Floyd Mayweather -- Drops $100K On One-Of-A-Kind Jeep

Another day, another fancy whip for Floyd Mayweather ... this time the luxury gearhead is going off-road ... dropping some serious cash to upgrade an ordinary Jeep into a Money-worthy stunt mobile.

TMZ Sports spoke with Alex Vega -- the customizing guru down at The Auto Firm in Miami -- and he tells us Mayweather dipped into his deep pockets and pulled out $100k to transform his 2015 Jeep Wrangler.

We're told Floyd wanted every inch of the ride customized ... so he added a new front hood, Avorza 35 inch wheels, new bumpers, and red LED base lights to make the streets glow red when he cruises.

He wasn't done there though ... 'cause the guys at The Auto Firm went all futuristic on the Jeep adding a super slick iPad integration system which controls everything inside of the vehicle.

Hey, it might not be a $4.8 million supercar ... but it definitely has more room for strippers.