Yes, what Tunce said. We bought for our '12 X23B. I called them, told them the model and year and they were in the mail. I used a sharpie to write front/back on the 4 corners to make sure I got the one I needed when setting up.
2013 F-350 CC SB 2WD 6.7PS
2013 Eagle Premier 351 RLTS
-SOLD- 2012 X23B
-SOLD- 2003 Ford Expedition 5.4, Bilstein shocks