Until a couple of days ago, I had in my possession an NOS XA with a 100mm extension. I purchased it from a shop in New Jersey called "The Bike Stand". I was hoping that it was a 26.0 (as listed) and bought it to pair with a set of bars that I have. When it arrived, I discovered it was in fact a 26.4 and I didn't have use for it. I returned it to The Bike Stand, where I assume it will again become available. The price was $30, as it is missing the bar clamp bolt, rubber wedge and "winged C" black plastic front cap. Can't hurt to drop them a line and see if it'll be for sale again.