NASCAR will debut a revised superspeedway package for the 2026 Cup Series regular-season finale at Daytona International Speedway, featuring a 4‑inch rear spoiler, wide splitter stuffers, and a reduced engine tapered spacer producing approximately 465 horsepower. The package includes new spoiler braces and a redesigned spoiler deflection device, with safety equipment unchanged. The new rules are expected to increase single-car speeds by 2‑3 mph while maintaining pack speeds, and improve passing opportunities with a 5‑mph closing run.
Jul 27, 2026