Welcome to the IHRA Rules Page Here you can view the IHRA Rulebooks, and check out all of the latest competition updates and revisions. Pro Top Fuel Funny Car Pro Modified Pro Nitrous Pro Stock (500 Inch) Mountain Motor Pro Stock Top Alcohol Dragster Top Alcohol Funny Car Pro-Am Top Dragster Top Sportsman Factory Stock Quick Rod Super Rod Hot Rod Super Stock Super Stock Indexes Stock Eliminator Stock Eliminator Indexes (General) E.T. Bracket - Jr. Dragster - Teen Rulebook Revisions & Updates Current Pro/Pro-Am: Rev.06/11/2025 IHRA Rulebook Revisions and Clarifications 06/12/2025 Super Rod Added left hand steer roadsters to reserved for. Top Fuel Deletion of "dry sump oiling" from engine block specs. 05/15/2024 Page 29 Revision: MASTER: Age 12 to 17; Rack & pinion steering and steel brake lines are mandatory. ET 7.90 or slower