Carli 4.5" Unchained 3.0 Bypass Suspension System 05-07 Ford 6.0L Powerstroke

The Carli 4.5" Unchained Bypass Suspension System has the most performance out of any bolt-on Ford suspension system you can get! The Unchained is a purpose-built kit. 3.0" 2-Tube Front Kings and 4-Tube Bypass rear 3.0" shocks are paired with fabricated coil buckets, 4.5" lift multi-rate coil springs, and Full Leafs in the rear for unsurpassed off-road capability from a bolt-on suspension system. A roll cage should be considered at this level of suspension. If you're after a suspension that will allow more off-road performance than the chassis to which it's bolted, this is your huckleberry. With the Unchained Suspension System, we recommend a roll cage and axle truss. This system is far more capable off-road than even the Coilover-Bypass System. Carli normally specs 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 quickly 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 End Links 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, you'll also receive Caster Shims to tighten the steering. CARLI TUNED KING 3.0" SHOCKS This system boasts Carli Signature tuned, King 3.0" 2-Tube Front and 4-Tube Rear Piggy-Back Bypass Shocks so large, Carli 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, they've added bypass tubes to this pinnacle off-road system. The massive surface area and bypass tubes ensure you'll achieve unmatched off-road performance while receiving a civil controlled on-road ride. To fit these shocks, included are 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 you with the best product, Carli designed a custom piston to determine proper base flow rates to ensure the shock works well in the heavy duty truck platform; the shocks were then tuned based on seat-of-the-pants feel. ALL of Carli's King shocks are rounded off 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 replaceable moisture barrier.OPTIONAL FULL PROGRESSIVE REAR LEAF SPRINGSThe rear is outfitted with a Full Progressive Spring Pack requiring no block to achieve proper ride height; thus, travel is extended and wheel hop/axle wrap minimized at the cost of 15% less load capacity than a stock F-250. If capacity is a concern, upgrade with Long Travel Airbags to restore the payload capacity to that of an SRW F-350. FULL PROGRESSIVE REAR LEAF SPRINGS SPECIFICATIONS: Carli has made the rear leaf springs optional for those already running Carli's Progressive Full Springs Block eliminating, Full Progressive Springs Pack Includes new U-Bolts and Rear Bump Stop Drops Provides a 1/2" rear high stance on 4.5" systems 37" tire fitment Full Replacement Leaf Spring Option Requires NO BLOCKS to achieve level Stance. OPTIONAL SWAY BAR END LINKS: Corrects Sway Bar Geometry on 4.5" Lift Direct Bolt-In Unhindered Articulation, 100% REbuildable 17-4Stainless Steel Construction 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, you 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 your preference. You 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. CARLI SUSPENSION RECOMMENDATIONSAs 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. On the 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. IMPORTANT NOTES: NO LEAF SPRING OPTION NOTES:Diesel Power Products and Carli strongly suggest the use of either options available. These options are designed to work flawlessly with the rest of your kit and, are the best way to go. However, we understand you may already have the necessary provisions and/or products to use with this kit so we give you the option to not include any leaf spring provisions. NO SWAY BAR OPTION NOTES:Diesel Power Products and Carli strongly suggest the use of either options available. These options are designed to work flawlessly with the rest of your kit and, are the best way to go. However, we understand you may already have the necessary provisions and/or products to use with this kit so we give you the option to not include any sway bar drop or Torsion Sway Bar provisions. OPTIONAL UPGRADES: LEAF SPRING SHACKLE Factory rear shackles are strong but can make the ride stiff and bouncy. Carli’s shackles are made from thick steel and have serviceable bushings that let the rear suspension move smoothly, reduce axle wrap and wheel hop. Made from strong 1/4" steel, greasable and rebuildable for long life, provides a far better ride than the factory shackle, and fits both factory and Carli springs   LONG TRAVEL AIRBAGS Long Travel Airbags let you carry heavy loads or tow without losing the smooth ride. They support the rear suspension, reduce sag under weight, and keep the ride comfortable while maintaining proper suspension travel for off-road or daily driving.   CARRIER BEARING DROP The Carrier Bearing Drop lowers the driveshaft carrier to prevent vibration and keep your rear suspension running smoothly on lifted trucks. Carrier Bearing Drop lowers the carrier on 2-piece driveshafts to prevent take-off shudder and driveline vibration, and includes stackable 3/8" shims to accommodate 1"-4" of rear lift. LOW MOUNT STEERING STABILIZER Minimize steering wheel feedback and maximize control Adjustable nitrogen pressure and custom tuned valves for larger tires Includes differential guard and clamp Optimized for Carli 2.5″ systems