Originally Posted by
mechanicmatt
I think you have it right as a '89 Mongoose IBOC. I think Tomac was involved with the geometry (as he did with Raleigh and Yeti too). I'm not sure, but could be wrong, about your second statement. Yeti's had similar geometry and frame styles on FRO's and ARC's as Mongoose, they liked loop tales, but I thought that they made their own frames. They were obsessed with lightness.
https://www.yeticycles.com/tribe/archive
This is it only different cable routing but is a iboc frame.
There's talk of it on mtbr forums but still unclear if they sold them like that or just a team race bike because at the time there alloy frames were breaking and using the iboc frames as a stopgap measure.