After a review of CSM at ProSolos, it has been determined that an adjustment in the CSM ProSolo Index was necessary. Effective 04/06/2024, and applied to the Frederick ProSolo, the new CSM PSI will be .805. The 2024 ProSolo...Read more

Registration for both the Brunswick ProSolo AND the Oklahoma National Tour opens to all drivers this Wednesday, April 24th at 3pm Central! Both events are on concrete, so pick your favorite autocross flavor and send it June...Read more

Please see below for the most recent updates for both Club Spec Mustang (CSM) and Club Spec MX-5 (CSX) (changes indicated in red). All changes have also been incorporated into the rulesets online here. Club Spec Mustang...Read more

Registration for the Lincoln ProSolo (May 23-25) and Lincoln National Tour (May 25-27) opens to all drivers this Wednesday, April 10th at 3pm Central! Come on out, hang out with your friends for the long weekend, and scratch...Read more

Hawk Performance contingency information for the 2024 National Solo season has now been updated. If you have competed in previous 2024 events and qualify for the Hawk Performance program, contingency submission is now open....Read more