The rear of the vehicle is lifted via new rear 4-inch spacer blocks. The kit comes with the blocks, U-bolts, brake-line extension bracket, bumpstops and Bilstein shocks to round out the rear components. To conclude the install, bolt on the wheels and tires and lower the vehicle to the ground so the lower control arm to the front and rear crossmember pivot nuts can be tightened. With the weight of the vehicle on the suspension, you can now install the front antiroll-bar extensions. The final step is to have the vehicle aligned.