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NASCAR Boosts Horsepower, Implements Safety Changes for 2026

11/15/2025

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Summary

Story summary

NASCAR will raise horsepower to 750 on tracks 1.5 miles or shorter in 2026 Cup Series Rule Book, affecting Bristol, Darlington, Dover, Nashville, and World Wide Technology.
A-Post flaps will be mandatory at all tracks to prevent airborne launches, with bright orange fabric underneath.
Testing rules allow RAM and other new manufacturers up to three tests per original equipment manufacturer (OEM), with location and timing restrictions.

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Story summary

NASCAR will raise horsepower to 750 on tracks 1.5 miles or shorter in 2026 Cup Series Rule Book, affecting Bristol, Darlington, Dover, Nashville, and World Wide Technology.
A-Post flaps will be mandatory at all tracks to prevent airborne launches, with bright orange fabric underneath.
Testing rules allow RAM and other new manufacturers up to three tests per original equipment manufacturer (OEM), with location and timing restrictions.