SuperPro's fitter friendly complete front lower control arms offer not only a significant performance and durability upgrade - they also offer an easy DIY or professional install. No pressing in new bushings - these arms arrive fully assembled with pre-installed bushings - in the case of the ALOY0023K - the bushings are not our traditional SuperPro polyurethane but are premium rubber. We've worked hard to make these a huge bang-for-the-buck upgrade with fully upgraded and outfitted arms offering a front end refresh for your ride!