Hey there Cadillac ATS owners! If you're dealing with annoying clunking noises, steering that feels loose, or uneven tire wear, this 4-piece control arm kit might be exactly what you need. This complete set includes both front lower forward control arms (driver and passenger sides) AND both front lower rearward control arms - everything you need for a full front suspension refresh. Made from durable aluminum, these control arms are built to last and designed as direct replacements for your original equipment. They'll fit most 2013-2018 Cadillac ATS models (RWD only, not for AWD versions) including Base, Luxury, Performance, and V-series trims. Perfect match for OE numbers 20768759, 23462009, CMS501277, and several others. Installation is straightforward if you're handy with tools, though we do recommend professional installation if you're not experienced with suspension work. Each arm comes with pre-installed ball joints and bushings, saving you time and hassle. The kit ships as a complete set so you can tackle both sides at once and get your ATS driving smooth and quiet again. These control arms have been tested to meet or exceed OEM specifications, giving you peace of mind that you're getting quality parts that will restore that factory feel to your suspension. No modifications needed - they bolt right in place of your worn-out originals. Say goodbye to that steering wander and excessive vibration you've been putting up with!