NASCAR just put a stop to Brandon Brown's anti-Joe Biden car sponsorship ... rejecting the driver's deal with the "Let's Go Brandon" crypto company.
The racing org. has yet to confirm the decision ... but Brown's Brandonbilt Motorsports team was highly upset with the call, releasing a lengthy statement on Wednesday.
"NASCAR did not speak with Brandonbilt Motorsports prior to making their decision to rescind the approval and multiple attempts to set-up a conversation to address this matter went unacknowledged," the team said .