6" Big UCA Lift Kit w/Falcon 1.1 shocks 2025-26 Trailboss, AT4 1500 4WD

Built for drivers who demand relentless capability, this 6-inch Big Lift Kit upgrades your 2025-2026 Trail Boss or AT4 to dominate the toughest trails without sacrificing highway refinement. ReadyLIFT engineered this system around 3/16-inch thick boxed steel cross members, a full-width skid plate, and reinforced differential drop brackets designed to withstand high-torsion off-road abuse. The heavy-duty tube steel upper control arms house maintenance-free pivot bushings and massive 1-ton ball joints, maintaining ideal suspension geometry while utilizing the factory struts. A custom lower mount pre-load spacer slightly increases spring rate to comfortably support oversized wheels and aggressive tires. Out back, fabricated 5-inch rear lift blocks with bump stop landings combine with a 1.5-inch add-a-leaf and premium Falcon 1.1 Monotube extended shocks to ensure correct pinion angles, extra clearance, and exceptional rear stability. Rigorously trail-tested to guarantee a ride that handles better than stock, part number 44-35625 delivers maximum ground clearance, bulletproof durability, and the peace of mind of the ReadyGuard Powertrain Warranty.

Falcon 1.1 Monotube Shocks offer increased stability and improved ride quality without breaking the budget. The Falcon 1.1 Monotube shocks include race-inspired performance with a  2-1/8" shock body,  6061-T6 aluminum alloy billet pistons, a 1/2" induction hardened chrome plated shaft that resists damage, corrosion and shaft buckling, and lastly, Microcellular Foam Progressive Bump Stops (Bump stop configuration varies depending on shock absorber collapsed length, tire size, and fenders).

Kit Components
Lifted steering knuckles
Strut spacers
Tubular upper control arms
Sway bar drop
Heavy duty front and rear crossmembers
Skid plate
5" rear block kit with bump stop landings
Rear add a leafs
Falcon 1.1 series rear shocks

Kit Features
3/16-inch thick plate steel front and rear cross members
Made in the USA
Yields 6" lift on top of the factory 2" lift
Fits up to 37x12.50 on 9" wide wheels with 0 offsets with no trimming
Increased ground clearance
1 ton ball joints

View installation instructions