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 amendments document for complete details.

• Race Procedures, Section 2, Weighing of Vehicle/Fuel Check – Updated
• Pro Mod, Section 6 – Parity updates
• Pro Mod, Section 6, Supercharger - Max roots supercharger overdrive changed from 18.6 to 20.8
• Factory Stock Showdown, Section 11B, Parity updates
• Factory Stock Showdown, Section 11B, Supercharger – Supercharger case may be ported
• Comp, Econo Altered, Protective Equipment – Updated
• General Regulations, Electrical/Control, Master Cutoff - Updated