Originally Posted by
Dirtdrop
Are those bottle cage bosses on the bottom of the down tube, or are they for something else?
I think so. I've seen this done to add a 3rd bottle in addition to the ones on the downtube and seatube. Also, it has been done on some mountain bike frames like my Nishiki Alien ACX, which does not have room for a bottle cage on the seatube.