The NHRA Technical Department has released additional 2025 Rule Amendments. Unless otherwise noted in this document, these additional amendments will come into effect immediately. The 2025 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.

• Section 15, Top Alcohol Funny Car - Maximum engine displacements clarified
• Section 16, Pro Stock Motorcycle – S&S Gen1/2 hybrid minimum weight clarified
• Section 16, Pro Stock Motorcycle – Suzuki GSX based combination added
• Section 16, Pro Stock Motorcycle, Electrical, Ignition – All Suzuki 4-valve combinations limited to 14,200 rpm rev limiter
• Top Fuel and Funny Car, Interior, Seat – Updates
• Top Fuel and Funny Car, Frame, Roll-Cage Padding - Updates