Carli Suspension CS-F45-UC30-08 Unchained 3.0 Bypass System 4.5" Lift Kit

The Carli Suspension Unchained 3.0 Bypass System represents the pinnacle of bolt-on suspension performance for 2008-2010 Ford F-250 and F-350 Super Duty trucks. This is a purpose-built system designed for enthusiasts seeking extreme off-road capability that exceeds the chassis limits while maintaining exceptional on-road ride quality. With this level of performance, Carli recommends a roll cage and axle truss to fully exploit the system's capabilities.

Carli-Tuned King 3.0" Bypass Shocks:

At the heart of this system are custom-tuned King 3.0" bypass shocks featuring 2-tube front and 4-tube rear configurations with stainless steel shafts. The 3.0" shock piston surface area is 45% larger than a 2.5" King and 126% larger than factory 2.0" shocks, providing dramatically improved damping efficiency. Bypass technology uses external tubes with fully adjustable one-way check valves that allow precise tuning of fluid bypass around the piston during compression and rebound strokes, delivering a supple ride at cruising speed while providing exceptional control during aggressive off-road use.

Performance Specifications:

• Front lift: 4.5 inches
• Rear lift: 0-3.5 inches (with optional leaf springs)
• Front wheel travel: 10.5 inches
• Rear wheel travel: 13 inches
• Accommodates up to 37x12.50 tires
• Shock diameter: 3.0 inches

Base Kit Includes:

• Multi-rate progressive coil springs for optimal load support and comfort
• Fabricated coil buckets with custom mounts for oversized 3.0" shocks
• Fabricated rear shock mounts engineered for increased strength
• Radius arm drop brackets to maintain proper suspension geometry
• Adjustable track bar for precise axle centering
• Stainless steel brake lines with extended length for increased travel
• Bump stop drops to protect shocks from over-compression
• 1-degree caster correction shims for improved steering response

Important Installation Notes:

This base kit requires the addition of a rear leaf spring option and sway bar end link option to complete the system. Full progressive leaf spring packs and extended sway bar end links are available separately. The shocks are preset with wide-open rebound and neutral compression settings, with recommended tuning specifications provided. Users can adjust bypass tubes for more float and comfort or engage more valving for enhanced control and off-road performance.

Designed and manufactured in the USA by Carli Suspension with precision fabrication, custom shock tuning, and quality materials throughout. This system delivers unmatched off-road capability while maintaining the refined on-road ride quality Carli is known for.