Carli 4.5"-5.5" Backcountry Kit 2017-2020 Ford F250/350 6.7L


Carli CS-F45-BC20-17

4.5" Backcountry Kit 2017-19 F250/F350 4x4 6.7L - BASE

5.5" Backcountry Kit 2020 F250/F350 4x4 6.7L - BASE


Front Lift Rear Lift Front Travel Rear Travel Shock Diameter Tire Fitment
4.5-5.5" 3-4″ 11″ 13″ 2.0 37″ x 13.5″

This “Base Kit” SKU must be accompanied by the SKU of a Sway Bar Option and Progressive Add-a-Pack option to form a complete system.

The Ford 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, Carli 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 Carli tuned 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 4.5”-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 while the Sway Bar Link & Drop Brackets Kit resets the sway bar engagement point. The Torsion Sway Bar is now also available. The End Link Kit or Torsion Sway Bar are listed as an “option”, but are necessary to run. 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 (maintains factory payload capacity and pairs with the included Carli Fabricated 2” block). 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 350 counterpart. 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, the Full Progressive Leaf Springs can be supplemented back to the factory capacity of a SRW F350 with the addition of our Long-Travel Airbags. 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. Carli 4.5”-5.5" 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.

Carli Ford 4.5"-5.5" Backcountry Kit, 2017-2020 F250/F350 4x4 Kit Includes

  • CS-FMRC-05 Carli Multi-Rate Coils
  • CS-FBC20SPKG-45-05 Carli Tuned Fox Reservoir 2.0" Front & Rear Shocks
  • CS-FORDBBL-45-17 Brake Lines
  • CS-FCASTERSHIM-4.5 1° Caster Shims
  • CS-FBDF-4.5-17 High Clearance Bump Stop Drops, Front
  • CS-FATB-17 Track Bar
  • CS-FRAD-17 Radius Arm Drops
Part Type:
Lift Kits