M.Car;92660 wroteSorry all! Typo! Its an electrical park break!!
The rear electric park brake system just actuates the main rear disc caliper and thus the rear disc pads
There are no seperate pads or shoes as can generaly be found on other cars
The rear pads have a volvo part number of 30671574
The genuine pads are surprisingly one of the cheapest options for this specific application in most cases and include all the sliders and bolts you will want to replace at the same time
Link
https://www.fcpeuro.com/products/volvo-disc-brake-pad-s80-xc70-xc60-xc90-30671574