The 2.5" TeraFlex budget boost is the most economical lift for the JK Wrangler. The budget boost is designed for JK owners who wish to lift their vehicle without many modifications. The budget boost will increase off-road performance. Several innovative features of the TeraFlex budget boost are found in their exclusive spring retention spacers that do not allow the spring to drop out during extreme articulation. Additionally the kit works with your standard length shocks.