Not even close, not the same part number, totally different. The spindles on the expert are NOT the same as the backcountry XRS and No we were not going to use the Backcountry XRS Spindles and Rubbers on the Expert.I've read numerous times that the 19 backcountry spindle is what they used on the expert.. Only time will tell, I pick up my bcx on the 21st, I'll take some pics and post them up then.
I checked and the ski rubber part number is the same as well. Has me a little excited. haha.. don't ruin it for me! jk.