Aroldis Chapman now has an insane ride to go with baseball's best fastball -- the MLB star just copped a ludicrous custom 6-wheeled Jeep ... that's covered in Kevlar coating!!!
TMZ Sports has learned the New York Yankees closer hit up South Florida Jeeps in Ft. Lauderdale about two months ago to get the custom whip made -- and it came out SICK!!!
Check out the pic of the ridiculous car ... we're told by shop honcho Joseph Ghattas it started out as a cut-in-half Jeep -- and it was all custom built by hand from there.