NASCAR sued 23XI Racing and Front Row Motorsports, saying in court documents that the two companies want to eliminate the charter system.

NASCAR's revenue-sharing charter system is under threat of being disbanded according to a Wednesday counterclaim filed by the stock car series against Michael Jordan-owned 23XI Racing and Front Row Motorsports that singles out Jordan's longtime business manager.

XI and Front Row Motorsports were the only two teams out of 15 that refused to sign new charter agreements, which were presented to the teams last September in a take-it-or-leave-it offer a mere 48 hours before the start of NASCAR's playoffs.