Fits 99-04 Roush Mustang Bumpers. Get ready to take your racing game to the next level with the Flat Bottom Race Splitter! Our updated design features a full flat bottom and CNC machined pockets that reduce weight by 6lbs, all while boosting aerodynamic performance. Plus, an optional extension panel lets you extend the splitter to fit most K-members! The Race splitter has a 4.75” lip to fall within most racing sanctions and the trim strip lowers the blade to be horizontal and can be angled down slightly with support rods. Crafted from high quality ¼” Aluminum Composite Material (ACM), it's durable and designed to give you the ultimate edge on the track. Upgrade your ride today with our Flat Bottom Race Splitter! Available with optional Splitter Extension.