Probably one of the lightest TI MTB of the era?
I wonder how it rides as the main tubes don’t look to be oversized.
Very nice. Don't get why it's painted though - oh um, but it does look very nice.
Plenty of BB-UN72 ITA on Ebay. ITA cups are inter-changeable with BSA with some eeerrrr careful manipulations not involving a hammer.
My understanding is the Brazilian brand Caloi contracted a US manufacturer to build titanium frames for their USA mountain bike racing team in the mid 90s. The unused frames were sold off to US distributors. Some speculate Litespeed may have manufactured the frames for Caloi but I have found no evidence of that. However, the yellow "TITANIUM" decal is exactly like the ones found on Litespeed frames, it's under the clear coat. As for the paint, Caloi's logo was typically found inside a purple block, I'm assuming that's why the bike is purple with "Team USA" decals.
As for the ITA bottom bracket, they are easy to find even in XTR M900 version.
Unfortunately the frame is too big for me, it appeared smaller at first glance, I guess because the weight and the non-oversized tubing, and a bit of wishful thinking on my end.

I will most likely list for sale.
Frame is 135 rear spacing, for 26" wheels and cantilever brakes.
One more tidbit of information, in 1996 Caloi hired Merckx to manufacture road bikes for their Motorola Team. They requested a titanium model road bike, and at the time Litespeed was manufacturing all the titanium Merckx. So the Caloi Ti team road bike was indeed fabricated my Litespeed.