The 2022 Technical Change Notice lists any changes, corrections or updates to the current 2022 Tech Manuals listed below.

Any rule updates in the TCN will supersede the posted 2022 Tech Manuals.

Here you can find important documents regarding rules, engine specifications and policies. For questions and additional information please contact Butch Lamb, USAC.25 Midget Series Director, at butch@usacnation.com