4 piston calipers question

give a real good look to the pistons and bores for corrosion and galling. these are prone to sticking so making sure that they are top notch will ensure smooth operation. if the bores are too wasted it's possible to have them machined and bushed.

there are some parts available for rebuilds, the seals are common. but the transfer tubes are NLA and difficult to find, so be careful with those. the same goes for pistons. good used ones are around though.

know that the availability and quality of rotors can be spotty from time to time.

it's a good system when in great shape and working order.