SKU: 74174741460

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

Sale price$4608.90 Regular price$5121.00
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Description

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

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 SPRINGS

The 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 RECOMMENDATIONS

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. 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
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 74174741460

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Christopher Burwell
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★★★★★ 5
If you’re on the fence read this
Special Size: Low Stretch, Size: 40W x 30L, Color: Iced Light Wash, Special Size: Low Stretch, Size: 40W x 30L, Color: Iced Light Wash
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Reviewed in the United States on March 12, 2026
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Jack
San Leandro, US
★★★★★ 5
These are great jeans
Special Size: Low Stretch, Size: 34W x 28L, Color: Grey Wash
These are great jeans for the price especially
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Reviewed in the United States on May 3, 2026
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Snazzy74
Bozeman, US
★★★★★ 4
Run big
Special Size: Rigid, Size: 40W x 30L, Color: Medium Blue Vintage
Bought for my husband and very loose in butt and legs and he's normally that size so maybe buy a size down
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Reviewed in the United States on April 22, 2026
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MarkFL
Los Angeles, US
★★★★★ 5
A Great Buy - But Might Be Too Long
Special Size: Low Stretch, Size: 34W x 32L, Color: Dark Midnight Wash
These jeans are an excellent buy! I have only bought Eddie Bauer jeans for the last 25 years, but this time I couldn't find my size in the correct style. I prefer classic/relaxed in dark blue. I don't like the "pre-washed" or worn look. The Dark Midnight Wash was exactly what I wanted - new jeans. The waist measurement was perfect. Unfortunately, the 32 length was waaay too long. (All the Eddie Bauers were 34x32). So I just did an exchange for a 34x30, which should be good. Eventhough the length was too long, I'm still giving 5 stars. Different manufacturers cut sizes differently. It is what it is. And the return process was EZ and the replacement size was in stock. Seriously, there is really no quality difference between these Amazon Essential jeans and my old $60 E.B.s No one sees the label anyway!
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RB_amazon_shopper
Carnegie, US
★★★★★ 3
Weird sizing, snug in some places and much more “relaxed” in others
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Comfortable and close fit around waist, buttocks, crotch - but from thigh down trouser cuff it’s a VERY relaxed fit, much bigger than I need even with thick muscular legs. Not quite clown pants or bell bottoms, but a still a strange look. I’ll probably be sending them back.
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