Roush Side Splitter KitRear LH & RH Black Stipple Finish

(Excluding Injectors) For Non Continental USA or International Shipping on ECUs and some other items, Please contact us directly to get an accurate quote for your order.

PLEASE CONTACT US DIRECTLY BEFORE PLACING ANY ORDERS TO CHECK AVAILABILITY ON ITEMS! SOME ITEMS MAY BE OUT OF STOCK WITHOUT ANY INDICATION. IF AN ORDER IS PLACED WITHOUT CONTACTING US DIRECTLY AND NEEDS TO BE CANCELLED, THERE IS UP TO A 10% CANCELLATION FEE!

  • Manufacturer Part Number: 421405
  • $149.99
    Unit price per 


  • WARNING: This product may contain chemicals known to the State of California to cause cancer or birth defects. PROP65 INFO
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.

This Part Fits:

Year Make Model Submodel
2013-2014 Ford Mustang Base
2013 Ford Mustang Boss 302
2013-2014 Ford Mustang GT
2013-2014 Ford Mustang Shelby GT500