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Carli 4.5" Unchained 05-16 Ford F250/350 6.7L, Base Kit

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CS-F45-UC30
*Possible Shipping Delays up to 8 weeks*
$9,045.00 - $9,100.00

Carli 4.5" Unchained 2005-16 Ford F250/350 6.7L, Base Kit

CS-F45-UC30-05: 2005-07 F250/F350 6.7L

CS-F45-UC30-08: 2008-10 F250/F350 6.7L

CS-F45-UC30-11: 2011-16 F250/F350 6.7L

 

Front Lift Rear Lift Front Travel Rear Travel Shock Diameter Tire Fitment
4.5″ 0-3.5″ 10.5″ 13″ 3.0 37″ x 13.5″

 

A “Base Kit” SKU must be accompanied by the SKU of a Sway Bar and Leaf Spring option to form a complete system. The Add-a-Packs are made to run with a 4" F350 rear block. If you have an F250, you will need to add the 4" block kit as well. 

 

Maximum travel, super soft on-road ride, and insane off-road capability combine to make this the best setup in the Carli Ford 4.5″ height range. The Carli Unchained 4.5" system optional full leaf springs and Fabricated Radius arms are highly recommended.

If you’re looking for the best on road ride Carli offers, with a huge boost in off-road capability, grab a Carli Dominator kit. If you’re after a suspension that will allow more off-road performance than the chassis to which it’s bolted, the Carli 4.5" Unchanied kit is your huckleberry. With the Unchained Suspension System, a roll cage and axle truss is recommended if you plan on using this kit to its fullest potential. This system is far more capable off-road than even the Coilover-Bypass System.

For those unfamiliar, a bypass shock has external tubes with one-way check valves that are fully adjustable to allow users to tailor the amount of fluid that bypasses the piston/valving on either the compression or rebound stroke within the effective range of the bypass tube. Typically, there will be a tube surrounding the compression zone at ride height that will allow fluid to freely move around the piston giving a supple ride. Once a large hit is encountered, the piston will move upward closing off the port, thereby forcing all fluid through the valving which substantially increases the shock’s resistance in this secondary zone. This acts as an internal bump-stop of sorts and gives tunable progression to the shock making it the perfect dual purpose setup.

Conversely, on the rebound side, we normally spec tubes that are oversized and deep in the travel stroke to allow a high volume of oil to bypass ensuring the shock shaft comes out quick enough to maintain contact with the ground (doesn’t get hung-up in the bump-zone after a large hit). As the shock extends and closes off the rebound tube, all the valving on the rebound side engages to slow the shaft as it reaches maximum extension, top-out. Simply put, the larger the shock diameter, the more capable the setup; the more tubes and “zones”, the more adjustability; the larger the tubes, the more fluid can flow around the piston and the more valving you can run to increase the stopping power in the “bump-stop” or “top-out” zone.

The truck will sit 4.5” higher in the front and have more wheel travel thanks to the taller, Progressive Rate Coil Springs that mount into the Fabricated Carli Spring Buckets. Radius Arm Drop Brackets reset the pivot point and keep the travel linear for the best ride while Sway Bar Links or Drop Brackets reset the sway bar engagement point. The included Bump Stop Drops protect the shocks from over-compressing while 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.

This system boasts Carli Signature tuned, King 3.0” 2-Tube Front and 4-Tube Rear Piggy-Back Bypass Shocks so large, we needed to fabricate custom mounts to fit them; as the old adage goes, there’s no replacement for displacement. The 3.0” shock has a piston surface area 45% greater than a 2.5” King and 126% larger than a factory 2.0” shock making it far more efficient in all situations. Additionally, as explained above, we’ve added bypass tubes to this pinnacle off-road system. The massive surface area and bypass tubes ensure we can achieve unmatched off-road performance while offering a civil & controlled on-road ride. To fit these shocks, we provide fabricated mounts that lift the upper mounting point and position the shock away from the frame while the standard bump stop extensions were shortened to allow for more up-travel to compliment the additional down-travel from the longer shock. In an effort to provide customers with the best product, we designed a custom piston to determine proper base flow rates to ensure the shock works well in the heavy duty truck platform; we then tuned the shocks based on seat-of-the-pants feel. We round off ALL our King shocks with shafts machined and polished from a solid piece of 17-4 Stainless. Unlike King’s standard shafts, there is no coating to wear off, weather is far less likely to hurt them and if there is a small chip, you can round the edges with emery cloth to ensure the seal housing isn’t damaged as they’re not brittle like the stock, hardened shafts. The shocks are finished with King oil good to -55° F. Note that all King shocks are built with a plated steel body. If subjected to inclement weather for extended periods, we recommend wrapping your shocks in 3M to provide a moisture barrier that’s replaceable.

Aesthetically, there will be one huge bypass shock at each corner. The purpose for which the truck’s being built should be a huge consideration when purchasing the Unchained. On Road, it’s great; Off-Road, extreme caution should be taken as this system is far more capable than the truck. Being bypass equipped, customers can expect to hear clicking from the opening and closing of the check valves in the external tubes of the shocks. On the bright side, the suspension is tuned by Carli but fully adjustable to the customer’s preference. Customers can turn tubes for more float and ride comfort or engage more valving for better control and off-road performance. From Carli, these shocks are setup with a wide open rebound and neutral compression; we also provide a recommended tuning spec.

As with the Coilover Bypass, it’s recommended that users purchase a Differential Guard for axle protection, High Mount Steering Stabilizer to keep the steering as controlled as the suspension and Fabricated Radius Arms for strength and Limit Strap mounting. Again, at this level of suspension, a roll cage and axle truss is also recommended if the system will be used to its full off-road potential.

If ordering this kit with an Add-a-Pack, Super Duties equipped with a 2″ tall blocks (F250's) from the factory will require either the factory F350 Block or choose the block option we have above (4" ReadyLift Block Kit) to achieve a leveled stance with the Add-a-Pack. Full rear springs do not use a block.

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” Bypass equipped Ford Systems, we recommend 17”-18” wheels, no more than 9” wide with 4.5”-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. 

 

CS-F45-UC30-05 | Ford Unchained 4.5" System, 2005-07 F250/F350 BASE Kit Includes

  • CS-FMRC-05 Multi-Rate Coils
  • CS-FUC30SPKG-45-05 Carli Custom Tuned KING 3.0 2-Tube Front and 4-Tube Rear Bypass Shocks with Stainless Shafts
  • CS-FFCB-05 Fabricated Coil Buckets
  • CS-FRSM-05 Fabricated Rear Shock Mounts
  • CS-FBLT-05 Brake Line Tabs
  • CS-FORDBBL-05 Brake Lines
  • CS-FRAD-05 Radius Arm Drops
  • CS-FBDF-05-4.5-SHORT Bump Stop Drops
  • CS-FCASTERSHIM-4.5 1° Caster Shims
  • CS-FPRB-05 Track Bar

CS-F45-UC30-08 | Ford Unchained 4.5" system, 2008-10 F250/F350 BASE Kit Includes

  • CS-FMRC-05 Multi-Rate Coils
  • CS-FUC30SPKG-45-05 Carli Custom Tuned KING 3.0 2-Tube Front and 4-Tube Rear Bypass Shocks with Stainless Shafts
  • CS-FFCB-08 Fabricated Coil Buckets
  • CS-FRSM-08 Fabricated Rear Shock Mounts
  • CS-FORDBBL-08 Brake Lines
  • CS-FRAD-05 Radius Arm Drops
  • CS-FBDF-05-4.5-SHORT Bump Stop Drops
  • CS-FCASTERSHIM-4.5 1° Caster Shims
  • CS-FPRB-05 Track Bar

CS-F45-UC30-11 | Ford Unchained 4.5" System, 2011-16 F250/F350 BASE Kit Includes

  • CS-FMRC-05 Multi-Rate Coils
  • CS-FUC30SPKG-45-05 Carli Custom Tuned KING 3.0 2-Tube Front and 4-Tube Rear Bypass Shocks with Stainless Shafts
  • CS-FFCB-08 Fabricated Coil Buckets
  • CS-FRSM-08 Fabricated Rear Shock Mounts
  • CS-FORDBBL-11 Brake Lines
  • CS-FRAD-05 Radius Arm Drops
  • CS-FBDF-05-4.5-SHORT Bump Stop Drops
  • CS-FCASTERSHIM-4.5 1° Caster Shims
  • CS-FPRB-05 Track Bar
Part Type:
Lift Kits