Add true race-inspired styling to your Mustang with ROUSH's Rear Side Splitter kit. The rear splitter kit includes both the left and right sides of your Mustang. Each splitter fits underneath the rear valance to create an aggressive styling line with the road. Designed with OEM CAD data to ensure precise fitment; Includes all required hardware and instructions. The Mustang Rear Side Splitter kit is made from high-strength TPO (thermal plastic olefin) for long lasting durability. The plastic is molded with high-pressure injection, the same process used by the automotive manufactures. These splitters come unpainted and featuring a black stipple finished to be more resistant to impact from rocks while driving. Installation takes only minutes, and there is no trimming needed, as there would be with our competitors? products. All required parts are included.