Results: First Kentucky Speedway Sprint Cup practice cut short by rain
After two days of persistent rain washed out testing, Sprint Cup Series drivers finally got on track at 10:30 a.m. ET Friday at Kentucky Speedway.
The practice marked the first opportunity drivers have had to shake down the new Sprint Cup aero package debuting this weekend at the 1.5-mile track.
The package, designed to create more opportunities for passing, includes a 3.5-inch rear spoiler and a 25-inch wide splitter extension panel with 1.75 inches less overhang on the splitter, which collectively reduces aerodynamic downforce.