The Backcountry 2.0 Suspension System from Carli is about leveling your truck the RIGHT way. It's designed for people seeking light to medium off-roading while still maintaining good on-road driving. Utilizing Carli SPEC 2.0″ diameter shocks tuned for slow to mid speed off-road use as well as all-around comfort and ride quality while driving in town, on the highway, towing, or hauling. Carli SPEC 2.0 boasts an aluminum body, hardened steel shaft, and full rebuildability. The shocks contain premium 5WT oil to balance lubricity, consistent damping and the widest available range in temperature variation. Your truck will sit 2.5” higher in the front and have more wheel travel thanks to the taller, lighter rate coil springs. To accommodate the additional travel, the kit contains improved brake lines, an adjustable track bar, and caster adjusters to improve on the stock handling. REAR LEAF SPRING OPTIONS This system is designed to be paired with a rear leaf spring upgrade to achieve the proper stance. Add-a-Pack Replaces the stiff overload leaf with a pack of 6 progressive leafs for a smoother ride Maintains original load carrying capacity Rear will be even with the front or just slightly lower when paired with the 2.5″ front suspension system Full Progressive Leaf Spring Kit Replaces stock 5 leaf design with a 12 leaf progressive design for a smoother ride Only a slight reduction from a standard 3/4-ton load capacity Rear will be 0.5" higher than front when paired with the 2.5″ front suspension system HD Full Progressive Leaf Spring Kit For the customer that constantly has a +1,000lb load in their bed Rear will be 1.0" higher than front when paired with the 2.5″ front suspension system With an empty bed, these will lift the rear more than stated and ride very rigid OPTIONAL UPGRADES: Upgraded Radius Arms Heavy duty design replaces flimsy stock arms Stainless steel spherical joint for longevity and bind free cycling Adjustable caster correction from 0.5° to 2.5° Adds 1/2″ of tire clearance to allow 37″ tires when running near-stock backspacing of 5.5″ Low Mount Steering Stabilizer with Diff Guard 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 Leaf Spring Shackle Replaces factory shackle that is strong but doesn't give a smooth ride The mid-length gusset ensures no deflection while the serviceable bushings offer a far superior ride to the bind of the factory bushings.