4 pot rebuild kit if you want to refurb your own:
https://www.godspeedbrakes.co.uk/imp...-seal-kit.html
If you want to replace the calipers, you can get aftermarket 4 pots which were designed as an exact replica of the original Subaru calipers - they just say 'WRX PRO' on them instead of Subaru. Godspeed sell them but can't find the link, they look like this:
https://www.subaruforesterparts.co.u...grade-calipers
But I would have thought a Godspeed refurb will be slightly less than buying new calipers.