A "sport grille" refers to a special type of grille on a car that is designed to look more sporty or aggressive. It is typically characterized by a unique design with larger openings or a mesh pattern. Full definition
The kit in itself includes a number of added components, including a front and side under body, rear under body spoilers, a new sports grille, and a wing spoiler. (topspeed.com)
It added a rear spoiler, front fog lamps, sports grille on the exterior. (en.wikipedia.org)
The exterior features a new exposed dual exhaust design, a spoiler, unique 18 - inch wheels, Black sport grille and bowtie emblems, RS badging and an array of new color options. (chevrolet.com)