Quick view Roush ROUSH 2010-2014 Ford Mustang Unpainted Side Splitter Kit - 420092 Compare $274.99 Add true race-inspired styling to your Mustang with ROUSH's Side Splitter kit. This kit includes splitters for both the left and right sides of your vehicle. Each splitter fits underneath the stock rocker panels to create an aggressive styling line with... Add to Cart Add to Cart