around 70mph when under power from the rear driveline. These pinion shims will correct the angle to 4°-5°, ideal for our lifted applications. Although these will not be "required" on every truck, we've found the 4°-5° spec to be superior in our applications and these are FAR easier to install initially than correctively.

05-23 FORD F250/350 4X4 FORD PINION SHIM KIT, 2 DEGREE

SKU: CS-FPSKIT-3X2
- 2° Pinion Shim Kit
- Includes new Center Pin

Fabricated Radius Arm Option

*OPTIONAL*

Icing on the cake, these arms add Additional Tire Clearance, Limit Strap Protection for your Front Shocks, 1/4" Boxed Steel Constructions, Serviceable 17-4 Stainless Spherical Bearings and Adjustable Caster Correction up to 3.5° over stock specs to leave Death-Wobble in the rear-view.

23+ FORD F250/350 4X4 FABRICATED RADIUS ARMS - 5.5" LIFT

SKU: CS-FARA-55-23
- 0.5°-2.5° of adjustable Caster correction
- 3/16 Construction, Full Length Internal Structure
- 15" Limit Straps Kit Included
- 17-4 Stainless Spherical Joint for longevity and bind free Cycling
- Fitment: 2023+ Ford F250/350 4x4

Low Mount Steering Stabilizer

*OPTIONAL*

Bolt in steering stabilizer which compliments a Carli, or factory, high mount stabilizer. Adjustable from 70-200 psi to run neutral (no directional influence at 70psi) or at 200psi to counter the left-hand pull inherent to tires like Nitto Trail Grapplers. Run in conjunction with the Carli High Mount for the ultimate Dual, Opposing Steering Stabilizer combination that's infinitely adjustable.

23+ FORD F250/350 4X4 LOW MOUNT STEERING STABILIZER WITH DIFF GUARD

SKU: CS-FLMSS-23
- Inside the Carli Stainless Stabilizer
- Custom Valved for Larger Tires, Adjustable Nitrogen Pressure
- Includes Differential Guard and Clamp
- Combines with High-Mount Stabilizer for Opposing Setup
- Fitment: 2023 Ford F250/350 4x4
- Optimized for Carli 3.5"-5.5" Systems

High Mount Steering Stabilizer

*OPTIONAL*

Bolt in replacement for the factory stabilizer. Adjustable from 70-200 psi to run neutral (no directional influence at 70psi) or at 200psi to counter the right-hand pull inherent to tires like Toyo Mud Terrains.

17-23 FORD F250/350 4X4 HIGH MOUNT STEERING STABILIZER - STAINLESS STEEL - 2.5" & 4.5" LIFT

SKU: CS-FHMSS-17
- Long Lasting Performance and Appearance
- Bolt in Replacement for OEM Stabilizer
- Fitment: 2017-23 F250/350 4x4
- Works on leveled and lifted trucks ONLY

Carrier Bearing Drop

*OPTIONAL*

For trucks with 2-piece driveshafts; lowers the carrier bearing to eliminate take-off shudder resulting from additional driveshaft angle from the lifted suspension.

05-23 FORD F250/350 4X4 CARRIER BEARING DROP

SKU: CS-CARRIERDROP-F
- Drops Carrier Bearing on 2-Piece Driveshafts
- Prevents take-off shudder/driveline vibration
- Stackable 3/8" Shims for 1"-4" Rear Lift

Trophy Hitch

*OPTIONAL*

Get your over-sized spare out of your bed - crank it into the factory location and secure it with our 3-way tie-down with the Carli Trophy hitch. Boasting 16,000lbs. of capacity via the 3" hitch receiver, direct bolt in installation, and up to a 38" spare tire in the factory location!

17-23 FORD F250/350 4X4 FORD TROPHY HITCH

SKU: CS-FHITCH-1723
- Direct Bolt in, Rated to 16,000lbs., 3" Hitch Receiver
- 3/16" and 1/4" Cold-Rolled American Steel
- Utilizes Factory Winch + 3-way Tie-Down to Secure Spare
- 38" Spare Tire in the Factory Location
- May Require Exhaust Modification
- Requires 5/8" x 4" (usable shank) Hitch Pin