Floyd Mayweather is about to add another insanely expensive whip to his collection -- 'cause the boxer just ordered a $2.5 MILLION supercar ... TMZ Sports has learned.
It's called the KODE57 Kenji ... and high-end car enthusiasts have been geeked up about its debut for a long time.
We're told the very first one was put out on display to the public moments ago at an exclusive car show in Pebble Beach ... and Floyd has already placed his order.
We spoke with Floyd's car guy, Obi Okeke from DoctorBugatti.com and Liquidtorque.