We were not happy with the rear springs in the XJ, so we decided to swap them out with a better pack from BDS Suspension. The XJ-specific 41⁄2-inch lift springs are a full-pack replacement, which includes new rear shackles and U-bolts. The BDS springs are a touch on the firm side, which is actually a benefit in our case. Given we won’t have much room for up travel, nor do we have a front sway bar, the springs will work great to keep the Jeep stable and axle under control. If we do happen to deform the springs, we can always swap them out for a new set under BDS’s no-fine-print warranty. With the way we beat on stuff, the company might need to revise that policy!