If you want to lift your Full Size Jeep without ending up with an outdated spring design or a harsh ride, this Rusty’s 4-inch lift kit is a serious upgrade. While some suspension kits still rely on older FSJ spring designs that have been around for decades, Rusty’s built this system using newer spring design improvements to deliver a better mix of ride quality, articulation, load support, and durability.

The 4" lift front springs are constructed with 4 leafs that feature tapered leafs ends and anti-friction pads for a smooth ride. The leafs are shot-peened to further reduce stress and increase spring life. Only the best in rubber bushings are used, and the Rusty's front springs have a 310 lbs. spring rate. There is not a better spring pack built today.

The rear springs are a 6 leaf design with tapered leafs ends and anti-friction pads that reduce inter-leaf friction. Like the fronts, they are also shot-peened to reduce stress and increase spring life. Each spring is load-tested to ensure they meet the required specifications. The Rusty's rear springs have a 400 lbs. spring rate. Spring eye bushings and Grade 8 U-bolts round out the rear details.

To finish up kit, a complete set of Rusty's Hydro shocks are included. These shocks provide excellent on- and off-road performance along with the proper length to work with this complete system. You can also upgrade these shocks to Rusty's Ultimate Hydro Shocks or Monotube Performance shocks.

The saying "Often Copied, Never Duplicated" certainly applies to Rusty's FSJ kits. 3-D computer modeling and extensive development and testing were all used to create a suspension that was second to none. This suspension offers a great on road ride, extra load capacity, and great articulation. Make sure you don't accept anything less than Rusty's!

Tires: This kit will accommodate up to 32" tires for 1976-1983 Wagoneer, 1984-1991 Grand Wagoneer, and up to 33" tire for 1976-1983 Cherokee and 1976-1988 J-Series Trucks.

KEY FEATURES:

• Best Quality Parts Built
• Great Ride & Articulation
• Complete Kit
• Limited Lifetime Warranty
• Made in the USA!

Fits:

• 1976-1983 Wagoneer
• 1976-1983 Cherokee
• 1984-1986 Grand Wagoneer
• 1976-1986 J10
• 1976-1986 J20 Note: This kit will convert the J20 to a 1/2-ton capacity.
• Will NOT fit 74-75 models that have a 1 in. bolt in the front of the rear spring eye

KIT INCLUDES:

• 3.5-4" Front Leaf Springs
• 3.5"-4" Rear Springs
• Front and Rear Grade 8 U-Bolts
• Extended Front Sway Bar Links
• Your Choice of Rusty's Performance Shocks (see details below)
• Complete Instructions

Shocks:

RX-1 Performance Shock: Excellent ride characteristics on the street but are also valved for optimum off-road performance.

RX-5 Ultimate Hydro Shock: For Serious off-roaders who want to push their FSJ to the limits

R-8 Monotube Performance Shock: For those who want something better than a traditional hydraulic shock absorber, but don't need the extra fluid capacity and cost of a true remote reservoir. R-8 Series delivers the high performance of a high-pressure monotube gas shock in an affordable package.