Carli Suspension Ford 17+ F250/350 (Diesel) Back Country 4.5" Suspension System - CS-F45-BC20-17

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 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.

Base Kit Includes:

• 4.5/5.5" Lift, Linear Rate Ford Leveling Coils - CS-FMRC-05


• Carli Custom Tuned Fox 2.0" Shocks, Front and Rear - CS-FBC20SPKG-45-05


• Extended Braided Brake Lines, Front - CS-FORDBBL-45-17


• 2° Caster Correction Shim - CS-FCASTERSHIM-4.5


• High-Clearance Bump Stop Drops, Front - CS-FBDF-4.5-17


• Adjustable Track Bar - CS-FATB-17


• Radius Arm Drops - CS-FRAD-17

Options:

Sway Bar (required)

The Pintop System has been optimized for use with the Torsion Sway Bar; this sway bar upgrade is a HUGE ride quality upgrade. Maintaining the factory sway bar through use of the Sway Bar Drops or Extended Link Kit is only recommended for customers with snow-plows, in-bed campers or who are constantly hauling to the capacity of the truck.

- Sway Bar End Link Kit, 4.5"/5.5" Lifts

• Combines End Links and Drop Brackets For Perfect Sway Bar Position


• 17-4 Stainless Steel, Greaseable and Fully Rebuildable


• Excellent Articulation


• Compatible with 4.5″ & 5.5″ Suspension Systems

- Torsion Sway Bar - Includes Sway Bar End Link Kit, 4.5" & 5.5" Lifts

• Direct Fitment to Carli 4.5" & 5.5" Lifts


• Replaces Immobile Factory Sway Bar with Custom Torsion Bar


• Huge Ride Quality Improvement


• Includes Drop Brackets and Sway Bar Links

Rear Leaf Spring Options (required)

-Full Progressive Leaf Packs - 4.5" & 5.5" Lifts

• 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

-Full Progressive Leaf Packs For 4.5/5.5" Systems

• 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" 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.

• Greasable and Rebuildable


• Far Better Ride than Factory Shackle


• 1/4" Steel Construction


• Fits Factory and Carli Springs

2° Pinion Shim (optional)

• 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.

Long Travel Airbags (optional)

All of the Carli Long Travel Air Bags offer the same features and capacity, select your kit by axle tube size

- Long Travel Air Bag System, 2017+ Super Duty - 3.5" Axle Tube

- Long Travel Air Bag System, 2017+ Super Duty - 4.0" Axle Tube

- Long Travel Air Bag System, 2017+ Super Duty - 4.5" Axle Tube

• Supports up to 12 inches of travel


• Compatible with Carli 4.5"-5.5" Suspension Systems ONLY


• Restore Factory Payload to Full Progressive Springs


• Adjustable Rear Loaded height, 2,000lb Capacity per bag at 100psi


• Use Manually (included) or with onboard air System (1/4" airline compatible

High Mount Steering Stabilizer (optional)

• Long Lasting Performance and Appearance


• Bolt in Replacement for OEM Stabilizer


• Works on leveled and lifted trucks ONLY

Low Mount Steering Stabilizer (optional)

• Custom Valved 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

Adjustable Radius Arms (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.

• 1°-4° of adjustable Caster correction


• 3/16 Construction, Fully Internal Gusseted with 1/2" Additional Tire Clearance


• Limit Straps Kit 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

Carrier Bearing Drop (optional)

• Drops Carrier Bearing on 2-Piece Driveshafts


• Prevents take-off shudder/driveline vibration


• Stackable 3/8" Shims for 1"-4" Rear Lift