Modern Aggressive RTR Styling. Let them see you coming by adding the same functional and aggressive styling of the 2018-2023 Mustang RTR to the front end of your 2018-2023 Mustang with a set of RTR Upper and Lower Replacement Grilles with LED Vent Lights. Designed and developed in conjunction with Vaughn Gittin Jr., these RTR Grilles are the same exact ones that are included as original equipment on the special edition 2018-2023 Mustang RTR.LED Accent Lighting. The RTR Upper Grille is available with the very popular integrated LED Accent Lighting around the vent openings for an impressive head turning appearance. The driver’s side vent also supplies fresh air to the factory air box. The LED Accent Lights simply plug directly into your Mustang's existing factory headlight harness with no cutting or splicing required. The LEDs are automatically activated in conjunction with your Day Time Running Lights, so they are always on when your Mustang is running. The LED Accent Lights are only compatible with the RTR Upper Grille, it is not designed to be used with factory or other aftermarket grilles.High Powered SMD Technology. The LED Vent Lights included with the RTR Upper Grille utilize SMD technology to produce a super bright white light while only consuming 1/10th of the power of standard incandescent bulbs. These LED accent lights are rated at 100,000 hours of continuous use.Improves Engine Cooling. These RTR Grilles not only add great aggressive styling to the front of your S550 Mustang, but they also increase air flow across the radiator when compared to the stock grilles. This additional air helps to improve engine cooling, which in turn increases performance.Increased Air flow to the Airbox. The driver’s side vent increases the amount of fresh air that reaches the factory Airbox location. More fresh cool air, more power! High Quality TPO Construction. RTR manufactures both their Upper and Lower Grilles from an injection molded thermal plastic olefin (TPO) material using the original OEM CAD data from Ford to ensure a perfect fit. TPO is an extremely strong material known for its light-weight, superior durability and impact resistance - making it perfect to withstand the hazards of daily driving. Simple Straight Forward Installation. Designed to be a direct fit replacement for the original factory grille, these RTR Grilles install reusing the stock hardware and mounting points. There is no cutting or modifications required for a clean straight forward installation. Please note that removal of the front fascia will be required for installation.Application. These RTR Grilles are designed to fit the 2018-2023 EcoBoost and GT Mustangs with the stock front fascia installed. The upper and lower Grilles are available separately or in a convenient combo kit (select from choices above).Application Note. Please note that both of these RTR Upper and Lower Grilles are 100% compatible with Ford's Safe and Smart Package, as well as Adaptive Cruise Control (ACC).