The NHRA Technical Department has released additional 2026 Rule Amendments. Unless otherwise noted in this document, these additional amendments will come into effect immediately. The 2026 NHRA Rulebook Amendments can be found on NHRARacer.com under Tech, then Rules.

These amendments include the following changes…See the latest 2026 Rulebook Amendments document for complete details.

·       Pro Mod, Section 6 – Parity adjustments

o   Centrifugal supercharged entries (526 cid) - 2,725 2,750 pounds

·       Factory Stock Showdown, Section 11B, Parity adjustments

o   2026 Charger Drag Pak 354,

§  Upper supercharger pulley size: (3.750) (3.625) inches

§  Overdrive ratio 2.134 2.207

·       Top Alcohol Funny Car , Section 15, Parity adjustments

o   Injected nitromethane cars, max nitro,  90.5% 91.0% for cars running 3.19 and numerically lower rear gear ratio

·       Pro Stock Motorcycle, Section 16, Parity adjustments

o   (up to 113 cid, 4-valve V&H head) –660 655 pounds

o   (up to 113 cid, 4-valve Monster head) – 625 615 pounds