If the calipers have 22mm (white ceramic) pistons then yes.
if the pistons are aluminium edge, black center / 21mm then also yes but you now get more less mechanical advantage and levers move less for same brake action and probably feel too hard (but could work, never heard of anyone trying it).
Hmm ok, I'll dig them out and have a look. It might be a daft idea but I'd rather use something I've already got if I can. I'm trying to remember when I bought them, I think they're the first generation SLX so got to be over five years.
If the calipers have 22mm (white ceramic) pistons then yes.
if the pistons are aluminium edge, black center / 21mm then also yes but you now get
moreless mechanical advantage and levers move less for same brake action and probably feel too hard (but could work, never heard of anyone trying it).